From af1ae78abb324def77ba0c6c3a7c7678fb5cebbe Mon Sep 17 00:00:00 2001 From: Al Stone Date: Fri, 17 Jan 2014 11:51:30 -0700 Subject: ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY ACPI hardware reduced mode exists to allow newer platforms to use a simpler form of ACPI that does not require supporting legacy versions of the specification and their associated hardware. This mode was introduced in the ACPI 5.0 specification. The ACPI hardware reduced mode is supposed to be used on systems having the HW_REDUCED_ACPI flag set in the FADT. ACPICA checks that flag to determine whether or not it should work in the HW reduced mode and there are pieces of code in it that will never be used in that case. Since some architecutres will always use the ACPI HW reduced mode, it doesn't make sense for them to ever compile support for anything else. Thus, they should set the flag ACPI_REDUCED_HARDWARE to TRUE in the ACPICA source. To enable them to do that, introduce a new kernel configuration option, CONFIG_ACPI_REDUCED_HARDWARE_ONLY, that will cause the ACPICA's ACPI_REDUCED_HARDWARE flag to be TRUE when set. Introducing this configuration item is based on suggestions from Lv Zheng saying that this does not belong in ACPICA, but rather to the Linux kernel itself. References: http://www.spinics.net/lists/linux-acpi/msg46369.html Signed-off-by: Hanjun Guo Signed-off-by: Al Stone [rjw: Subject and changelog] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Kconfig | 13 +++++++++++++ include/acpi/platform/aclinux.h | 6 ++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 4770de5707b9..9fd6a7a124c0 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -343,6 +343,19 @@ config ACPI_BGRT data from the firmware boot splash. It will appear under /sys/firmware/acpi/bgrt/ . +config ACPI_REDUCED_HARDWARE_ONLY + bool "Hardware-reduced ACPI support only" if EXPERT + def_bool n + depends on ACPI + help + This config item changes the way the ACPI code is built. When this + option is selected, the kernel will use a specialized version of + ACPICA that ONLY supports the ACPI "reduced hardware" mode. The + resulting kernel will be smaller but it will also be restricted to + running in ACPI reduced hardware mode ONLY. + + If you are unsure what to do, do not enable this option. + source "drivers/acpi/apei/Kconfig" config ACPI_EXTLOG diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 008aa287c7a9..30c9a7c1af88 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -52,6 +52,12 @@ #ifdef __KERNEL__ +/* Compile for reduced hardware mode only with this kernel config */ + +#ifdef CONFIG_ACPI_REDUCED_HARDWARE_ONLY +#define ACPI_REDUCED_HARDWARE 1 +#endif + #include #include #include -- cgit v1.2.3 From 1c0c5443de5f1f03ae2abce569fb673377f0fd0e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:37:02 +0100 Subject: ACPI / hotplug / PCI: Simplify disable_slot() After recent PCI core changes related to the rescan/remove locking, the ACPIPHP's disable_slot() function is only called under the general PCI rescan/remove lock, so it doesn't have to use dev_in_slot() any more to avoid race conditions. Make it simply walk the devices on the bus and drop the ones in the slot being disabled and drop dev_in_slot() which has no more users. Moreover, to avoid problems described in the changelog of commit 29ed1f29b68a (PCI: pciehp: Fix null pointer deref when hot-removing SR-IOV device), make disable_slot() carry out the list walk in reverse order. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 28 +++++----------------------- 1 file changed, 5 insertions(+), 23 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index e2a783fdb98f..f24c19c8f8c4 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -625,32 +625,15 @@ static void __ref enable_slot(struct acpiphp_slot *slot) } } -/* return first device in slot, acquiring a reference on it */ -static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot) -{ - struct pci_bus *bus = slot->bus; - struct pci_dev *dev; - struct pci_dev *ret = NULL; - - down_read(&pci_bus_sem); - list_for_each_entry(dev, &bus->devices, bus_list) - if (PCI_SLOT(dev->devfn) == slot->device) { - ret = pci_dev_get(dev); - break; - } - up_read(&pci_bus_sem); - - return ret; -} - /** * disable_slot - disable a slot * @slot: ACPI PHP slot */ static void disable_slot(struct acpiphp_slot *slot) { + struct pci_bus *bus = slot->bus; + struct pci_dev *dev, *prev; struct acpiphp_func *func; - struct pci_dev *pdev; /* * enable_slot() enumerates all functions in this device via @@ -658,10 +641,9 @@ static void disable_slot(struct acpiphp_slot *slot) * methods (_EJ0, etc.) or not. Therefore, we remove all functions * here. */ - while ((pdev = dev_in_slot(slot))) { - pci_stop_and_remove_bus_device(pdev); - pci_dev_put(pdev); - } + list_for_each_entry_safe_reverse(dev, prev, &bus->devices, bus_list) + if (PCI_SLOT(dev->devfn) == slot->device) + pci_stop_and_remove_bus_device(dev); list_for_each_entry(func, &slot->funcs, sibling) acpiphp_bus_trim(func_to_handle(func)); -- cgit v1.2.3 From 454481adf54417ef59b97e92ccb3dc69f3cd02c7 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:37:35 +0100 Subject: ACPI / hotplug / PCI: Proper kerneldoc comments for enumeration/removal Add proper kerneldoc comments describing acpiphp_enumerate_slots() and acpiphp_remove_slots(). Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f24c19c8f8c4..4bc716b2bbaa 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1001,9 +1001,12 @@ static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); } -/* - * Create hotplug slots for the PCI bus. - * It should always return 0 to avoid skipping following notifiers. +/** + * acpiphp_enumerate_slots - Enumerate PCI slots for a given bus. + * @bus: PCI bus to enumerate the slots for. + * + * A "slot" is an object associated with a PCI device number. All functions + * (PCI devices) with the same bus and device number belong to the same slot. */ void acpiphp_enumerate_slots(struct pci_bus *bus) { @@ -1076,7 +1079,10 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) } } -/* Destroy hotplug slots associated with the PCI bus */ +/** + * acpiphp_remove_slots - Remove slot objects associated with a given bus. + * @bus: PCI bus to remove the slot objects for. + */ void acpiphp_remove_slots(struct pci_bus *bus) { struct acpiphp_bridge *bridge; -- cgit v1.2.3 From 146fc68a4bdd78e49d56f1530f6b8072034cf3ef Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:38:15 +0100 Subject: ACPI / hotplug / PCI: Simplify register_slot() The err label in register_slot() is only jumped to from one place, so move the code under the label to that place and drop the label. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 4bc716b2bbaa..c97454c74c26 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -335,8 +335,10 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL); if (!slot) { - status = AE_NO_MEMORY; - goto err; + mutex_lock(&acpiphp_context_lock); + acpiphp_put_context(context); + mutex_unlock(&acpiphp_context_lock); + return AE_NO_MEMORY; } slot->bus = bridge->pci_bus; @@ -404,12 +406,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, } return AE_OK; - - err: - mutex_lock(&acpiphp_context_lock); - acpiphp_put_context(context); - mutex_unlock(&acpiphp_context_lock); - return status; } static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) -- cgit v1.2.3 From 4dc3082dc1dd1415177d71f15d4b19bebb1365c0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:38:52 +0100 Subject: ACPI / hotplug / PCI: Drop acpiphp_bus_trim() If trim_stale_devices() calls acpi_bus_trim() directly, we can save a potentially costly acpi_bus_get_device() invocation. After making that change acpiphp_bus_trim() would only be called from one place, so move the code from it to that place and drop it. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index c97454c74c26..caeef648287a 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -488,19 +488,6 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus) return max; } -/** - * acpiphp_bus_trim - Trim device objects in an ACPI namespace subtree. - * @handle: ACPI device object handle to start from. - */ -static void acpiphp_bus_trim(acpi_handle handle) -{ - struct acpi_device *adev = NULL; - - acpi_bus_get_device(handle, &adev); - if (adev) - acpi_bus_trim(adev); -} - /** * acpiphp_bus_add - Scan ACPI namespace subtree. * @handle: ACPI object handle to start the scan from. @@ -641,8 +628,12 @@ static void disable_slot(struct acpiphp_slot *slot) if (PCI_SLOT(dev->devfn) == slot->device) pci_stop_and_remove_bus_device(dev); - list_for_each_entry(func, &slot->funcs, sibling) - acpiphp_bus_trim(func_to_handle(func)); + list_for_each_entry(func, &slot->funcs, sibling) { + struct acpi_device *adev; + + if (!acpi_bus_get_device(func_to_handle(func), &adev)) + acpi_bus_trim(adev); + } slot->flags &= (~SLOT_ENABLED); } @@ -714,11 +705,12 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot) */ static void trim_stale_devices(struct pci_dev *dev) { - acpi_handle handle = ACPI_HANDLE(&dev->dev); + struct acpi_device *adev = ACPI_COMPANION(&dev->dev); struct pci_bus *bus = dev->subordinate; bool alive = false; - if (handle) { + if (adev) { + acpi_handle handle = adev->handle; acpi_status status; unsigned long long sta; @@ -734,8 +726,8 @@ static void trim_stale_devices(struct pci_dev *dev) } if (!alive) { pci_stop_and_remove_bus_device(dev); - if (handle) - acpiphp_bus_trim(handle); + if (adev) + acpi_bus_trim(adev); } else if (bus) { struct pci_dev *child, *tmp; -- cgit v1.2.3 From b2118d6a4073e394312072b6666cb576e18653b2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:39:20 +0100 Subject: ACPI / hotplug / PCI: Rework acpiphp_no_hotplug() If a struct acpi_device pointer is passed to acpiphp_no_hotplug() instead of an ACPI handle, the function won't need to call acpi_bus_get_device(), which may be costly, any more. Then, trim_stale_devices() can call acpiphp_no_hotplug() passing the struct acpi_device object it already has directly to that function. Make those changes and update slot_no_hotplug() accordingly. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index caeef648287a..a0d6c83ac27b 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -638,11 +638,8 @@ static void disable_slot(struct acpiphp_slot *slot) slot->flags &= (~SLOT_ENABLED); } -static bool acpiphp_no_hotplug(acpi_handle handle) +static bool acpiphp_no_hotplug(struct acpi_device *adev) { - struct acpi_device *adev = NULL; - - acpi_bus_get_device(handle, &adev); return adev && adev->flags.no_hotplug; } @@ -650,10 +647,13 @@ static bool slot_no_hotplug(struct acpiphp_slot *slot) { struct acpiphp_func *func; - list_for_each_entry(func, &slot->funcs, sibling) - if (acpiphp_no_hotplug(func_to_handle(func))) - return true; + list_for_each_entry(func, &slot->funcs, sibling) { + struct acpi_device *adev = NULL; + acpi_bus_get_device(func_to_handle(func), &adev); + if (acpiphp_no_hotplug(adev)) + return true; + } return false; } @@ -710,13 +710,12 @@ static void trim_stale_devices(struct pci_dev *dev) bool alive = false; if (adev) { - acpi_handle handle = adev->handle; acpi_status status; unsigned long long sta; - status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); + status = acpi_evaluate_integer(adev->handle, "_STA", NULL, &sta); alive = (ACPI_SUCCESS(status) && sta == ACPI_STA_ALL) - || acpiphp_no_hotplug(handle); + || acpiphp_no_hotplug(adev); } if (!alive) { u32 v; -- cgit v1.2.3 From bbcbfc0eed6220591ccc5752edd079099bb1920c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:39:33 +0100 Subject: ACPI / hotplug / PCI: Store acpi_device pointer in acpiphp_context After recent modifications of the ACPI core making it create a struct acpi_device object for every namespace node representing a device regardless of the current status of that device the ACPIPHP code can store a struct acpi_device pointer instead of an ACPI handle in struct acpiphp_context. This immediately makes it possible to avoid making potentially costly calls to acpi_bus_get_device() in two places and allows some more simplifications to be made going forward. The reason why that is correct is because ACPIPHP only installs hotify handlers for namespace nodes that exist when acpiphp_enumerate_slots() is called for their parent bridge. That only happens if the parent bridge has an ACPI companion associated with it, which means that the ACPI namespace scope in question has been scanned already at that point. That, in turn, means that struct acpi_device objects have been created for all namespace nodes in that scope and pointers to those objects can be stored directly instead of their ACPI handles. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp.h | 9 ++++++-- drivers/pci/hotplug/acpiphp_glue.c | 46 ++++++++++++++++++-------------------- 2 files changed, 29 insertions(+), 26 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index b6162be4df40..098ff425f850 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -117,8 +117,8 @@ struct acpiphp_func { }; struct acpiphp_context { - acpi_handle handle; struct acpiphp_func func; + struct acpi_device *adev; struct acpiphp_bridge *bridge; unsigned int refcount; }; @@ -128,9 +128,14 @@ static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func) return container_of(func, struct acpiphp_context, func); } +static inline struct acpi_device *func_to_acpi_device(struct acpiphp_func *func) +{ + return func_to_context(func)->adev; +} + static inline acpi_handle func_to_handle(struct acpiphp_func *func) { - return func_to_context(func)->handle; + return func_to_acpi_device(func)->handle; } /* diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index a0d6c83ac27b..896a13bf2e02 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -73,11 +73,11 @@ static void acpiphp_context_handler(acpi_handle handle, void *context) /** * acpiphp_init_context - Create hotplug context and grab a reference to it. - * @handle: ACPI object handle to create the context for. + * @adev: ACPI device object to create the context for. * * Call under acpiphp_context_lock. */ -static struct acpiphp_context *acpiphp_init_context(acpi_handle handle) +static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) { struct acpiphp_context *context; acpi_status status; @@ -86,9 +86,9 @@ static struct acpiphp_context *acpiphp_init_context(acpi_handle handle) if (!context) return NULL; - context->handle = handle; + context->adev = adev; context->refcount = 1; - status = acpi_attach_data(handle, acpiphp_context_handler, context); + status = acpi_attach_data(adev->handle, acpiphp_context_handler, context); if (ACPI_FAILURE(status)) { kfree(context); return NULL; @@ -118,7 +118,7 @@ static struct acpiphp_context *acpiphp_get_context(acpi_handle handle) /** * acpiphp_put_context - Drop a reference to ACPI hotplug context. - * @handle: ACPI object handle to put the context for. + * @context: ACPI hotplug context to drop a reference to. * * The context object is removed if there are no more references to it. * @@ -130,7 +130,7 @@ static void acpiphp_put_context(struct acpiphp_context *context) return; WARN_ON(context->bridge); - acpi_detach_data(context->handle, acpiphp_context_handler); + acpi_detach_data(context->adev->handle, acpiphp_context_handler); kfree(context); } @@ -216,7 +216,7 @@ static void dock_event(acpi_handle handle, u32 type, void *data) mutex_lock(&acpiphp_context_lock); context = acpiphp_get_context(handle); - if (!context || WARN_ON(context->handle != handle) + if (!context || WARN_ON(context->adev->handle != handle) || context->func.parent->is_going_away) { mutex_unlock(&acpiphp_context_lock); return; @@ -284,6 +284,7 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, { struct acpiphp_bridge *bridge = data; struct acpiphp_context *context; + struct acpi_device *adev; struct acpiphp_slot *slot; struct acpiphp_func *newfunc; acpi_status status = AE_OK; @@ -303,12 +304,14 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, "can't evaluate _ADR (%#x)\n", status); return AE_OK; } + if (acpi_bus_get_device(handle, &adev)) + return AE_OK; device = (adr >> 16) & 0xffff; function = adr & 0xffff; mutex_lock(&acpiphp_context_lock); - context = acpiphp_init_context(handle); + context = acpiphp_init_context(adev); if (!context) { mutex_unlock(&acpiphp_context_lock); acpi_handle_err(handle, "No hotplug context\n"); @@ -628,12 +631,8 @@ static void disable_slot(struct acpiphp_slot *slot) if (PCI_SLOT(dev->devfn) == slot->device) pci_stop_and_remove_bus_device(dev); - list_for_each_entry(func, &slot->funcs, sibling) { - struct acpi_device *adev; - - if (!acpi_bus_get_device(func_to_handle(func), &adev)) - acpi_bus_trim(adev); - } + list_for_each_entry(func, &slot->funcs, sibling) + acpi_bus_trim(func_to_acpi_device(func)); slot->flags &= (~SLOT_ENABLED); } @@ -647,13 +646,10 @@ static bool slot_no_hotplug(struct acpiphp_slot *slot) { struct acpiphp_func *func; - list_for_each_entry(func, &slot->funcs, sibling) { - struct acpi_device *adev = NULL; - - acpi_bus_get_device(func_to_handle(func), &adev); - if (acpiphp_no_hotplug(adev)) + list_for_each_entry(func, &slot->funcs, sibling) + if (acpiphp_no_hotplug(func_to_acpi_device(func))) return true; - } + return false; } @@ -908,7 +904,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) static void hotplug_event_work(void *data, u32 type) { struct acpiphp_context *context = data; - acpi_handle handle = context->handle; + acpi_handle handle = context->adev->handle; acpi_scan_lock_acquire(); @@ -967,7 +963,7 @@ static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) mutex_lock(&acpiphp_context_lock); context = acpiphp_get_context(handle); - if (!context || WARN_ON(context->handle != handle) + if (!context || WARN_ON(context->adev->handle != handle) || context->func.parent->is_going_away) goto err_out; @@ -998,16 +994,18 @@ static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) void acpiphp_enumerate_slots(struct pci_bus *bus) { struct acpiphp_bridge *bridge; + struct acpi_device *adev; acpi_handle handle; acpi_status status; if (acpiphp_disabled) return; - handle = ACPI_HANDLE(bus->bridge); - if (!handle) + adev = ACPI_COMPANION(bus->bridge); + if (!adev) return; + handle = adev->handle; bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL); if (!bridge) { acpi_handle_err(handle, "No memory for bridge object\n"); -- cgit v1.2.3 From b6708fbf98ac01d27c8d4d7f7b4fa87583b658cc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:39:58 +0100 Subject: ACPI / hotplug / PCI: Drop acpiphp_bus_add() acpiphp_bus_add() is only called from one place, so move the code out of it into that place and drop it. Also make that code use func_to_acpi_device() to get the struct acpi_device pointer it needs instead of calling acpi_bus_get_device() which may be costly. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 896a13bf2e02..27abd501c258 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -491,20 +491,6 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus) return max; } -/** - * acpiphp_bus_add - Scan ACPI namespace subtree. - * @handle: ACPI object handle to start the scan from. - */ -static void acpiphp_bus_add(acpi_handle handle) -{ - struct acpi_device *adev = NULL; - - acpi_bus_scan(handle); - acpi_bus_get_device(handle, &adev); - if (acpi_device_enumerated(adev)) - acpi_device_set_power(adev, ACPI_STATE_D0); -} - static void acpiphp_set_acpi_region(struct acpiphp_slot *slot) { struct acpiphp_func *func; @@ -544,9 +530,13 @@ static int acpiphp_rescan_slot(struct acpiphp_slot *slot) { struct acpiphp_func *func; - list_for_each_entry(func, &slot->funcs, sibling) - acpiphp_bus_add(func_to_handle(func)); + list_for_each_entry(func, &slot->funcs, sibling) { + struct acpi_device *adev = func_to_acpi_device(func); + acpi_bus_scan(adev->handle); + if (acpi_device_enumerated(adev)) + acpi_device_set_power(adev, ACPI_STATE_D0); + } return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0)); } -- cgit v1.2.3 From 661b40644190eb5987907584920cb11a4a2c7a9e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:40:25 +0100 Subject: ACPI / hotplug / PCI: Drop crit_sect locking After recent PCI core changes related to the rescan/remove locking, the code sections under crit_sect mutexes from ACPIPHP slot objects are always executed under the general PCI rescan/remove lock. For this reason, the crit_sect mutexes are simply redundant, so drop them. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp.h | 1 - drivers/pci/hotplug/acpiphp_glue.c | 23 +++-------------------- 2 files changed, 3 insertions(+), 21 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index 098ff425f850..373c7aa3b4a6 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -93,7 +93,6 @@ struct acpiphp_slot { struct list_head funcs; /* one slot may have different objects (i.e. for each function) */ struct slot *slot; - struct mutex crit_sect; u8 device; /* pci device# */ u32 flags; /* see below */ diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 27abd501c258..0961911c706e 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -347,7 +347,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, slot->bus = bridge->pci_bus; slot->device = device; INIT_LIST_HEAD(&slot->funcs); - mutex_init(&slot->crit_sect); list_add_tail(&slot->node, &bridge->slots); @@ -744,7 +743,6 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge) struct pci_bus *bus = slot->bus; struct pci_dev *dev, *tmp; - mutex_lock(&slot->crit_sect); if (slot_no_hotplug(slot)) { ; /* do nothing */ } else if (get_slot_status(slot) == ACPI_STA_ALL) { @@ -759,7 +757,6 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge) } else { disable_slot(slot); } - mutex_unlock(&slot->crit_sect); } } @@ -846,12 +843,8 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) } else { struct acpiphp_slot *slot = func->slot; - if (slot->flags & SLOT_IS_GOING_AWAY) - break; - - mutex_lock(&slot->crit_sect); - enable_slot(slot); - mutex_unlock(&slot->crit_sect); + if (!(slot->flags & SLOT_IS_GOING_AWAY)) + enable_slot(slot); } break; @@ -862,7 +855,6 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) acpiphp_check_bridge(bridge); } else { struct acpiphp_slot *slot = func->slot; - int ret; if (slot->flags & SLOT_IS_GOING_AWAY) break; @@ -871,10 +863,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) * Check if anything has changed in the slot and rescan * from the parent if that's the case. */ - mutex_lock(&slot->crit_sect); - ret = acpiphp_rescan_slot(slot); - mutex_unlock(&slot->crit_sect); - if (ret) + if (acpiphp_rescan_slot(slot)) acpiphp_check_bridge(func->parent); } break; @@ -1088,13 +1077,10 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot) if (slot->flags & SLOT_IS_GOING_AWAY) return -ENODEV; - mutex_lock(&slot->crit_sect); /* configure all functions */ if (!(slot->flags & SLOT_ENABLED)) enable_slot(slot); - mutex_unlock(&slot->crit_sect); - pci_unlock_rescan_remove(); return 0; } @@ -1110,8 +1096,6 @@ static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot) if (slot->flags & SLOT_IS_GOING_AWAY) return -ENODEV; - mutex_lock(&slot->crit_sect); - /* unconfigure all functions */ disable_slot(slot); @@ -1125,7 +1109,6 @@ static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot) break; } - mutex_unlock(&slot->crit_sect); return 0; } -- cgit v1.2.3 From b75cece1a79a6259185442004e040511ed3a7341 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:40:46 +0100 Subject: ACPI / hotplug / PCI: Simplify hotplug_event() A few lines of code can be cut from hotplug_event() by defining and initializing the slot variable at the top of the function, so do that. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 0961911c706e..d00da68752ea 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -817,6 +817,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) { struct acpiphp_context *context = data; struct acpiphp_func *func = &context->func; + struct acpiphp_slot *slot = func->slot; struct acpiphp_bridge *bridge; char objname[64]; struct acpi_buffer buffer = { .length = sizeof(objname), @@ -838,14 +839,11 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) pr_debug("%s: Bus check notify on %s\n", __func__, objname); pr_debug("%s: re-enumerating slots under %s\n", __func__, objname); - if (bridge) { + if (bridge) acpiphp_check_bridge(bridge); - } else { - struct acpiphp_slot *slot = func->slot; + else if (!(slot->flags & SLOT_IS_GOING_AWAY)) + enable_slot(slot); - if (!(slot->flags & SLOT_IS_GOING_AWAY)) - enable_slot(slot); - } break; case ACPI_NOTIFY_DEVICE_CHECK: @@ -853,12 +851,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) pr_debug("%s: Device check notify on %s\n", __func__, objname); if (bridge) { acpiphp_check_bridge(bridge); - } else { - struct acpiphp_slot *slot = func->slot; - - if (slot->flags & SLOT_IS_GOING_AWAY) - break; - + } else if (!(slot->flags & SLOT_IS_GOING_AWAY)) { /* * Check if anything has changed in the slot and rescan * from the parent if that's the case. @@ -871,7 +864,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_EJECT_REQUEST: /* request device eject */ pr_debug("%s: Device eject notify on %s\n", __func__, objname); - acpiphp_disable_and_eject_slot(func->slot); + acpiphp_disable_and_eject_slot(slot); break; } -- cgit v1.2.3 From 1d4a5b610e500fe860570db4ceb64e45255221ab Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:41:52 +0100 Subject: ACPI / hotplug / PCI: Use acpi_handle_debug() in hotplug_event() Make hotplug_event() use acpi_handle_debug() instead of an open-coded debug message printing and clean up the messages printed by it. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index d00da68752ea..64ad6eed983f 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -819,9 +819,6 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) struct acpiphp_func *func = &context->func; struct acpiphp_slot *slot = func->slot; struct acpiphp_bridge *bridge; - char objname[64]; - struct acpi_buffer buffer = { .length = sizeof(objname), - .pointer = objname }; mutex_lock(&acpiphp_context_lock); bridge = context->bridge; @@ -831,14 +828,11 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) mutex_unlock(&acpiphp_context_lock); pci_lock_rescan_remove(); - acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); switch (type) { case ACPI_NOTIFY_BUS_CHECK: /* bus re-enumerate */ - pr_debug("%s: Bus check notify on %s\n", __func__, objname); - pr_debug("%s: re-enumerating slots under %s\n", - __func__, objname); + acpi_handle_debug(handle, "Bus check in %s()\n", __func__); if (bridge) acpiphp_check_bridge(bridge); else if (!(slot->flags & SLOT_IS_GOING_AWAY)) @@ -848,7 +842,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_DEVICE_CHECK: /* device check */ - pr_debug("%s: Device check notify on %s\n", __func__, objname); + acpi_handle_debug(handle, "Device check in %s()\n", __func__); if (bridge) { acpiphp_check_bridge(bridge); } else if (!(slot->flags & SLOT_IS_GOING_AWAY)) { @@ -863,7 +857,7 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_EJECT_REQUEST: /* request device eject */ - pr_debug("%s: Device eject notify on %s\n", __func__, objname); + acpi_handle_debug(handle, "Eject request in %s()\n", __func__); acpiphp_disable_and_eject_slot(slot); break; } -- cgit v1.2.3 From d3a1ebb063cc45d5f4a5655534b87c3547fd9bbf Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:42:20 +0100 Subject: ACPI / hotplug / PCI: Do not pass ACPI handle to hotplug_event() Since hotplug_event() can get the ACPI handle needed for debug printouts from its context argument, there's no need to pass the handle to it. Moreover, the second argument's type may be changed to (struct acpiphp_context *), because that's what is always passed to hotplug_event() as the second argument anyway. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 64ad6eed983f..5da32eff3bc3 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -63,7 +63,7 @@ static DEFINE_MUTEX(acpiphp_context_lock); static void handle_hotplug_event(acpi_handle handle, u32 type, void *data); static void acpiphp_sanitize_bus(struct pci_bus *bus); static void acpiphp_set_hpp_values(struct pci_bus *bus); -static void hotplug_event(acpi_handle handle, u32 type, void *data); +static void hotplug_event(u32 type, struct acpiphp_context *context); static void free_bridge(struct kref *kref); static void acpiphp_context_handler(acpi_handle handle, void *context) @@ -225,7 +225,7 @@ static void dock_event(acpi_handle handle, u32 type, void *data) acpiphp_put_context(context); mutex_unlock(&acpiphp_context_lock); - hotplug_event(handle, type, data); + hotplug_event(type, context); put_bridge(context->func.parent); } @@ -813,9 +813,9 @@ void acpiphp_check_host_bridge(acpi_handle handle) static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot); -static void hotplug_event(acpi_handle handle, u32 type, void *data) +static void hotplug_event(u32 type, struct acpiphp_context *context) { - struct acpiphp_context *context = data; + acpi_handle handle = context->adev->handle; struct acpiphp_func *func = &context->func; struct acpiphp_slot *slot = func->slot; struct acpiphp_bridge *bridge; @@ -870,14 +870,14 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data) static void hotplug_event_work(void *data, u32 type) { struct acpiphp_context *context = data; - acpi_handle handle = context->adev->handle; acpi_scan_lock_acquire(); - hotplug_event(handle, type, context); + hotplug_event(type, context); acpi_scan_lock_release(); - acpi_evaluate_hotplug_ost(handle, type, ACPI_OST_SC_SUCCESS, NULL); + acpi_evaluate_hotplug_ost(context->adev->handle, type, + ACPI_OST_SC_SUCCESS, NULL); put_bridge(context->func.parent); } -- cgit v1.2.3 From 7c2e17714e190b2ef857e7e842464fb47ceca146 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:42:46 +0100 Subject: ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data() Introduce a new function, acpi_get_data_full(), working in analogy with acpi_get_data() except that it can execute a callback provided as its 4th argument right after acpi_ns_get_attached_data() has returned a success. That will allow Linux to reference count the object pointed to by *data before the namespace mutex is released so as to ensure that it will not be freed going forward until the reference to it acquired by acpi_get_data_full() is dropped. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/acpica/nsxfeval.c | 33 ++++++++++++++++++++++++++++++--- include/acpi/acpixf.h | 4 ++++ 2 files changed, 34 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index 1f0c28ba50df..d6b33bc7bab0 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -923,19 +923,22 @@ ACPI_EXPORT_SYMBOL(acpi_detach_data) /******************************************************************************* * - * FUNCTION: acpi_get_data + * FUNCTION: acpi_get_data_full * * PARAMETERS: obj_handle - Namespace node * handler - Handler used in call to attach_data * data - Where the data is returned + * callback - function to execute before returning * * RETURN: Status * - * DESCRIPTION: Retrieve data that was previously attached to a namespace node. + * DESCRIPTION: Retrieve data that was previously attached to a namespace node + * and execute a callback before returning. * ******************************************************************************/ acpi_status -acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data) +acpi_get_data_full(acpi_handle obj_handle, acpi_object_handler handler, + void **data, void (*callback)(void *)) { struct acpi_namespace_node *node; acpi_status status; @@ -960,10 +963,34 @@ acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data) } status = acpi_ns_get_attached_data(node, handler, data); + if (ACPI_SUCCESS(status) && callback) { + callback(*data); + } unlock_and_exit: (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return (status); } +ACPI_EXPORT_SYMBOL(acpi_get_data_full) + +/******************************************************************************* + * + * FUNCTION: acpi_get_data + * + * PARAMETERS: obj_handle - Namespace node + * handler - Handler used in call to attach_data + * data - Where the data is returned + * + * RETURN: Status + * + * DESCRIPTION: Retrieve data that was previously attached to a namespace node. + * + ******************************************************************************/ +acpi_status +acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data) +{ + return acpi_get_data_full(obj_handle, handler, data, NULL); +} + ACPI_EXPORT_SYMBOL(acpi_get_data) diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index fea6773f87fc..34bad459c11b 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -229,6 +229,10 @@ acpi_attach_data(acpi_handle object, acpi_object_handler handler, void *data); acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler); +acpi_status +acpi_get_data_full(acpi_handle object, acpi_object_handler handler, void **data, + void (*callback)(void *)); + acpi_status acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data); -- cgit v1.2.3 From 78ea4639a7647f2fcc957c3a532bde49df9895c7 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:43:05 +0100 Subject: ACPI / hotplug: Fix potential race in acpi_bus_notify() There is a slight possibility for the ACPI device object pointed to by adev in acpi_hotplug_notify_cb() to become invalid between the acpi_bus_get_device() that it comes from and the subsequent dereference of that pointer under get_device(). Namely, if acpi_scan_drop_device() runs in parallel with acpi_hotplug_notify_cb(), acpi_device_del_work_fn() queued up by it may delete the device object in question right after a successful execution of acpi_bus_get_device() in acpi_bus_notify(). An analogous problem is present in acpi_bus_notify() where the device pointer coming from acpi_bus_get_device() may become invalid before it subsequent dereference in the "if" block. To prevent that from happening, introduce a new function, acpi_bus_get_acpi_device(), working analogously to acpi_bus_get_device() except that it will grab a reference to the ACPI device object returned by it and it will do that under the ACPICA's namespace mutex. Then, make both acpi_hotplug_notify_cb() and acpi_bus_notify() use acpi_bus_get_acpi_device() instead of acpi_bus_get_device() so as to ensure that the pointers used by them will not become stale at one point. In addition to that, introduce acpi_bus_put_acpi_device() as a wrapper around put_device() to be used along with acpi_bus_get_acpi_device() and make the (new) users of the latter use acpi_bus_put_acpi_device() too. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/bus.c | 6 ++++-- drivers/acpi/scan.c | 42 ++++++++++++++++++++++++++++++++++-------- include/acpi/acpi_bus.h | 2 ++ 3 files changed, 40 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index fcb59c21c68d..c3237774632f 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -340,7 +340,7 @@ static void acpi_bus_osc_support(void) */ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { - struct acpi_device *device = NULL; + struct acpi_device *device; struct acpi_driver *driver; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", @@ -387,12 +387,14 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; } - acpi_bus_get_device(handle, &device); + device = acpi_bus_get_acpi_device(handle); if (device) { driver = device->driver; if (driver && driver->ops.notify && (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) driver->ops.notify(device, type); + + acpi_bus_put_acpi_device(device); } } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 7384158c7f87..59eba29a6066 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -476,7 +476,7 @@ static void acpi_device_hotplug(void *data, u32 src) out: acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL); - put_device(&adev->dev); + acpi_bus_put_acpi_device(adev); mutex_unlock(&acpi_scan_lock); unlock_device_hotplug(); } @@ -488,9 +488,6 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) struct acpi_device *adev; acpi_status status; - if (acpi_bus_get_device(handle, &adev)) - goto err_out; - switch (type) { case ACPI_NOTIFY_BUS_CHECK: acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); @@ -512,12 +509,15 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) /* non-hotplug event; possibly handled by other handler */ return; } - get_device(&adev->dev); + adev = acpi_bus_get_acpi_device(handle); + if (!adev) + goto err_out; + status = acpi_hotplug_execute(acpi_device_hotplug, adev, type); if (ACPI_SUCCESS(status)) return; - put_device(&adev->dev); + acpi_bus_put_acpi_device(adev); err_out: acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); @@ -1112,14 +1112,16 @@ static void acpi_scan_drop_device(acpi_handle handle, void *context) mutex_unlock(&acpi_device_del_lock); } -int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) +static int acpi_get_device_data(acpi_handle handle, struct acpi_device **device, + void (*callback)(void *)) { acpi_status status; if (!device) return -EINVAL; - status = acpi_get_data(handle, acpi_scan_drop_device, (void **)device); + status = acpi_get_data_full(handle, acpi_scan_drop_device, + (void **)device, callback); if (ACPI_FAILURE(status) || !*device) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", handle)); @@ -1127,8 +1129,32 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) } return 0; } + +int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) +{ + return acpi_get_device_data(handle, device, NULL); +} EXPORT_SYMBOL(acpi_bus_get_device); +static void get_acpi_device(void *dev) +{ + if (dev) + get_device(&((struct acpi_device *)dev)->dev); +} + +struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle) +{ + struct acpi_device *adev = NULL; + + acpi_get_device_data(handle, &adev, get_acpi_device); + return adev; +} + +void acpi_bus_put_acpi_device(struct acpi_device *adev) +{ + put_device(&adev->dev); +} + int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)) { diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8256eb4ad057..94fd61a0456d 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -381,6 +381,8 @@ extern int unregister_acpi_notifier(struct notifier_block *); */ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); +struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); +void acpi_bus_put_acpi_device(struct acpi_device *adev); acpi_status acpi_bus_get_status_handle(acpi_handle handle, unsigned long long *sta); int acpi_bus_get_status(struct acpi_device *device); -- cgit v1.2.3 From e525506fcb67a9bbd94f01eac84af802139004eb Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:43:17 +0100 Subject: ACPI / hotplug / PCI: Define hotplug context lock in the core Subsequent changes will require the ACPI core to acquire the lock protecting the ACPIPHP hotplug contexts, so move the definition of the lock to the core and change its name to be more generic. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/scan.c | 11 ++++++++ drivers/pci/hotplug/acpiphp_glue.c | 51 +++++++++++++++++++------------------- include/acpi/acpi_bus.h | 2 ++ 3 files changed, 38 insertions(+), 26 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 59eba29a6066..d64a5826ef35 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -41,6 +41,7 @@ static DEFINE_MUTEX(acpi_scan_lock); static LIST_HEAD(acpi_scan_handlers_list); DEFINE_MUTEX(acpi_device_lock); LIST_HEAD(acpi_wakeup_device_list); +static DEFINE_MUTEX(acpi_hp_context_lock); struct acpi_device_bus_id{ char bus_id[15]; @@ -60,6 +61,16 @@ void acpi_scan_lock_release(void) } EXPORT_SYMBOL_GPL(acpi_scan_lock_release); +void acpi_lock_hp_context(void) +{ + mutex_lock(&acpi_hp_context_lock); +} + +void acpi_unlock_hp_context(void) +{ + mutex_unlock(&acpi_hp_context_lock); +} + int acpi_scan_add_handler(struct acpi_scan_handler *handler) { if (!handler || !handler->attach) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 5da32eff3bc3..8139a4b0d389 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -58,7 +58,6 @@ static LIST_HEAD(bridge_list); static DEFINE_MUTEX(bridge_mutex); -static DEFINE_MUTEX(acpiphp_context_lock); static void handle_hotplug_event(acpi_handle handle, u32 type, void *data); static void acpiphp_sanitize_bus(struct pci_bus *bus); @@ -75,7 +74,7 @@ static void acpiphp_context_handler(acpi_handle handle, void *context) * acpiphp_init_context - Create hotplug context and grab a reference to it. * @adev: ACPI device object to create the context for. * - * Call under acpiphp_context_lock. + * Call under acpi_hp_context_lock. */ static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) { @@ -100,7 +99,7 @@ static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) * acpiphp_get_context - Get hotplug context and grab a reference to it. * @handle: ACPI object handle to get the context for. * - * Call under acpiphp_context_lock. + * Call under acpi_hp_context_lock. */ static struct acpiphp_context *acpiphp_get_context(acpi_handle handle) { @@ -122,7 +121,7 @@ static struct acpiphp_context *acpiphp_get_context(acpi_handle handle) * * The context object is removed if there are no more references to it. * - * Call under acpiphp_context_lock. + * Call under acpi_hp_context_lock. */ static void acpiphp_put_context(struct acpiphp_context *context) { @@ -151,7 +150,7 @@ static void free_bridge(struct kref *kref) struct acpiphp_slot *slot, *next; struct acpiphp_func *func, *tmp; - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); bridge = container_of(kref, struct acpiphp_bridge, ref); @@ -175,7 +174,7 @@ static void free_bridge(struct kref *kref) pci_dev_put(bridge->pci_dev); kfree(bridge); - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); } /* @@ -214,16 +213,16 @@ static void dock_event(acpi_handle handle, u32 type, void *data) { struct acpiphp_context *context; - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); context = acpiphp_get_context(handle); if (!context || WARN_ON(context->adev->handle != handle) || context->func.parent->is_going_away) { - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); return; } get_bridge(context->func.parent); acpiphp_put_context(context); - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); hotplug_event(type, context); @@ -310,17 +309,17 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, device = (adr >> 16) & 0xffff; function = adr & 0xffff; - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); context = acpiphp_init_context(adev); if (!context) { - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); acpi_handle_err(handle, "No hotplug context\n"); return AE_NOT_EXIST; } newfunc = &context->func; newfunc->function = function; newfunc->parent = bridge; - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); if (acpi_has_method(handle, "_EJ0")) newfunc->flags = FUNC_HAS_EJ0; @@ -338,9 +337,9 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL); if (!slot) { - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); acpiphp_put_context(context); - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); return AE_NO_MEMORY; } @@ -415,7 +414,7 @@ static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) struct acpiphp_context *context; struct acpiphp_bridge *bridge = NULL; - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); context = acpiphp_get_context(handle); if (context) { bridge = context->bridge; @@ -424,7 +423,7 @@ static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) acpiphp_put_context(context); } - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); return bridge; } @@ -458,9 +457,9 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_del(&bridge->list); mutex_unlock(&bridge_mutex); - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); bridge->is_going_away = true; - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); } /** @@ -820,12 +819,12 @@ static void hotplug_event(u32 type, struct acpiphp_context *context) struct acpiphp_slot *slot = func->slot; struct acpiphp_bridge *bridge; - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); bridge = context->bridge; if (bridge) get_bridge(bridge); - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); pci_lock_rescan_remove(); @@ -927,7 +926,7 @@ static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) goto out; } - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); context = acpiphp_get_context(handle); if (!context || WARN_ON(context->adev->handle != handle) || context->func.parent->is_going_away) @@ -937,13 +936,13 @@ static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) acpiphp_put_context(context); status = acpi_hotplug_execute(hotplug_event_work, context, type); if (ACPI_SUCCESS(status)) { - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); return; } put_bridge(context->func.parent); err_out: - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; out: @@ -999,10 +998,10 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) * parent is going to be handled by pciehp, in which case this * bridge is not interesting to us either. */ - mutex_lock(&acpiphp_context_lock); + acpi_lock_hp_context(); context = acpiphp_get_context(handle); if (!context) { - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); put_device(&bus->dev); pci_dev_put(bridge->pci_dev); kfree(bridge); @@ -1012,7 +1011,7 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) context->bridge = bridge; /* Get a reference to the parent bridge. */ get_bridge(context->func.parent); - mutex_unlock(&acpiphp_context_lock); + acpi_unlock_hp_context(); } /* must be added to the list prior to calling register_slot */ diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 94fd61a0456d..0c82708ff08a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -404,6 +404,8 @@ static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } void acpi_scan_lock_acquire(void); void acpi_scan_lock_release(void); +void acpi_lock_hp_context(void); +void acpi_unlock_hp_context(void); int acpi_scan_add_handler(struct acpi_scan_handler *handler); int acpi_bus_register_driver(struct acpi_driver *driver); void acpi_bus_unregister_driver(struct acpi_driver *driver); -- cgit v1.2.3 From 3c2cc7ff9e2522e42468f8e81a7277be386c5ec4 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 6 Feb 2014 17:31:37 +0100 Subject: ACPI / hotplug / PCI: Consolidate ACPIPHP with ACPI core hotplug The ACPI-based PCI hotplug (ACPIPHP) code currently attaches its hotplug context objects directly to ACPI namespace nodes representing hotplug devices. However, after recent changes causing struct acpi_device to be created for every namespace node representing a device (regardless of its status), that is not necessary any more. Moreover, it's vulnerable to the theoretical issue that the ACPI handle passed in the context between handle_hotplug_event() and hotplug_event_work() may become invalid in the meantime (as a result of a concurrent table unload). In principle, this issue might be addressed by adding a non-empty release handler for ACPIPHP hotplug context objects analogous to acpi_scan_drop_device(), but that would duplicate the code in that function and in acpi_device_del_work_fn(). For this reason, it's better to modify ACPIPHP to attach its device hotplug contexts to struct device objects representing hotplug devices and make it use acpi_hotplug_notify_cb() as its notify handler. At the same time, acpi_device_hotplug() can be modified to dispatch the new .hp.event() callback pointing to acpiphp_hotplug_event() from ACPI device objects associated with PCI devices or use the generic ACPI device hotplug code for device objects with matching scan handlers. This allows the existing code duplication between ACPIPHP and the ACPI core to be reduced too and makes further ACPI-based device hotplug consolidation possible. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 137 +++++++++++++++++++----------- drivers/pci/hotplug/acpiphp.h | 9 +- drivers/pci/hotplug/acpiphp_glue.c | 168 +++++++++---------------------------- include/acpi/acpi_bus.h | 25 +++++- 4 files changed, 158 insertions(+), 181 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index d64a5826ef35..984eaff235df 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -450,43 +450,61 @@ static int acpi_scan_bus_check(struct acpi_device *adev) return 0; } +static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) +{ + switch (type) { + case ACPI_NOTIFY_BUS_CHECK: + return acpi_scan_bus_check(adev); + case ACPI_NOTIFY_DEVICE_CHECK: + return acpi_scan_device_check(adev); + case ACPI_NOTIFY_EJECT_REQUEST: + case ACPI_OST_EC_OSPM_EJECT: + return acpi_scan_hot_remove(adev); + } + return -EINVAL; +} + static void acpi_device_hotplug(void *data, u32 src) { u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; struct acpi_device *adev = data; - int error; + int error = -ENODEV; lock_device_hotplug(); mutex_lock(&acpi_scan_lock); /* * The device object's ACPI handle cannot become invalid as long as we - * are holding acpi_scan_lock, but it may have become invalid before + * are holding acpi_scan_lock, but it might have become invalid before * that lock was acquired. */ if (adev->handle == INVALID_ACPI_HANDLE) - goto out; + goto err_out; - switch (src) { - case ACPI_NOTIFY_BUS_CHECK: - error = acpi_scan_bus_check(adev); - break; - case ACPI_NOTIFY_DEVICE_CHECK: - error = acpi_scan_device_check(adev); - break; - case ACPI_NOTIFY_EJECT_REQUEST: - case ACPI_OST_EC_OSPM_EJECT: - error = acpi_scan_hot_remove(adev); - break; - default: - error = -EINVAL; - break; + if (adev->flags.hotplug_notify) { + error = acpi_generic_hotplug_event(adev, src); + } else { + int (*event)(struct acpi_device *, u32); + + acpi_lock_hp_context(); + event = adev->hp ? adev->hp->event : NULL; + acpi_unlock_hp_context(); + /* + * There may be additional notify handlers for device objects + * without the .event() callback, so ignore them here. + */ + if (event) + error = event(adev, src); + else + goto out; } if (!error) ost_code = ACPI_OST_SC_SUCCESS; - out: + err_out: acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL); + + out: acpi_bus_put_acpi_device(adev); mutex_unlock(&acpi_scan_lock); unlock_device_hotplug(); @@ -494,8 +512,8 @@ static void acpi_device_hotplug(void *data, u32 src) static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) { - u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; struct acpi_scan_handler *handler = data; + u32 ost_code = ACPI_OST_SC_SUCCESS; struct acpi_device *adev; acpi_status status; @@ -503,26 +521,49 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_BUS_CHECK: acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); break; + case ACPI_NOTIFY_DEVICE_CHECK: acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); break; + case ACPI_NOTIFY_EJECT_REQUEST: acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); - if (!handler->hotplug.enabled) { + if (handler && !handler->hotplug.enabled) { acpi_handle_err(handle, "Eject disabled\n"); ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; - goto err_out; + goto out; } acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); break; - default: - /* non-hotplug event; possibly handled by other handler */ + + case ACPI_NOTIFY_DEVICE_WAKE: return; + + case ACPI_NOTIFY_FREQUENCY_MISMATCH: + acpi_handle_err(handle, "Device cannot be configured due " + "to a frequency mismatch\n"); + goto out; + + case ACPI_NOTIFY_BUS_MODE_MISMATCH: + acpi_handle_err(handle, "Device cannot be configured due " + "to a bus mode mismatch\n"); + goto out; + + case ACPI_NOTIFY_POWER_FAULT: + acpi_handle_err(handle, "Device has suffered a power fault\n"); + goto out; + + default: + acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type); + ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY; + goto out; } + + ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; adev = acpi_bus_get_acpi_device(handle); if (!adev) - goto err_out; + goto out; status = acpi_hotplug_execute(acpi_device_hotplug, adev, type); if (ACPI_SUCCESS(status)) @@ -530,10 +571,22 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) acpi_bus_put_acpi_device(adev); - err_out: + out: acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); } +void acpi_install_hotplug_notify_handler(acpi_handle handle, void *data) +{ + acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, + acpi_hotplug_notify_cb, data); +} + +void acpi_remove_hotplug_notify_handler(acpi_handle handle) +{ + acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, + acpi_hotplug_notify_cb); +} + static ssize_t real_power_state_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1976,33 +2029,21 @@ void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val) mutex_unlock(&acpi_scan_lock); } -static void acpi_scan_init_hotplug(acpi_handle handle, int type) +static void acpi_scan_init_hotplug(struct acpi_device *adev) { - struct acpi_device_pnp pnp = {}; struct acpi_hardware_id *hwid; - struct acpi_scan_handler *handler; - INIT_LIST_HEAD(&pnp.ids); - acpi_set_pnp_ids(handle, &pnp, type); - - if (!pnp.type.hardware_id) - goto out; + list_for_each_entry(hwid, &adev->pnp.ids, list) { + struct acpi_scan_handler *handler; - /* - * This relies on the fact that acpi_install_notify_handler() will not - * install the same notify handler routine twice for the same handle. - */ - list_for_each_entry(hwid, &pnp.ids, list) { handler = acpi_scan_match_handler(hwid->id, NULL); - if (handler) { - acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - acpi_hotplug_notify_cb, handler); - break; - } - } + if (!handler) + continue; -out: - acpi_free_pnp_ids(&pnp); + acpi_install_hotplug_notify_handler(adev->handle, handler); + adev->flags.hotplug_notify = true; + break; + } } static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used, @@ -2026,12 +2067,12 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used, return AE_OK; } - acpi_scan_init_hotplug(handle, type); - acpi_add_single_object(&device, handle, type, sta); if (!device) return AE_CTRL_DEPTH; + acpi_scan_init_hotplug(device); + out: if (!*return_value) *return_value = device; diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index 373c7aa3b4a6..d7c1fc9712ad 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -116,12 +116,17 @@ struct acpiphp_func { }; struct acpiphp_context { + struct acpi_hotplug_context hp; struct acpiphp_func func; - struct acpi_device *adev; struct acpiphp_bridge *bridge; unsigned int refcount; }; +static inline struct acpiphp_context *to_acpiphp_context(struct acpi_hotplug_context *hp) +{ + return container_of(hp, struct acpiphp_context, hp); +} + static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func) { return container_of(func, struct acpiphp_context, func); @@ -129,7 +134,7 @@ static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func) static inline struct acpi_device *func_to_acpi_device(struct acpiphp_func *func) { - return func_to_context(func)->adev; + return func_to_context(func)->hp.self; } static inline acpi_handle func_to_handle(struct acpiphp_func *func) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 8139a4b0d389..7c498d663eb3 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -59,17 +59,12 @@ static LIST_HEAD(bridge_list); static DEFINE_MUTEX(bridge_mutex); -static void handle_hotplug_event(acpi_handle handle, u32 type, void *data); +static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type); static void acpiphp_sanitize_bus(struct pci_bus *bus); static void acpiphp_set_hpp_values(struct pci_bus *bus); static void hotplug_event(u32 type, struct acpiphp_context *context); static void free_bridge(struct kref *kref); -static void acpiphp_context_handler(acpi_handle handle, void *context) -{ - /* Intentionally empty. */ -} - /** * acpiphp_init_context - Create hotplug context and grab a reference to it. * @adev: ACPI device object to create the context for. @@ -79,39 +74,31 @@ static void acpiphp_context_handler(acpi_handle handle, void *context) static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) { struct acpiphp_context *context; - acpi_status status; context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) return NULL; - context->adev = adev; context->refcount = 1; - status = acpi_attach_data(adev->handle, acpiphp_context_handler, context); - if (ACPI_FAILURE(status)) { - kfree(context); - return NULL; - } + acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event); return context; } /** * acpiphp_get_context - Get hotplug context and grab a reference to it. - * @handle: ACPI object handle to get the context for. + * @adev: ACPI device object to get the context for. * * Call under acpi_hp_context_lock. */ -static struct acpiphp_context *acpiphp_get_context(acpi_handle handle) +static struct acpiphp_context *acpiphp_get_context(struct acpi_device *adev) { - struct acpiphp_context *context = NULL; - acpi_status status; - void *data; + struct acpiphp_context *context; - status = acpi_get_data(handle, acpiphp_context_handler, &data); - if (ACPI_SUCCESS(status)) { - context = data; - context->refcount++; - } + if (!adev->hp) + return NULL; + + context = to_acpiphp_context(adev->hp); + context->refcount++; return context; } @@ -129,7 +116,7 @@ static void acpiphp_put_context(struct acpiphp_context *context) return; WARN_ON(context->bridge); - acpi_detach_data(context->adev->handle, acpiphp_context_handler); + context->hp.self->hp = NULL; kfree(context); } @@ -211,22 +198,13 @@ static void post_dock_fixups(acpi_handle not_used, u32 event, void *data) static void dock_event(acpi_handle handle, u32 type, void *data) { - struct acpiphp_context *context; + struct acpi_device *adev; - acpi_lock_hp_context(); - context = acpiphp_get_context(handle); - if (!context || WARN_ON(context->adev->handle != handle) - || context->func.parent->is_going_away) { - acpi_unlock_hp_context(); - return; + adev = acpi_bus_get_acpi_device(handle); + if (adev) { + acpiphp_hotplug_event(adev, type); + acpi_bus_put_acpi_device(adev); } - get_bridge(context->func.parent); - acpiphp_put_context(context); - acpi_unlock_hp_context(); - - hotplug_event(type, context); - - put_bridge(context->func.parent); } static const struct acpi_dock_ops acpiphp_dock_ops = { @@ -397,25 +375,23 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, } /* install notify handler */ - if (!(newfunc->flags & FUNC_HAS_DCK)) { - status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - handle_hotplug_event, - context); - if (ACPI_FAILURE(status)) - acpi_handle_err(handle, - "failed to install notify handler\n"); - } + if (!(newfunc->flags & FUNC_HAS_DCK)) + acpi_install_hotplug_notify_handler(handle, NULL); return AE_OK; } static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) { + struct acpi_device *adev = acpi_bus_get_acpi_device(handle); struct acpiphp_context *context; struct acpiphp_bridge *bridge = NULL; + if (!adev) + return NULL; + acpi_lock_hp_context(); - context = acpiphp_get_context(handle); + context = acpiphp_get_context(adev); if (context) { bridge = context->bridge; if (bridge) @@ -424,6 +400,7 @@ static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) acpiphp_put_context(context); } acpi_unlock_hp_context(); + acpi_bus_put_acpi_device(adev); return bridge; } @@ -431,7 +408,6 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) { struct acpiphp_slot *slot; struct acpiphp_func *func; - acpi_status status; list_for_each_entry(slot, &bridge->slots, node) { list_for_each_entry(func, &slot->funcs, sibling) { @@ -440,13 +416,8 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) if (is_dock_device(handle)) unregister_hotplug_dock_device(handle); - if (!(func->flags & FUNC_HAS_DCK)) { - status = acpi_remove_notify_handler(handle, - ACPI_SYSTEM_NOTIFY, - handle_hotplug_event); - if (ACPI_FAILURE(status)) - pr_err("failed to remove notify handler\n"); - } + if (!(func->flags & FUNC_HAS_DCK)) + acpi_remove_hotplug_notify_handler(handle); } slot->flags |= SLOT_IS_GOING_AWAY; if (slot->slot) @@ -814,7 +785,7 @@ static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot); static void hotplug_event(u32 type, struct acpiphp_context *context) { - acpi_handle handle = context->adev->handle; + acpi_handle handle = context->hp.self->handle; struct acpiphp_func *func = &context->func; struct acpiphp_slot *slot = func->slot; struct acpiphp_bridge *bridge; @@ -866,87 +837,24 @@ static void hotplug_event(u32 type, struct acpiphp_context *context) put_bridge(bridge); } -static void hotplug_event_work(void *data, u32 type) -{ - struct acpiphp_context *context = data; - - acpi_scan_lock_acquire(); - - hotplug_event(type, context); - - acpi_scan_lock_release(); - acpi_evaluate_hotplug_ost(context->adev->handle, type, - ACPI_OST_SC_SUCCESS, NULL); - put_bridge(context->func.parent); -} - -/** - * handle_hotplug_event - handle ACPI hotplug event - * @handle: Notify()'ed acpi_handle - * @type: Notify code - * @data: pointer to acpiphp_context structure - * - * Handles ACPI event notification on slots. - */ -static void handle_hotplug_event(acpi_handle handle, u32 type, void *data) +static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type) { struct acpiphp_context *context; - u32 ost_code = ACPI_OST_SC_SUCCESS; - acpi_status status; - - switch (type) { - case ACPI_NOTIFY_BUS_CHECK: - case ACPI_NOTIFY_DEVICE_CHECK: - break; - case ACPI_NOTIFY_EJECT_REQUEST: - ost_code = ACPI_OST_SC_EJECT_IN_PROGRESS; - acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); - break; - - case ACPI_NOTIFY_DEVICE_WAKE: - return; - - case ACPI_NOTIFY_FREQUENCY_MISMATCH: - acpi_handle_err(handle, "Device cannot be configured due " - "to a frequency mismatch\n"); - goto out; - - case ACPI_NOTIFY_BUS_MODE_MISMATCH: - acpi_handle_err(handle, "Device cannot be configured due " - "to a bus mode mismatch\n"); - goto out; - - case ACPI_NOTIFY_POWER_FAULT: - acpi_handle_err(handle, "Device has suffered a power fault\n"); - goto out; - - default: - acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type); - ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY; - goto out; - } acpi_lock_hp_context(); - context = acpiphp_get_context(handle); - if (!context || WARN_ON(context->adev->handle != handle) - || context->func.parent->is_going_away) - goto err_out; - - get_bridge(context->func.parent); - acpiphp_put_context(context); - status = acpi_hotplug_execute(hotplug_event_work, context, type); - if (ACPI_SUCCESS(status)) { + context = acpiphp_get_context(adev); + if (!context || context->func.parent->is_going_away) { acpi_unlock_hp_context(); - return; + return -ENODATA; } - put_bridge(context->func.parent); - - err_out: + get_bridge(context->func.parent); + acpiphp_put_context(context); acpi_unlock_hp_context(); - ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; - out: - acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); + hotplug_event(type, context); + + put_bridge(context->func.parent); + return 0; } /** @@ -999,7 +907,7 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) * bridge is not interesting to us either. */ acpi_lock_hp_context(); - context = acpiphp_get_context(handle); + context = acpiphp_get_context(adev); if (!context) { acpi_unlock_hp_context(); put_device(&bus->dev); diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 0c82708ff08a..53ce357f6335 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -136,6 +136,16 @@ struct acpi_scan_handler { struct acpi_hotplug_profile hotplug; }; +/* + * ACPI Hotplug Context + * -------------------- + */ + +struct acpi_hotplug_context { + struct acpi_device *self; + int (*event)(struct acpi_device *, u32); +}; + /* * ACPI Driver * ----------- @@ -190,7 +200,8 @@ struct acpi_device_flags { u32 initialized:1; u32 visited:1; u32 no_hotplug:1; - u32 reserved:24; + u32 hotplug_notify:1; + u32 reserved:23; }; /* File System */ @@ -329,6 +340,7 @@ struct acpi_device { struct acpi_device_perf performance; struct acpi_device_dir dir; struct acpi_scan_handler *handler; + struct acpi_hotplug_context *hp; struct acpi_driver *driver; void *driver_data; struct device dev; @@ -351,6 +363,15 @@ static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) *((u32 *)&adev->status) = sta; } +static inline void acpi_set_hp_context(struct acpi_device *adev, + struct acpi_hotplug_context *hp, + int (*event)(struct acpi_device *, u32)) +{ + hp->self = adev; + hp->event = event; + adev->hp = hp; +} + /* acpi_device.dev.bus == &acpi_bus_type */ extern struct bus_type acpi_bus_type; @@ -425,6 +446,8 @@ static inline bool acpi_device_enumerated(struct acpi_device *adev) typedef void (*acpi_hp_callback)(void *data, u32 src); acpi_status acpi_hotplug_execute(acpi_hp_callback func, void *data, u32 src); +void acpi_install_hotplug_notify_handler(acpi_handle handle, void *data); +void acpi_remove_hotplug_notify_handler(acpi_handle handle); /** * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver -- cgit v1.2.3 From dd2151be28b9ed734fc5738ac675ed7e234847e3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:44:02 +0100 Subject: ACPI / hotplug / PCI: Rework the handling of eject requests To avoid the need to install a hotplug notify handler for each ACPI namespace node representing a device and having a matching scan handler, move the check whether or not the ejection of the given device is enabled through its scan handler from acpi_hotplug_notify_cb() to acpi_generic_hotplug_event(). Also, move the execution of ACPI_OST_SC_EJECT_IN_PROGRESS _OST to acpi_generic_hotplug_event(), because in acpi_hotplug_notify_cb() or in acpi_eject_store() we really don't know whether or not the eject is going to be in progress (for example, acpi_hotplug_execute() may still fail without queuing up the work item). Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/scan.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 984eaff235df..a3f5d6eabe46 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -459,6 +459,12 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) return acpi_scan_device_check(adev); case ACPI_NOTIFY_EJECT_REQUEST: case ACPI_OST_EC_OSPM_EJECT: + if (adev->handler && !adev->handler->hotplug.enabled) { + dev_info(&adev->dev, "Eject disabled\n"); + return -EPERM; + } + acpi_evaluate_hotplug_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST, + ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); return acpi_scan_hot_remove(adev); } return -EINVAL; @@ -483,6 +489,10 @@ static void acpi_device_hotplug(void *data, u32 src) if (adev->flags.hotplug_notify) { error = acpi_generic_hotplug_event(adev, src); + if (error == -EPERM) { + ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; + goto err_out; + } } else { int (*event)(struct acpi_device *, u32); @@ -512,7 +522,6 @@ static void acpi_device_hotplug(void *data, u32 src) static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) { - struct acpi_scan_handler *handler = data; u32 ost_code = ACPI_OST_SC_SUCCESS; struct acpi_device *adev; acpi_status status; @@ -528,13 +537,6 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_EJECT_REQUEST: acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); - if (handler && !handler->hotplug.enabled) { - acpi_handle_err(handle, "Eject disabled\n"); - ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; - goto out; - } - acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, - ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); break; case ACPI_NOTIFY_DEVICE_WAKE: @@ -632,8 +634,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable) return -ENODEV; - acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, - ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); get_device(&acpi_device->dev); status = acpi_hotplug_execute(acpi_device_hotplug, acpi_device, ACPI_OST_EC_OSPM_EJECT); -- cgit v1.2.3 From 5e6f236c263117cef5f0d68e3fec241ba2adc4fc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 6 Feb 2014 13:57:58 +0100 Subject: ACPI / hotplug / PCI: Simplify acpi_install_hotplug_notify_handler() Since acpi_hotplug_notify_cb() does not use its data argument any more, the second argument of acpi_install_hotplug_notify_handler() can be dropped, so do that and update its callers accordingly. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 6 +++--- drivers/pci/hotplug/acpiphp_glue.c | 2 +- include/acpi/acpi_bus.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index a3f5d6eabe46..59f9e272562e 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -577,10 +577,10 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); } -void acpi_install_hotplug_notify_handler(acpi_handle handle, void *data) +void acpi_install_hotplug_notify_handler(acpi_handle handle) { acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - acpi_hotplug_notify_cb, data); + acpi_hotplug_notify_cb, NULL); } void acpi_remove_hotplug_notify_handler(acpi_handle handle) @@ -2040,7 +2040,7 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev) if (!handler) continue; - acpi_install_hotplug_notify_handler(adev->handle, handler); + acpi_install_hotplug_notify_handler(adev->handle); adev->flags.hotplug_notify = true; break; } diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 7c498d663eb3..f3c49c442d93 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -376,7 +376,7 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, /* install notify handler */ if (!(newfunc->flags & FUNC_HAS_DCK)) - acpi_install_hotplug_notify_handler(handle, NULL); + acpi_install_hotplug_notify_handler(handle); return AE_OK; } diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 53ce357f6335..907d5078f78a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -446,7 +446,7 @@ static inline bool acpi_device_enumerated(struct acpi_device *adev) typedef void (*acpi_hp_callback)(void *data, u32 src); acpi_status acpi_hotplug_execute(acpi_hp_callback func, void *data, u32 src); -void acpi_install_hotplug_notify_handler(acpi_handle handle, void *data); +void acpi_install_hotplug_notify_handler(acpi_handle handle); void acpi_remove_hotplug_notify_handler(acpi_handle handle); /** -- cgit v1.2.3 From 1a699476e25814343766342672c655fb135224cc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 6 Feb 2014 13:58:13 +0100 Subject: ACPI / hotplug / PCI: Hotplug notifications from acpi_bus_notify() Since acpi_bus_notify() is executed on all notifications for all devices anyway, make it execute acpi_device_hotplug() for all hotplug events instead of installing notify handlers pointing to the same function for all hotplug devices. This change reduces both the size and complexity of ACPI-based device hotplug code. Moreover, since acpi_device_hotplug() only does significant things for devices that have either an ACPI scan handler, or a hotplug context with .eject() defined, and those devices had notify handlers pointing to acpi_hotplug_notify_cb() installed before anyway, this modification shouldn't change functionality. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/bus.c | 61 +++++++++++++++++----------- drivers/acpi/internal.h | 1 + drivers/acpi/scan.c | 81 +++----------------------------------- drivers/pci/hotplug/acpiphp.h | 1 - drivers/pci/hotplug/acpiphp_glue.c | 24 +++++------ include/acpi/acpi_bus.h | 2 - 6 files changed, 57 insertions(+), 113 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index c3237774632f..e61e7b8a2eaf 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -340,62 +340,77 @@ static void acpi_bus_osc_support(void) */ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { - struct acpi_device *device; + struct acpi_device *adev; struct acpi_driver *driver; - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", - type, handle)); + acpi_status status; + u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; switch (type) { - case ACPI_NOTIFY_BUS_CHECK: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); break; case ACPI_NOTIFY_DEVICE_CHECK: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); break; case ACPI_NOTIFY_DEVICE_WAKE: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n"); break; case ACPI_NOTIFY_EJECT_REQUEST: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); break; case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n"); /* TBD: Exactly what does 'light' mean? */ break; case ACPI_NOTIFY_FREQUENCY_MISMATCH: - /* TBD */ + acpi_handle_err(handle, "Device cannot be configured due " + "to a frequency mismatch\n"); break; case ACPI_NOTIFY_BUS_MODE_MISMATCH: - /* TBD */ + acpi_handle_err(handle, "Device cannot be configured due " + "to a bus mode mismatch\n"); break; case ACPI_NOTIFY_POWER_FAULT: - /* TBD */ + acpi_handle_err(handle, "Device has suffered a power fault\n"); break; default: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received unknown/unsupported notification [%08x]\n", - type)); - break; + acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type); + ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY; + goto err; } - device = acpi_bus_get_acpi_device(handle); - if (device) { - driver = device->driver; - if (driver && driver->ops.notify && - (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) - driver->ops.notify(device, type); + adev = acpi_bus_get_acpi_device(handle); + if (!adev) + goto err; - acpi_bus_put_acpi_device(device); + driver = adev->driver; + if (driver && driver->ops.notify && + (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) + driver->ops.notify(adev, type); + + switch (type) { + case ACPI_NOTIFY_BUS_CHECK: + case ACPI_NOTIFY_DEVICE_CHECK: + case ACPI_NOTIFY_EJECT_REQUEST: + status = acpi_hotplug_execute(acpi_device_hotplug, adev, type); + if (ACPI_SUCCESS(status)) + return; + default: + break; } + acpi_bus_put_acpi_device(adev); + return; + + err: + acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); } /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index dedbb2d802f1..143d5df5ec32 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -73,6 +73,7 @@ static inline void acpi_lpss_init(void) {} #endif bool acpi_queue_hotplug_work(struct work_struct *work); +void acpi_device_hotplug(void *data, u32 src); bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 59f9e272562e..8bb48bfab1df 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -470,7 +470,7 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) return -EINVAL; } -static void acpi_device_hotplug(void *data, u32 src) +void acpi_device_hotplug(void *data, u32 src) { u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; struct acpi_device *adev = data; @@ -520,75 +520,6 @@ static void acpi_device_hotplug(void *data, u32 src) unlock_device_hotplug(); } -static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) -{ - u32 ost_code = ACPI_OST_SC_SUCCESS; - struct acpi_device *adev; - acpi_status status; - - switch (type) { - case ACPI_NOTIFY_BUS_CHECK: - acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); - break; - - case ACPI_NOTIFY_DEVICE_CHECK: - acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); - break; - - case ACPI_NOTIFY_EJECT_REQUEST: - acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); - break; - - case ACPI_NOTIFY_DEVICE_WAKE: - return; - - case ACPI_NOTIFY_FREQUENCY_MISMATCH: - acpi_handle_err(handle, "Device cannot be configured due " - "to a frequency mismatch\n"); - goto out; - - case ACPI_NOTIFY_BUS_MODE_MISMATCH: - acpi_handle_err(handle, "Device cannot be configured due " - "to a bus mode mismatch\n"); - goto out; - - case ACPI_NOTIFY_POWER_FAULT: - acpi_handle_err(handle, "Device has suffered a power fault\n"); - goto out; - - default: - acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type); - ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY; - goto out; - } - - ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; - adev = acpi_bus_get_acpi_device(handle); - if (!adev) - goto out; - - status = acpi_hotplug_execute(acpi_device_hotplug, adev, type); - if (ACPI_SUCCESS(status)) - return; - - acpi_bus_put_acpi_device(adev); - - out: - acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); -} - -void acpi_install_hotplug_notify_handler(acpi_handle handle) -{ - acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - acpi_hotplug_notify_cb, NULL); -} - -void acpi_remove_hotplug_notify_handler(acpi_handle handle) -{ - acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - acpi_hotplug_notify_cb); -} - static ssize_t real_power_state_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -2037,12 +1968,10 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev) struct acpi_scan_handler *handler; handler = acpi_scan_match_handler(hwid->id, NULL); - if (!handler) - continue; - - acpi_install_hotplug_notify_handler(adev->handle); - adev->flags.hotplug_notify = true; - break; + if (handler) { + adev->flags.hotplug_notify = true; + break; + } } } diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index d7c1fc9712ad..2b859249303b 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -167,7 +167,6 @@ struct acpiphp_attention_info #define FUNC_HAS_STA (0x00000001) #define FUNC_HAS_EJ0 (0x00000002) -#define FUNC_HAS_DCK (0x00000004) /* function prototypes */ diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f3c49c442d93..b7342d2e819b 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -297,7 +297,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, newfunc = &context->func; newfunc->function = function; newfunc->parent = bridge; - acpi_unlock_hp_context(); if (acpi_has_method(handle, "_EJ0")) newfunc->flags = FUNC_HAS_EJ0; @@ -305,8 +304,14 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, if (acpi_has_method(handle, "_STA")) newfunc->flags |= FUNC_HAS_STA; + /* + * Dock stations' notify handler should be used for dock devices instead + * of the common one, so clear hp.event in their contexts. + */ if (acpi_has_method(handle, "_DCK")) - newfunc->flags |= FUNC_HAS_DCK; + context->hp.event = NULL; + + acpi_unlock_hp_context(); /* search for objects that share the same slot */ list_for_each_entry(slot, &bridge->slots, node) @@ -374,10 +379,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, pr_debug("failed to register dock device\n"); } - /* install notify handler */ - if (!(newfunc->flags & FUNC_HAS_DCK)) - acpi_install_hotplug_notify_handler(handle); - return AE_OK; } @@ -411,13 +412,14 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_for_each_entry(slot, &bridge->slots, node) { list_for_each_entry(func, &slot->funcs, sibling) { - acpi_handle handle = func_to_handle(func); + struct acpi_device *adev = func_to_acpi_device(func); - if (is_dock_device(handle)) - unregister_hotplug_dock_device(handle); + if (is_dock_device(adev->handle)) + unregister_hotplug_dock_device(adev->handle); - if (!(func->flags & FUNC_HAS_DCK)) - acpi_remove_hotplug_notify_handler(handle); + acpi_lock_hp_context(); + adev->hp->event = NULL; + acpi_unlock_hp_context(); } slot->flags |= SLOT_IS_GOING_AWAY; if (slot->slot) diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 907d5078f78a..32f90c7bcb03 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -446,8 +446,6 @@ static inline bool acpi_device_enumerated(struct acpi_device *adev) typedef void (*acpi_hp_callback)(void *data, u32 src); acpi_status acpi_hotplug_execute(acpi_hp_callback func, void *data, u32 src); -void acpi_install_hotplug_notify_handler(acpi_handle handle); -void acpi_remove_hotplug_notify_handler(acpi_handle handle); /** * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver -- cgit v1.2.3 From 1f7c164b6f2a8a028bfc36097fc42bf061c5212e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:45:13 +0100 Subject: ACPI / hotplug / PCI: Rework acpiphp_check_host_bridge() Since the only existing caller of acpiphp_check_host_bridge(), which is acpi_pci_root_scan_dependent(), already has a struct acpi_device pointer needed to obtain the ACPIPHP context, it doesn't make sense to execute acpi_bus_get_device() on its handle in acpiphp_handle_to_bridge() just in order to get that pointer back. For this reason, modify acpiphp_check_host_bridge() to take a struct acpi_device pointer as its argument and rearrange the code accordingly. Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/pci_root.c | 2 +- drivers/pci/hotplug/acpiphp_glue.c | 11 +++-------- include/linux/pci-acpi.h | 4 ++-- 3 files changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c1c4102e6478..c288ff3c6998 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -51,7 +51,7 @@ static void acpi_pci_root_remove(struct acpi_device *device); static int acpi_pci_root_scan_dependent(struct acpi_device *adev) { - acpiphp_check_host_bridge(adev->handle); + acpiphp_check_host_bridge(adev); return 0; } diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index b7342d2e819b..11a6117fb358 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -382,15 +382,11 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, return AE_OK; } -static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) +static struct acpiphp_bridge *acpiphp_dev_to_bridge(struct acpi_device *adev) { - struct acpi_device *adev = acpi_bus_get_acpi_device(handle); struct acpiphp_context *context; struct acpiphp_bridge *bridge = NULL; - if (!adev) - return NULL; - acpi_lock_hp_context(); context = acpiphp_get_context(adev); if (context) { @@ -401,7 +397,6 @@ static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle) acpiphp_put_context(context); } acpi_unlock_hp_context(); - acpi_bus_put_acpi_device(adev); return bridge; } @@ -768,11 +763,11 @@ static void acpiphp_sanitize_bus(struct pci_bus *bus) * ACPI event handlers */ -void acpiphp_check_host_bridge(acpi_handle handle) +void acpiphp_check_host_bridge(struct acpi_device *adev) { struct acpiphp_bridge *bridge; - bridge = acpiphp_handle_to_bridge(handle); + bridge = acpiphp_dev_to_bridge(adev); if (bridge) { pci_lock_rescan_remove(); diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 5a462c4e5009..637a608ded0b 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -59,12 +59,12 @@ static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } void acpiphp_init(void); void acpiphp_enumerate_slots(struct pci_bus *bus); void acpiphp_remove_slots(struct pci_bus *bus); -void acpiphp_check_host_bridge(acpi_handle handle); +void acpiphp_check_host_bridge(struct acpi_device *adev); #else static inline void acpiphp_init(void) { } static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } static inline void acpiphp_remove_slots(struct pci_bus *bus) { } -static inline void acpiphp_check_host_bridge(acpi_handle handle) { } +static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } #endif #else /* CONFIG_ACPI */ -- cgit v1.2.3 From 21369c77477a7f937174833c8094154f0f995710 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 10 Feb 2014 13:36:26 +0100 Subject: ACPI / hotplug / PCI: Execute _EJ0 under the ACPI scan lock Since acpi_device_hotplug() assumes that ACPI handles of device objects passed to it will not become invalid while acpi_scan_lock is being held, make acpiphp_disable_slot() acquire acpi_scan_lock, because it generally causes _EJ0 to be executed for one of the devices in the slot and that may cause its ACPI handle to become invalid. Signed-off-by: Rafael J. Wysocki --- drivers/pci/hotplug/acpiphp_glue.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 11a6117fb358..fa8fe7441952 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1007,9 +1007,15 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot) { int ret; + /* + * Acquire acpi_scan_lock to ensure that the execution of _EJ0 in + * acpiphp_disable_and_eject_slot() will be synchronized properly. + */ + acpi_scan_lock_acquire(); pci_lock_rescan_remove(); ret = acpiphp_disable_and_eject_slot(slot); pci_unlock_rescan_remove(); + acpi_scan_lock_release(); return ret; } -- cgit v1.2.3 From c03775c0827f4d10fcb360c9b8af9a922aedaf4b Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:01 +0800 Subject: ACPICA: Improve support for 32/64 bit physical addresses in printf(). This change improves the support for physical addresses in printf debug statements and other output on both 32-bit and 64-bit hosts. It consistently outputs the appropriate number of bytes for each host. The %p specifier is unsatisfactory since it does not emit uniform output on all hosts/clib implementations (on some, leading zeros are not supported, leading to difficult-to-read output). Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acmacros.h | 14 +++++++++----- drivers/acpi/acpica/tbprint.c | 20 ++++++++++++-------- 2 files changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 2a86c65d873b..25467828e864 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -63,17 +63,21 @@ #define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (u64) (val)) /* - * printf() format helpers + * printf() format helpers. These macros are workarounds for the difficulties + * with emitting 64-bit integers and 64-bit pointers with the same code + * for both 32-bit and 64-bit hosts. */ - -/* Split 64-bit integer into two 32-bit values. Use with %8.8X%8.8X */ - #define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i) #if ACPI_MACHINE_WIDTH == 64 #define ACPI_FORMAT_NATIVE_UINT(i) ACPI_FORMAT_UINT64(i) +#define ACPI_FORMAT_TO_UINT(i) ACPI_FORMAT_UINT64(i) +#define ACPI_PRINTF_UINT "0x%8.8X%8.8X" + #else -#define ACPI_FORMAT_NATIVE_UINT(i) 0, (i) +#define ACPI_FORMAT_NATIVE_UINT(i) 0, (u32) (i) +#define ACPI_FORMAT_TO_UINT(i) (u32) (i) +#define ACPI_PRINTF_UINT "0x%8.8X" #endif /* diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c index 6866e767ba90..05ded33b48fd 100644 --- a/drivers/acpi/acpica/tbprint.c +++ b/drivers/acpi/acpica/tbprint.c @@ -128,15 +128,17 @@ acpi_tb_print_table_header(acpi_physical_address address, struct acpi_table_header local_header; /* - * The reason that the Address is cast to a void pointer is so that we - * can use %p which will work properly on both 32-bit and 64-bit hosts. + * The reason that we use ACPI_PRINTF_UINT and ACPI_FORMAT_TO_UINT is to + * support both 32-bit and 64-bit hosts/addresses in a consistent manner. + * The %p specifier does not emit uniform output on all hosts. On some, + * leading zeros are not supported. */ if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) { /* FACS only has signature and length fields */ - ACPI_INFO((AE_INFO, "%4.4s %p %06X", - header->signature, ACPI_CAST_PTR(void, address), + ACPI_INFO((AE_INFO, "%-4.4s " ACPI_PRINTF_UINT " %06X", + header->signature, ACPI_FORMAT_TO_UINT(address), header->length)); } else if (ACPI_VALIDATE_RSDP_SIG(header->signature)) { @@ -147,8 +149,9 @@ acpi_tb_print_table_header(acpi_physical_address address, header)->oem_id, ACPI_OEM_ID_SIZE); acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE); - ACPI_INFO((AE_INFO, "RSDP %p %06X (v%.2d %6.6s)", - ACPI_CAST_PTR(void, address), + ACPI_INFO((AE_INFO, + "RSDP " ACPI_PRINTF_UINT " %06X (v%.2d %-6.6s)", + ACPI_FORMAT_TO_UINT(address), (ACPI_CAST_PTR(struct acpi_table_rsdp, header)-> revision > 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp, @@ -162,8 +165,9 @@ acpi_tb_print_table_header(acpi_physical_address address, acpi_tb_cleanup_table_header(&local_header, header); ACPI_INFO((AE_INFO, - "%4.4s %p %06X (v%.2d %6.6s %8.8s %08X %4.4s %08X)", - local_header.signature, ACPI_CAST_PTR(void, address), + "%-4.4s " ACPI_PRINTF_UINT + " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)", + local_header.signature, ACPI_FORMAT_TO_UINT(address), local_header.length, local_header.revision, local_header.oem_id, local_header.oem_table_id, local_header.oem_revision, -- cgit v1.2.3 From 2e19f8d02ee7acd939d60a89905c6fbc27c7cfab Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:07 +0800 Subject: ACPICA: Deploy new 32/64 printf support for table override mechanism. Similar to the earlier tbprint.c change. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/tbinstal.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index 634357d51fe9..c1a8cf7ae0f9 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -292,10 +292,11 @@ struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header new_table = acpi_os_map_memory(new_address, new_table_length); if (!new_table) { ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, - "%4.4s %p Attempted physical table override failed", + "%4.4s " ACPI_PRINTF_UINT + " Attempted physical table override failed", table_header->signature, - ACPI_CAST_PTR(void, - table_desc->address))); + ACPI_FORMAT_TO_UINT(table_desc-> + address))); return (NULL); } @@ -308,11 +309,11 @@ struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header finish_override: - ACPI_INFO((AE_INFO, - "%4.4s %p %s table override, new table: %p", + ACPI_INFO((AE_INFO, "%4.4s " ACPI_PRINTF_UINT + " %s table override, new table: " ACPI_PRINTF_UINT, table_header->signature, - ACPI_CAST_PTR(void, table_desc->address), - override_type, new_table)); + ACPI_FORMAT_TO_UINT(table_desc->address), + override_type, ACPI_FORMAT_TO_UINT(new_table))); /* We can now unmap/delete the original table (if fully mapped) */ -- cgit v1.2.3 From d72c17a8674fc143e1c7781e55fa362626353167 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:12 +0800 Subject: ACPICA: Utilities: Load of local test tables is now optional. The utility has the capability to load some various tables to test features of ACPICA. However, there are enough of them that the output of the utility became confusing. With this change, only the required local tables are displayed (RSDP, XSDT, etc.) along with the actual tables loaded via the command line specification. This makes the default output simler and easier to understand. The -el command line option restores the original behavior for testing purposes. This patch doesn't affect kernel behavior as Linux doesn't use ACPICA allocation tracking implementation. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/uttrack.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c index c0027773cccb..4e367387feb3 100644 --- a/drivers/acpi/acpica/uttrack.c +++ b/drivers/acpi/acpica/uttrack.c @@ -276,7 +276,8 @@ acpi_ut_free_and_track(void *allocation, } acpi_os_free(debug_block); - ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p freed\n", allocation)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p freed (block %p)\n", + allocation, debug_block)); return_VOID; } -- cgit v1.2.3 From 9186fb5807aadd30861ce9106afca8123524398c Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:19 +0800 Subject: ACPICA: Improve parameter validation for acpi_install_gpe_block. Add the following checks: 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2) There is not already a gpe block attached to the device. Likewise, with acpi_remove_gpe_block, ensure that the incoming object is a device. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evxfgpe.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index 5713da77c665..b84f8e25717a 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -583,6 +583,18 @@ acpi_install_gpe_block(acpi_handle gpe_device, goto unlock_and_exit; } + /* Validate the parent device */ + + if (node->type != ACPI_TYPE_DEVICE) { + status = AE_TYPE; + goto unlock_and_exit; + } + + if (node->object) { + status = AE_ALREADY_EXISTS; + goto unlock_and_exit; + } + /* * For user-installed GPE Block Devices, the gpe_block_base_number * is always zero @@ -666,6 +678,13 @@ acpi_status acpi_remove_gpe_block(acpi_handle gpe_device) goto unlock_and_exit; } + /* Validate the parent device */ + + if (node->type != ACPI_TYPE_DEVICE) { + status = AE_TYPE; + goto unlock_and_exit; + } + /* Get the device_object attached to the node */ obj_desc = acpi_ns_get_attached_object(node); -- cgit v1.2.3 From fbb7a2dc2be493c87399550bdc2ddaa510cdf450 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:25 +0800 Subject: ACPICA: Update ACPICA copyrights to 2014. Update ACPICA copyrights to 2014. Includes all source headers and signons for the various tools. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/accommon.h | 2 +- drivers/acpi/acpica/acdebug.h | 2 +- drivers/acpi/acpica/acdispat.h | 2 +- drivers/acpi/acpica/acevents.h | 2 +- drivers/acpi/acpica/acglobal.h | 2 +- drivers/acpi/acpica/achware.h | 2 +- drivers/acpi/acpica/acinterp.h | 2 +- drivers/acpi/acpica/aclocal.h | 2 +- drivers/acpi/acpica/acmacros.h | 2 +- drivers/acpi/acpica/acnamesp.h | 2 +- drivers/acpi/acpica/acobject.h | 2 +- drivers/acpi/acpica/acopcode.h | 2 +- drivers/acpi/acpica/acparser.h | 2 +- drivers/acpi/acpica/acpredef.h | 2 +- drivers/acpi/acpica/acresrc.h | 2 +- drivers/acpi/acpica/acstruct.h | 2 +- drivers/acpi/acpica/actables.h | 2 +- drivers/acpi/acpica/acutils.h | 2 +- drivers/acpi/acpica/amlcode.h | 2 +- drivers/acpi/acpica/amlresrc.h | 2 +- drivers/acpi/acpica/dsargs.c | 2 +- drivers/acpi/acpica/dscontrol.c | 2 +- drivers/acpi/acpica/dsfield.c | 2 +- drivers/acpi/acpica/dsinit.c | 2 +- drivers/acpi/acpica/dsmethod.c | 2 +- drivers/acpi/acpica/dsmthdat.c | 2 +- drivers/acpi/acpica/dsobject.c | 2 +- drivers/acpi/acpica/dsopcode.c | 2 +- drivers/acpi/acpica/dsutils.c | 2 +- drivers/acpi/acpica/dswexec.c | 2 +- drivers/acpi/acpica/dswload.c | 2 +- drivers/acpi/acpica/dswload2.c | 2 +- drivers/acpi/acpica/dswscope.c | 2 +- drivers/acpi/acpica/dswstate.c | 2 +- drivers/acpi/acpica/evevent.c | 2 +- drivers/acpi/acpica/evglock.c | 2 +- drivers/acpi/acpica/evgpe.c | 2 +- drivers/acpi/acpica/evgpeblk.c | 2 +- drivers/acpi/acpica/evgpeinit.c | 2 +- drivers/acpi/acpica/evgpeutil.c | 2 +- drivers/acpi/acpica/evhandler.c | 2 +- drivers/acpi/acpica/evmisc.c | 2 +- drivers/acpi/acpica/evregion.c | 2 +- drivers/acpi/acpica/evrgnini.c | 2 +- drivers/acpi/acpica/evsci.c | 2 +- drivers/acpi/acpica/evxface.c | 2 +- drivers/acpi/acpica/evxfevnt.c | 2 +- drivers/acpi/acpica/evxfgpe.c | 2 +- drivers/acpi/acpica/evxfregn.c | 2 +- drivers/acpi/acpica/exconfig.c | 2 +- drivers/acpi/acpica/exconvrt.c | 2 +- drivers/acpi/acpica/excreate.c | 2 +- drivers/acpi/acpica/exdebug.c | 2 +- drivers/acpi/acpica/exdump.c | 2 +- drivers/acpi/acpica/exfield.c | 2 +- drivers/acpi/acpica/exfldio.c | 2 +- drivers/acpi/acpica/exmisc.c | 2 +- drivers/acpi/acpica/exmutex.c | 2 +- drivers/acpi/acpica/exnames.c | 2 +- drivers/acpi/acpica/exoparg1.c | 2 +- drivers/acpi/acpica/exoparg2.c | 2 +- drivers/acpi/acpica/exoparg3.c | 2 +- drivers/acpi/acpica/exoparg6.c | 2 +- drivers/acpi/acpica/exprep.c | 2 +- drivers/acpi/acpica/exregion.c | 2 +- drivers/acpi/acpica/exresnte.c | 2 +- drivers/acpi/acpica/exresolv.c | 2 +- drivers/acpi/acpica/exresop.c | 2 +- drivers/acpi/acpica/exstore.c | 2 +- drivers/acpi/acpica/exstoren.c | 2 +- drivers/acpi/acpica/exstorob.c | 2 +- drivers/acpi/acpica/exsystem.c | 2 +- drivers/acpi/acpica/exutils.c | 2 +- drivers/acpi/acpica/hwacpi.c | 2 +- drivers/acpi/acpica/hwesleep.c | 2 +- drivers/acpi/acpica/hwgpe.c | 2 +- drivers/acpi/acpica/hwpci.c | 2 +- drivers/acpi/acpica/hwregs.c | 2 +- drivers/acpi/acpica/hwsleep.c | 2 +- drivers/acpi/acpica/hwtimer.c | 2 +- drivers/acpi/acpica/hwvalid.c | 2 +- drivers/acpi/acpica/hwxface.c | 2 +- drivers/acpi/acpica/hwxfsleep.c | 2 +- drivers/acpi/acpica/nsaccess.c | 2 +- drivers/acpi/acpica/nsalloc.c | 2 +- drivers/acpi/acpica/nsarguments.c | 2 +- drivers/acpi/acpica/nsconvert.c | 2 +- drivers/acpi/acpica/nsdump.c | 2 +- drivers/acpi/acpica/nsdumpdv.c | 2 +- drivers/acpi/acpica/nseval.c | 2 +- drivers/acpi/acpica/nsinit.c | 2 +- drivers/acpi/acpica/nsload.c | 2 +- drivers/acpi/acpica/nsnames.c | 2 +- drivers/acpi/acpica/nsobject.c | 2 +- drivers/acpi/acpica/nsparse.c | 2 +- drivers/acpi/acpica/nspredef.c | 2 +- drivers/acpi/acpica/nsprepkg.c | 2 +- drivers/acpi/acpica/nsrepair.c | 2 +- drivers/acpi/acpica/nsrepair2.c | 2 +- drivers/acpi/acpica/nssearch.c | 2 +- drivers/acpi/acpica/nsutils.c | 2 +- drivers/acpi/acpica/nswalk.c | 2 +- drivers/acpi/acpica/nsxfeval.c | 2 +- drivers/acpi/acpica/nsxfname.c | 2 +- drivers/acpi/acpica/nsxfobj.c | 2 +- drivers/acpi/acpica/psargs.c | 2 +- drivers/acpi/acpica/psloop.c | 2 +- drivers/acpi/acpica/psobject.c | 2 +- drivers/acpi/acpica/psopcode.c | 2 +- drivers/acpi/acpica/psopinfo.c | 2 +- drivers/acpi/acpica/psparse.c | 2 +- drivers/acpi/acpica/psscope.c | 2 +- drivers/acpi/acpica/pstree.c | 2 +- drivers/acpi/acpica/psutils.c | 2 +- drivers/acpi/acpica/pswalk.c | 2 +- drivers/acpi/acpica/psxface.c | 2 +- drivers/acpi/acpica/rsaddr.c | 2 +- drivers/acpi/acpica/rscalc.c | 2 +- drivers/acpi/acpica/rscreate.c | 2 +- drivers/acpi/acpica/rsdump.c | 2 +- drivers/acpi/acpica/rsdumpinfo.c | 2 +- drivers/acpi/acpica/rsinfo.c | 2 +- drivers/acpi/acpica/rsio.c | 2 +- drivers/acpi/acpica/rsirq.c | 2 +- drivers/acpi/acpica/rslist.c | 2 +- drivers/acpi/acpica/rsmemory.c | 2 +- drivers/acpi/acpica/rsmisc.c | 2 +- drivers/acpi/acpica/rsserial.c | 2 +- drivers/acpi/acpica/rsutils.c | 2 +- drivers/acpi/acpica/rsxface.c | 2 +- drivers/acpi/acpica/tbfadt.c | 2 +- drivers/acpi/acpica/tbfind.c | 2 +- drivers/acpi/acpica/tbinstal.c | 2 +- drivers/acpi/acpica/tbprint.c | 2 +- drivers/acpi/acpica/tbutils.c | 2 +- drivers/acpi/acpica/tbxface.c | 2 +- drivers/acpi/acpica/tbxfload.c | 2 +- drivers/acpi/acpica/tbxfroot.c | 2 +- drivers/acpi/acpica/utaddress.c | 2 +- drivers/acpi/acpica/utalloc.c | 2 +- drivers/acpi/acpica/utbuffer.c | 2 +- drivers/acpi/acpica/utcache.c | 2 +- drivers/acpi/acpica/utcopy.c | 2 +- drivers/acpi/acpica/utdebug.c | 2 +- drivers/acpi/acpica/utdecode.c | 2 +- drivers/acpi/acpica/utdelete.c | 2 +- drivers/acpi/acpica/uterror.c | 2 +- drivers/acpi/acpica/uteval.c | 2 +- drivers/acpi/acpica/utexcep.c | 2 +- drivers/acpi/acpica/utglobal.c | 2 +- drivers/acpi/acpica/utids.c | 2 +- drivers/acpi/acpica/utinit.c | 2 +- drivers/acpi/acpica/utlock.c | 2 +- drivers/acpi/acpica/utmath.c | 2 +- drivers/acpi/acpica/utmisc.c | 2 +- drivers/acpi/acpica/utmutex.c | 2 +- drivers/acpi/acpica/utobject.c | 2 +- drivers/acpi/acpica/utosi.c | 2 +- drivers/acpi/acpica/utownerid.c | 2 +- drivers/acpi/acpica/utpredef.c | 2 +- drivers/acpi/acpica/utresrc.c | 2 +- drivers/acpi/acpica/utstate.c | 2 +- drivers/acpi/acpica/utstring.c | 2 +- drivers/acpi/acpica/uttrack.c | 2 +- drivers/acpi/acpica/utxface.c | 2 +- drivers/acpi/acpica/utxferror.c | 2 +- drivers/acpi/acpica/utxfinit.c | 2 +- drivers/acpi/acpica/utxfmutex.c | 2 +- include/acpi/acbuffer.h | 2 +- include/acpi/acconfig.h | 2 +- include/acpi/acexcep.h | 2 +- include/acpi/acnames.h | 2 +- include/acpi/acoutput.h | 2 +- include/acpi/acpi.h | 2 +- include/acpi/acpiosxf.h | 2 +- include/acpi/acpixf.h | 2 +- include/acpi/acrestyp.h | 2 +- include/acpi/actbl.h | 2 +- include/acpi/actbl1.h | 2 +- include/acpi/actbl2.h | 2 +- include/acpi/actbl3.h | 2 +- include/acpi/actypes.h | 2 +- include/acpi/platform/acenv.h | 2 +- include/acpi/platform/acgcc.h | 2 +- include/acpi/platform/aclinux.h | 2 +- 185 files changed, 185 insertions(+), 185 deletions(-) diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h index 8a6c4a0d22db..6f1c616910ac 100644 --- a/drivers/acpi/acpica/accommon.h +++ b/drivers/acpi/acpica/accommon.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index 2bf3ca2b8a7a..7db70aecfcb2 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h index 427db72a6302..5b472c43c31d 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 0fb0adf435d6..68ec61fff188 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 4ed1aa384df2..b88771b13779 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 6357e932bfd9..2ad2351a9833 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h index 8af8c9bdeb35..948a6800ab09 100644 --- a/drivers/acpi/acpica/acinterp.h +++ b/drivers/acpi/acpica/acinterp.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index d95ca5449ace..52a21dafb540 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 25467828e864..4bceb11c7380 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index e6138ac4a160..ee1c040f321c 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index cc7ab6dd724e..1a4d61805ebc 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h index 3fc9ca7e8aa3..dda0e6affcf1 100644 --- a/drivers/acpi/acpica/acopcode.h +++ b/drivers/acpi/acpica/acopcode.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h index aed319318835..6168b85463ed 100644 --- a/drivers/acpi/acpica/acparser.h +++ b/drivers/acpi/acpica/acparser.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index f600aded7261..9c73d6c5ead2 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h index ff97430455cb..4b008e8884a1 100644 --- a/drivers/acpi/acpica/acresrc.h +++ b/drivers/acpi/acpica/acresrc.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h index fc83c0a5ca70..5d2989a1b68c 100644 --- a/drivers/acpi/acpica/acstruct.h +++ b/drivers/acpi/acpica/acstruct.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index c54f42c64fe2..5fa4b2027697 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index be8180c17d7e..24735eb0459f 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index 48a3e331b72d..5908ccec6aea 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -7,7 +7,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h index 87c26366d1df..f3f834408441 100644 --- a/drivers/acpi/acpica/amlresrc.h +++ b/drivers/acpi/acpica/amlresrc.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c index afdc6df17abf..720b1cdda711 100644 --- a/drivers/acpi/acpica/dsargs.c +++ b/drivers/acpi/acpica/dsargs.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c index eb56b66444b5..8daf9de82b73 100644 --- a/drivers/acpi/acpica/dscontrol.c +++ b/drivers/acpi/acpica/dscontrol.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c index e7a57c554e84..3661c8e90540 100644 --- a/drivers/acpi/acpica/dsfield.c +++ b/drivers/acpi/acpica/dsfield.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c index 14424200d246..96644d5ac0e1 100644 --- a/drivers/acpi/acpica/dsinit.c +++ b/drivers/acpi/acpica/dsinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c index 81a78ba84311..2c6d42c2bc01 100644 --- a/drivers/acpi/acpica/dsmethod.c +++ b/drivers/acpi/acpica/dsmethod.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c index c4b0b3657237..b67522df01ac 100644 --- a/drivers/acpi/acpica/dsmthdat.c +++ b/drivers/acpi/acpica/dsmthdat.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index b1746a68dad1..a1e7e6b6fcf7 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c index 5205edcf2c01..6c0759c0db47 100644 --- a/drivers/acpi/acpica/dsopcode.c +++ b/drivers/acpi/acpica/dsopcode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c index d7f53fb2979a..9f74795e2268 100644 --- a/drivers/acpi/acpica/dsutils.c +++ b/drivers/acpi/acpica/dsutils.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c index 1bbb22fd6fa0..f7f5107e754d 100644 --- a/drivers/acpi/acpica/dswexec.c +++ b/drivers/acpi/acpica/dswexec.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c index 2dbe109727c8..bd7811c64169 100644 --- a/drivers/acpi/acpica/dswload.c +++ b/drivers/acpi/acpica/dswload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c index 7f569d573027..2ac28d297305 100644 --- a/drivers/acpi/acpica/dswload2.c +++ b/drivers/acpi/acpica/dswload2.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswscope.c b/drivers/acpi/acpica/dswscope.c index d67891de1b54..9d6e2c1de1f8 100644 --- a/drivers/acpi/acpica/dswscope.c +++ b/drivers/acpi/acpica/dswscope.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c index ecb12e2137ff..24f7d5ea678a 100644 --- a/drivers/acpi/acpica/dswstate.c +++ b/drivers/acpi/acpica/dswstate.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c index 83cd45f4a870..c7bffff9ed32 100644 --- a/drivers/acpi/acpica/evevent.c +++ b/drivers/acpi/acpica/evevent.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c index 4c67193a9fa7..3393a73ca0d6 100644 --- a/drivers/acpi/acpica/evglock.c +++ b/drivers/acpi/acpica/evglock.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index a9cb4a1a4bb8..955f83da68a5 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index a31e549e64cc..caaed3c673fd 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c index a3e2f38aadf6..ae779c1e871d 100644 --- a/drivers/acpi/acpica/evgpeinit.c +++ b/drivers/acpi/acpica/evgpeinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c index 4d764e847a08..17e4bbfdb096 100644 --- a/drivers/acpi/acpica/evgpeutil.c +++ b/drivers/acpi/acpica/evgpeutil.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c index e3157313eb27..78ac29351c9e 100644 --- a/drivers/acpi/acpica/evhandler.c +++ b/drivers/acpi/acpica/evhandler.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index a5687540e9a6..5d594eb2e5ec 100644 --- a/drivers/acpi/acpica/evmisc.c +++ b/drivers/acpi/acpica/evmisc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 144cbb9b73bc..e31049b3e9d4 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c index 8354c4f7f10c..1b148a440d67 100644 --- a/drivers/acpi/acpica/evrgnini.c +++ b/drivers/acpi/acpica/evrgnini.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c index 9e9e3454d893..4d8a709c1fc4 100644 --- a/drivers/acpi/acpica/evsci.c +++ b/drivers/acpi/acpica/evsci.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 23a7fadca412..a734b27da061 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index 39d06af5e347..e286640ad4ff 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index b84f8e25717a..20a1392ffe06 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c index 02ed75ac56cd..2d6f187939c7 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c index 06d216c8d43a..8ba1464efd11 100644 --- a/drivers/acpi/acpica/exconfig.c +++ b/drivers/acpi/acpica/exconfig.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c index 69e4a8cc9b71..c545386fee96 100644 --- a/drivers/acpi/acpica/exconvrt.c +++ b/drivers/acpi/acpica/exconvrt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index 3c2e6dcdad3e..95d23dabcfbb 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c index 81c72a4ecd82..4cfc3d3b5c97 100644 --- a/drivers/acpi/acpica/exdebug.c +++ b/drivers/acpi/acpica/exdebug.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c index 4d046faac48c..c3e419c23d17 100644 --- a/drivers/acpi/acpica/exdump.c +++ b/drivers/acpi/acpica/exdump.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c index cfd875243421..68d97441432c 100644 --- a/drivers/acpi/acpica/exfield.c +++ b/drivers/acpi/acpica/exfield.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c index 49fb742d61b9..1d1b27a96c5b 100644 --- a/drivers/acpi/acpica/exfldio.c +++ b/drivers/acpi/acpica/exfldio.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c index 65d93607f368..2207e624f538 100644 --- a/drivers/acpi/acpica/exmisc.c +++ b/drivers/acpi/acpica/exmisc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c index 7be0205ad067..b49ea2a95f4f 100644 --- a/drivers/acpi/acpica/exmutex.c +++ b/drivers/acpi/acpica/exmutex.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c index 14689dec4960..dbb03b544e8c 100644 --- a/drivers/acpi/acpica/exnames.c +++ b/drivers/acpi/acpica/exnames.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c index d74cea416ca0..1b8e94104407 100644 --- a/drivers/acpi/acpica/exoparg1.c +++ b/drivers/acpi/acpica/exoparg1.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c index d6fa0fce1fc9..2ede656ee26a 100644 --- a/drivers/acpi/acpica/exoparg2.c +++ b/drivers/acpi/acpica/exoparg2.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg3.c b/drivers/acpi/acpica/exoparg3.c index bc042adf8804..363767cf01e5 100644 --- a/drivers/acpi/acpica/exoparg3.c +++ b/drivers/acpi/acpica/exoparg3.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c index 4459e32c683d..29e9e99f7fe3 100644 --- a/drivers/acpi/acpica/exoparg6.c +++ b/drivers/acpi/acpica/exoparg6.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index 5a588611ab48..ee3f872870bc 100644 --- a/drivers/acpi/acpica/exprep.c +++ b/drivers/acpi/acpica/exprep.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 9d28867e60dc..cd5288a257a9 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresnte.c b/drivers/acpi/acpica/exresnte.c index 7ca6925a87ca..ab060261b43e 100644 --- a/drivers/acpi/acpica/exresnte.c +++ b/drivers/acpi/acpica/exresnte.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c index 1606524312e3..3cde553bcbe1 100644 --- a/drivers/acpi/acpica/exresolv.c +++ b/drivers/acpi/acpica/exresolv.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c index be3f66973ee8..3af8de3fcea4 100644 --- a/drivers/acpi/acpica/exresop.c +++ b/drivers/acpi/acpica/exresop.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c index f0b09bf9887d..daf49f7ea311 100644 --- a/drivers/acpi/acpica/exstore.c +++ b/drivers/acpi/acpica/exstore.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c index 20d809d90c5b..04bd16c08f9e 100644 --- a/drivers/acpi/acpica/exstoren.c +++ b/drivers/acpi/acpica/exstoren.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c index 26e371073b1a..fd11018b0168 100644 --- a/drivers/acpi/acpica/exstorob.c +++ b/drivers/acpi/acpica/exstorob.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c index 6578dee2e51b..841caed11c08 100644 --- a/drivers/acpi/acpica/exsystem.c +++ b/drivers/acpi/acpica/exsystem.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c index 99dc7b287d55..5b16c5484bee 100644 --- a/drivers/acpi/acpica/exutils.c +++ b/drivers/acpi/acpica/exutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c index 3d36df828f52..1e66d960fc11 100644 --- a/drivers/acpi/acpica/hwacpi.c +++ b/drivers/acpi/acpica/hwacpi.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c index 414076818d40..858fdd6be598 100644 --- a/drivers/acpi/acpica/hwesleep.c +++ b/drivers/acpi/acpica/hwesleep.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index 96540506058f..2e6caabba07a 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwpci.c b/drivers/acpi/acpica/hwpci.c index 0889a629505f..e701d8c33dbf 100644 --- a/drivers/acpi/acpica/hwpci.c +++ b/drivers/acpi/acpica/hwpci.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 12e6cff54f78..e0fd9b4978cd 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index e3828cc4361b..d590693eb54e 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c index 3c498dc1636e..76ab5c1a814e 100644 --- a/drivers/acpi/acpica/hwtimer.c +++ b/drivers/acpi/acpica/hwtimer.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c index eab70d58852a..6b919127cd9d 100644 --- a/drivers/acpi/acpica/hwvalid.c +++ b/drivers/acpi/acpica/hwvalid.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index b4b47db2dee2..96d007df65ec 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index 15dddc10fc9b..6921c7f3d208 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c index 14f65f6345b9..f1249e3463be 100644 --- a/drivers/acpi/acpica/nsaccess.c +++ b/drivers/acpi/acpica/nsaccess.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c index fd1ff54cda19..607eb9e5150d 100644 --- a/drivers/acpi/acpica/nsalloc.c +++ b/drivers/acpi/acpica/nsalloc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsarguments.c b/drivers/acpi/acpica/nsarguments.c index 74b24c82707e..80fcfc8c9c1b 100644 --- a/drivers/acpi/acpica/nsarguments.c +++ b/drivers/acpi/acpica/nsarguments.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsconvert.c b/drivers/acpi/acpica/nsconvert.c index acd2964c2690..b55642c4ee58 100644 --- a/drivers/acpi/acpica/nsconvert.c +++ b/drivers/acpi/acpica/nsconvert.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c index 48b9c6f12643..3d88ef4a3e0d 100644 --- a/drivers/acpi/acpica/nsdump.c +++ b/drivers/acpi/acpica/nsdump.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c index 283762511b73..42d37109aa5d 100644 --- a/drivers/acpi/acpica/nsdumpdv.c +++ b/drivers/acpi/acpica/nsdumpdv.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c index 963ceef063f8..e634a05974db 100644 --- a/drivers/acpi/acpica/nseval.c +++ b/drivers/acpi/acpica/nseval.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c index 3a0423af968c..5b74677bf74d 100644 --- a/drivers/acpi/acpica/nsinit.c +++ b/drivers/acpi/acpica/nsinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c index 89ec645e7730..7ae521ce8d3f 100644 --- a/drivers/acpi/acpica/nsload.c +++ b/drivers/acpi/acpica/nsload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c index 90a0380fb8a0..7eee0a6f02f6 100644 --- a/drivers/acpi/acpica/nsnames.c +++ b/drivers/acpi/acpica/nsnames.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c index 7a736f4d1fd8..32845b105053 100644 --- a/drivers/acpi/acpica/nsobject.c +++ b/drivers/acpi/acpica/nsobject.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c index 177857340271..e83cff31754b 100644 --- a/drivers/acpi/acpica/nsparse.c +++ b/drivers/acpi/acpica/nsparse.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index d2855d9857c4..392910ffbed9 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c index 3d5391f9bcb5..61faf77afc18 100644 --- a/drivers/acpi/acpica/nsprepkg.c +++ b/drivers/acpi/acpica/nsprepkg.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index a05afff50eb9..904f7c3e8a0d 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index 6a25d320b169..53b4b42a13f2 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c index 47420faef073..af1cc42a8aa1 100644 --- a/drivers/acpi/acpica/nssearch.c +++ b/drivers/acpi/acpica/nssearch.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c index 4a0665b6bcc1..4a5e3f5c0ff7 100644 --- a/drivers/acpi/acpica/nsutils.c +++ b/drivers/acpi/acpica/nsutils.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index e81f15ef659a..4758a1f2ce22 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index 1f0c28ba50df..c76956bb8c45 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c index 3a4bd3ff49a3..8c6c11ce9760 100644 --- a/drivers/acpi/acpica/nsxfname.c +++ b/drivers/acpi/acpica/nsxfname.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c index 0e6d79e462d4..dae9401be7a2 100644 --- a/drivers/acpi/acpica/nsxfobj.c +++ b/drivers/acpi/acpica/nsxfobj.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c index 91a5a69db80c..314d314340ae 100644 --- a/drivers/acpi/acpica/psargs.c +++ b/drivers/acpi/acpica/psargs.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c index 065b44ae538f..646d1a3f6e27 100644 --- a/drivers/acpi/acpica/psloop.c +++ b/drivers/acpi/acpica/psloop.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c index 95dc608a66a8..af1f46cd37a5 100644 --- a/drivers/acpi/acpica/psobject.c +++ b/drivers/acpi/acpica/psobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c index 1b659e59710a..1755d2ac5656 100644 --- a/drivers/acpi/acpica/psopcode.c +++ b/drivers/acpi/acpica/psopcode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psopinfo.c b/drivers/acpi/acpica/psopinfo.c index b0c9787dbe61..0d8d37ffd04d 100644 --- a/drivers/acpi/acpica/psopinfo.c +++ b/drivers/acpi/acpica/psopinfo.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c index 79d9a28dedef..6d27b597394e 100644 --- a/drivers/acpi/acpica/psparse.c +++ b/drivers/acpi/acpica/psparse.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psscope.c b/drivers/acpi/acpica/psscope.c index 6a4b6fb39f32..32d250feea21 100644 --- a/drivers/acpi/acpica/psscope.c +++ b/drivers/acpi/acpica/psscope.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c index 877dc0de8df3..0b64181e7720 100644 --- a/drivers/acpi/acpica/pstree.c +++ b/drivers/acpi/acpica/pstree.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c index 91fa73a6e55e..3cd48802eede 100644 --- a/drivers/acpi/acpica/psutils.c +++ b/drivers/acpi/acpica/psutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c index abd65624754f..9cb07e1e76d9 100644 --- a/drivers/acpi/acpica/pswalk.c +++ b/drivers/acpi/acpica/pswalk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c index fcb7a840e996..e135acaa5e1c 100644 --- a/drivers/acpi/acpica/psxface.c +++ b/drivers/acpi/acpica/psxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c index f3a9276ac665..916fd095ff34 100644 --- a/drivers/acpi/acpica/rsaddr.c +++ b/drivers/acpi/acpica/rsaddr.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c index b60c9cf82862..ae9a9cf0f50f 100644 --- a/drivers/acpi/acpica/rscalc.c +++ b/drivers/acpi/acpica/rscalc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c index 3a2ace93e62c..ca62804178bd 100644 --- a/drivers/acpi/acpica/rscreate.c +++ b/drivers/acpi/acpica/rscreate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c index 8a2d4986b0aa..7e840086afc7 100644 --- a/drivers/acpi/acpica/rsdump.c +++ b/drivers/acpi/acpica/rsdump.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsdumpinfo.c b/drivers/acpi/acpica/rsdumpinfo.c index 46192bd53653..60a852e800f6 100644 --- a/drivers/acpi/acpica/rsdumpinfo.c +++ b/drivers/acpi/acpica/rsdumpinfo.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c index 41fed78e0de6..d984d45dfbaf 100644 --- a/drivers/acpi/acpica/rsinfo.c +++ b/drivers/acpi/acpica/rsinfo.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsio.c b/drivers/acpi/acpica/rsio.c index ca183755a6f9..19d64873290a 100644 --- a/drivers/acpi/acpica/rsio.c +++ b/drivers/acpi/acpica/rsio.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsirq.c b/drivers/acpi/acpica/rsirq.c index 364decc1028a..3461f7db26df 100644 --- a/drivers/acpi/acpica/rsirq.c +++ b/drivers/acpi/acpica/rsirq.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c index 6053aa182093..77291293af64 100644 --- a/drivers/acpi/acpica/rslist.c +++ b/drivers/acpi/acpica/rslist.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsmemory.c b/drivers/acpi/acpica/rsmemory.c index ebc773a1b350..eab4483ff5f8 100644 --- a/drivers/acpi/acpica/rsmemory.c +++ b/drivers/acpi/acpica/rsmemory.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c index c99cec9cefde..41eea4bc089c 100644 --- a/drivers/acpi/acpica/rsmisc.c +++ b/drivers/acpi/acpica/rsmisc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsserial.c b/drivers/acpi/acpica/rsserial.c index fe49fc43e10f..9e8407223d95 100644 --- a/drivers/acpi/acpica/rsserial.c +++ b/drivers/acpi/acpica/rsserial.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c index 14a7982c9961..897a5ceb0420 100644 --- a/drivers/acpi/acpica/rsutils.c +++ b/drivers/acpi/acpica/rsutils.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c index 01e476988aae..877ab9202133 100644 --- a/drivers/acpi/acpica/rsxface.c +++ b/drivers/acpi/acpica/rsxface.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 8f89263ac47e..ec14588254d4 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c index e4f4f02d49e7..c12003947bd5 100644 --- a/drivers/acpi/acpica/tbfind.c +++ b/drivers/acpi/acpica/tbfind.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index c1a8cf7ae0f9..e3040947e9a0 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c index 05ded33b48fd..df3bb20ea325 100644 --- a/drivers/acpi/acpica/tbprint.c +++ b/drivers/acpi/acpica/tbprint.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index 6412d3c301cb..a4702eee91a8 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c index db826eaadd1c..a1593159d9ea 100644 --- a/drivers/acpi/acpica/tbxface.c +++ b/drivers/acpi/acpica/tbxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c index 60b5a871833c..0909420fc776 100644 --- a/drivers/acpi/acpica/tbxfload.c +++ b/drivers/acpi/acpica/tbxfload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index e4e1468877c3..65ab8fed3d5e 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c index 2c2b6ae5dfc4..a1acec9d2ef3 100644 --- a/drivers/acpi/acpica/utaddress.c +++ b/drivers/acpi/acpica/utaddress.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utalloc.c b/drivers/acpi/acpica/utalloc.c index 1851762fc5b5..efac83c606dc 100644 --- a/drivers/acpi/acpica/utalloc.c +++ b/drivers/acpi/acpica/utalloc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utbuffer.c b/drivers/acpi/acpica/utbuffer.c index 11fde93be120..3c1699740653 100644 --- a/drivers/acpi/acpica/utbuffer.c +++ b/drivers/acpi/acpica/utbuffer.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utcache.c b/drivers/acpi/acpica/utcache.c index cacd2fd9e665..78fde0aac487 100644 --- a/drivers/acpi/acpica/utcache.c +++ b/drivers/acpi/acpica/utcache.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c index edff4e653d9a..95e55f5bbabe 100644 --- a/drivers/acpi/acpica/utcopy.c +++ b/drivers/acpi/acpica/utcopy.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c index d971c8631263..21a20ac5b1e1 100644 --- a/drivers/acpi/acpica/utdebug.c +++ b/drivers/acpi/acpica/utdebug.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c index b3f31dd89a45..fbfa9eca011f 100644 --- a/drivers/acpi/acpica/utdecode.c +++ b/drivers/acpi/acpica/utdecode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c index c07d2227ea42..ed4cb8683310 100644 --- a/drivers/acpi/acpica/utdelete.c +++ b/drivers/acpi/acpica/utdelete.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uterror.c b/drivers/acpi/acpica/uterror.c index 154fdcaa5830..8e544d4688cd 100644 --- a/drivers/acpi/acpica/uterror.c +++ b/drivers/acpi/acpica/uterror.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c index 16fb90506db7..8fed1482d228 100644 --- a/drivers/acpi/acpica/uteval.c +++ b/drivers/acpi/acpica/uteval.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utexcep.c b/drivers/acpi/acpica/utexcep.c index 3cf7b597edb9..0403dcaabaf2 100644 --- a/drivers/acpi/acpica/utexcep.c +++ b/drivers/acpi/acpica/utexcep.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 030cb0dc673c..21785da2318e 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c index bfca7b4b6731..4b12880e5b11 100644 --- a/drivers/acpi/acpica/utids.c +++ b/drivers/acpi/acpica/utids.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c index c5d1ac44c07d..5f56fc49021e 100644 --- a/drivers/acpi/acpica/utinit.c +++ b/drivers/acpi/acpica/utinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utlock.c b/drivers/acpi/acpica/utlock.c index 5c26ad420344..dc6e96547f18 100644 --- a/drivers/acpi/acpica/utlock.c +++ b/drivers/acpi/acpica/utlock.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmath.c b/drivers/acpi/acpica/utmath.c index 909fe66e1934..d44dee6ee10a 100644 --- a/drivers/acpi/acpica/utmath.c +++ b/drivers/acpi/acpica/utmath.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c index 02f9101b65e4..2e2bb14e1099 100644 --- a/drivers/acpi/acpica/utmisc.c +++ b/drivers/acpi/acpica/utmisc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index 08c323245584..82717fff9ffc 100644 --- a/drivers/acpi/acpica/utmutex.c +++ b/drivers/acpi/acpica/utmutex.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c index 517af700399d..dfa9009bfc87 100644 --- a/drivers/acpi/acpica/utobject.c +++ b/drivers/acpi/acpica/utobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c index 8856bd37bc76..e210e51a12f3 100644 --- a/drivers/acpi/acpica/utosi.c +++ b/drivers/acpi/acpica/utosi.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utownerid.c b/drivers/acpi/acpica/utownerid.c index eb3aca761369..36bec57ebd23 100644 --- a/drivers/acpi/acpica/utownerid.c +++ b/drivers/acpi/acpica/utownerid.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c index 2b1ce4cd3207..db30caff130a 100644 --- a/drivers/acpi/acpica/utpredef.c +++ b/drivers/acpi/acpica/utpredef.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c index 2c2accb9e534..e71a4d808874 100644 --- a/drivers/acpi/acpica/utresrc.c +++ b/drivers/acpi/acpica/utresrc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utstate.c b/drivers/acpi/acpica/utstate.c index 03c4c2febd84..1cc97a752c15 100644 --- a/drivers/acpi/acpica/utstate.c +++ b/drivers/acpi/acpica/utstate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c index 45c0eb26b33d..77219336c7e0 100644 --- a/drivers/acpi/acpica/utstring.c +++ b/drivers/acpi/acpica/utstring.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c index 4e367387feb3..7d0ee969d781 100644 --- a/drivers/acpi/acpica/uttrack.c +++ b/drivers/acpi/acpica/uttrack.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c index be322c83643a..502a8492dc83 100644 --- a/drivers/acpi/acpica/utxface.c +++ b/drivers/acpi/acpica/utxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxferror.c b/drivers/acpi/acpica/utxferror.c index f7edb88f6054..edd861102f1b 100644 --- a/drivers/acpi/acpica/utxferror.c +++ b/drivers/acpi/acpica/utxferror.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c index 246ef68681f4..13380d818462 100644 --- a/drivers/acpi/acpica/utxfinit.c +++ b/drivers/acpi/acpica/utxfinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxfmutex.c b/drivers/acpi/acpica/utxfmutex.c index 312299721ba1..2a0f9e04d3a4 100644 --- a/drivers/acpi/acpica/utxfmutex.c +++ b/drivers/acpi/acpica/utxfmutex.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acbuffer.h b/include/acpi/acbuffer.h index c927a0b1de78..88cb477524a6 100644 --- a/include/acpi/acbuffer.h +++ b/include/acpi/acbuffer.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h index 3ea214cff349..932a60d6ed82 100644 --- a/include/acpi/acconfig.h +++ b/include/acpi/acconfig.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h index 4e280bd226dd..8b06e4c1dd5d 100644 --- a/include/acpi/acexcep.h +++ b/include/acpi/acexcep.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h index 1f36777e26fe..3dd6e838dc30 100644 --- a/include/acpi/acnames.h +++ b/include/acpi/acnames.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h index 4607b027a657..1baae6edda89 100644 --- a/include/acpi/acoutput.h +++ b/include/acpi/acoutput.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acpi.h b/include/acpi/acpi.h index 618787715d56..a544d3e4b1dc 100644 --- a/include/acpi/acpi.h +++ b/include/acpi/acpi.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h index 01e6c6d8b7e1..f6f5f8af2112 100644 --- a/include/acpi/acpiosxf.h +++ b/include/acpi/acpiosxf.h @@ -7,7 +7,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index fea6773f87fc..e98591cdac2a 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h index cbf4bf977f75..eb760ca0b2e0 100644 --- a/include/acpi/acrestyp.h +++ b/include/acpi/acrestyp.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index 325aeae1fa99..3b30e36b53b5 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index 4ec8c194bfe5..212c65de75df 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index 094a906a0e98..f3372441e3a5 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index 01c2a9013e40..c2295cc4a5c0 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 68a3ada689c9..0bdf5c7a739e 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h index b402eb67af83..e863dd5c4e04 100644 --- a/include/acpi/platform/acenv.h +++ b/include/acpi/platform/acenv.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/platform/acgcc.h b/include/acpi/platform/acgcc.h index e077ce6c38ca..a476b9118b49 100644 --- a/include/acpi/platform/acgcc.h +++ b/include/acpi/platform/acgcc.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 008aa287c7a9..587b1e27e6a3 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without -- cgit v1.2.3 From ab85e9285d3bd7b7587e0584016f80e88533c022 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:32 +0800 Subject: ACPICA: Correctly support references in the union acpi_object. This change fixes the support to allow references (namespace nodes) to be passed as arguments to control methods via the evaluate object interface. This is probably most useful for testing purposes, however. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/utcopy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c index 95e55f5bbabe..270c16464dd9 100644 --- a/drivers/acpi/acpica/utcopy.c +++ b/drivers/acpi/acpica/utcopy.c @@ -535,10 +535,10 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object, case ACPI_TYPE_LOCAL_REFERENCE: - /* TBD: should validate incoming handle */ + /* An incoming reference is defined to be a namespace node */ - internal_object->reference.class = ACPI_REFCLASS_NAME; - internal_object->reference.node = + internal_object->reference.class = ACPI_REFCLASS_REFOF; + internal_object->reference.object = external_object->reference.handle; break; -- cgit v1.2.3 From eb60c4d3a43c8ba9a55e6b2ac824472de50aed11 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:39 +0800 Subject: ACPICA: Debugger: Add new command to read/write/compare all namespace objects. This command "test objects" will exercise the entire namespace by writing new values to each data object, and ensuring that the write was successful. The original value is then restored and verified. This patch doesn't affect kernel behavior as the debugger is currently not shipped in the Linux source tree. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acdebug.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index 7db70aecfcb2..68a91eb0fa48 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -115,6 +115,8 @@ ACPI_HW_DEPENDENT_RETURN_VOID(void char *block_arg)) ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_db_generate_sci(void)) +void acpi_db_execute_test(char *type_arg); + /* * dbconvert - miscellaneous conversion routines */ -- cgit v1.2.3 From 3334861b1e9947631230b573eba27bcd778b93c8 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Sat, 8 Feb 2014 09:42:46 +0800 Subject: ACPICA: Update the conditions to enable the utility resource dump strings. This patch enables resource dump functions for debugging purpose where ACPI_DEBUG_OUTPUT is enabled. Such functions are useful for developers to track kernel issues when composing debugging patches. They will be optimized out during link stage for normal builds. This patch updates the compilation condition used for the resource dump related string tables to match the compilation environment used for rsdump.c and rsdumpinfo.c. This patch can help to improve the ACPICA release automation. Lv Zheng. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/Makefile | 4 ++-- drivers/acpi/acpica/acutils.h | 2 +- drivers/acpi/acpica/rsdump.c | 3 ++- drivers/acpi/acpica/rsdumpinfo.c | 2 +- drivers/acpi/acpica/rsinfo.c | 4 +--- drivers/acpi/acpica/utresrc.c | 3 ++- 6 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index 438304086ff1..b7ed86a20427 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -122,6 +122,8 @@ acpi-y += \ rsaddr.o \ rscalc.o \ rscreate.o \ + rsdump.o \ + rsdumpinfo.o \ rsinfo.o \ rsio.o \ rsirq.o \ @@ -132,8 +134,6 @@ acpi-y += \ rsutils.o \ rsxface.o -acpi-$(ACPI_FUTURE_USAGE) += rsdump.o rsdumpinfo.o - acpi-y += \ tbfadt.o \ tbfind.o \ diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index 24735eb0459f..ceeec0b7ccb1 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -49,7 +49,7 @@ extern const u8 acpi_gbl_resource_aml_serial_bus_sizes[]; /* Strings used by the disassembler and debugger resource dump routines */ -#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER) +#if defined(ACPI_DEBUG_OUTPUT) || defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER) extern const char *acpi_gbl_bm_decode[]; extern const char *acpi_gbl_config_decode[]; diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c index 7e840086afc7..524c5a5300b8 100644 --- a/drivers/acpi/acpica/rsdump.c +++ b/drivers/acpi/acpica/rsdump.c @@ -47,7 +47,8 @@ #define _COMPONENT ACPI_RESOURCES ACPI_MODULE_NAME("rsdump") -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) + +#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBER) || defined(ACPI_DEBUGGER) /* Local prototypes */ static void acpi_rs_out_string(char *title, char *value); diff --git a/drivers/acpi/acpica/rsdumpinfo.c b/drivers/acpi/acpica/rsdumpinfo.c index 60a852e800f6..2f9332d5c973 100644 --- a/drivers/acpi/acpica/rsdumpinfo.c +++ b/drivers/acpi/acpica/rsdumpinfo.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_RESOURCES ACPI_MODULE_NAME("rsdumpinfo") -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) +#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUGGER) #define ACPI_RSD_OFFSET(f) (u8) ACPI_OFFSET (union acpi_resource_data,f) #define ACPI_PRT_OFFSET(f) (u8) ACPI_OFFSET (struct acpi_pci_routing_table,f) #define ACPI_RSD_TABLE_SIZE(name) (sizeof(name) / sizeof (struct acpi_rsdump_info)) diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c index d984d45dfbaf..9d3f8a9a24bd 100644 --- a/drivers/acpi/acpica/rsinfo.c +++ b/drivers/acpi/acpica/rsinfo.c @@ -132,8 +132,7 @@ struct acpi_rsconvert_info *acpi_gbl_convert_resource_serial_bus_dispatch[] = { acpi_rs_convert_uart_serial_bus, }; -#ifdef ACPI_FUTURE_USAGE -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) +#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUGGER) /* Dispatch table for resource dump functions */ @@ -168,7 +167,6 @@ struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[] = { }; #endif -#endif /* ACPI_FUTURE_USAGE */ /* * Base sizes for external AML resource descriptors, indexed by internal type. * Includes size of the descriptor header (1 byte for small descriptors, diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c index e71a4d808874..14cb6c0c8be2 100644 --- a/drivers/acpi/acpica/utresrc.c +++ b/drivers/acpi/acpica/utresrc.c @@ -47,7 +47,8 @@ #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utresrc") -#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER) + +#if defined(ACPI_DEBUG_OUTPUT) || defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER) /* * Strings used to decode resource descriptors. * Used by both the disassembler and the debugger resource dump routines -- cgit v1.2.3 From 9036f600fbdfdc71a37adf88cd83f9383f8c929d Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Sat, 8 Feb 2014 09:42:53 +0800 Subject: ACPICA: Add support for extra, optional OS-specific header file. If OSPMs have something should appear after actypes.h to reference type definitions, the platform/acxxx.h is not sufficient as it is included by platform/acenv.h before including actypes.h. This patch introduces an OSPMs declarable headers to allow OSPMs to handle such requirement for their own purposes. This kind of header can also be used by Linux to collect the divergences that haven't been back ported yet. Lv Zheng. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- include/acpi/acpi.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/acpi/acpi.h b/include/acpi/acpi.h index a544d3e4b1dc..ca0cb603b171 100644 --- a/include/acpi/acpi.h +++ b/include/acpi/acpi.h @@ -62,5 +62,8 @@ #include /* Resource Descriptor structs */ #include /* OSL interfaces (ACPICA-to-OS) */ #include /* ACPI core subsystem external interfaces */ +#ifdef ACPI_NATIVE_INTERFACE_HEADER +#include ACPI_NATIVE_INTERFACE_HEADER +#endif #endif /* __ACPI_H__ */ -- cgit v1.2.3 From 2447a5a8ea1c31b036ac482868cb16448d12c59a Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Sat, 8 Feb 2014 09:42:59 +0800 Subject: ACPICA: Update version to 20140114. Version 20140114. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index e98591cdac2a..51cdf1bbb862 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -46,7 +46,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20131218 +#define ACPI_CA_VERSION 0x20140114 #include #include -- cgit v1.2.3 From b02f6695f7601c4f8442b9cf4636802e7fa8d550 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:35:23 +0100 Subject: PM / QoS: Rename device resume latency QoS items Rename symbols, variables, functions and structure fields related do the resume latency device PM QoS type so that it is clear where they belong (in particular, to avoid confusion with the latency tolerance device PM QoS type introduced by a subsequent changeset). Update the PM QoS documentation to better reflect its current state. Signed-off-by: Rafael J. Wysocki --- Documentation/power/pm_qos_interface.txt | 37 ++++++++++----------- Documentation/trace/events-power.txt | 2 +- drivers/base/power/power.h | 4 +-- drivers/base/power/qos.c | 55 ++++++++++++++++---------------- drivers/base/power/sysfs.c | 32 ++++++++++--------- drivers/mtd/nand/sh_flctl.c | 2 +- include/linux/pm_qos.h | 14 ++++---- include/trace/events/power.h | 4 +-- 8 files changed, 73 insertions(+), 77 deletions(-) diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index 483632087788..22cb8f51182a 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -89,16 +89,16 @@ node. 2. PM QoS per-device latency and flags framework For each device, there are two lists of PM QoS requests. One is maintained -along with the aggregated target of latency value and the other is for PM QoS -flags. Values are updated in response to changes of the request list. +along with the aggregated target of resume latency value and the other is for +PM QoS flags. Values are updated in response to changes of the request list. -Target latency value is simply the minimum of the request values held in the -parameter list elements. The PM QoS flags aggregate value is a gather (bitwise -OR) of all list elements' values. Two device PM QoS flags are defined currently: -PM_QOS_FLAG_NO_POWER_OFF and PM_QOS_FLAG_REMOTE_WAKEUP. +Target resume latency value is simply the minimum of the request values held in +the parameter list elements. The PM QoS flags aggregate value is a gather +(bitwise OR) of all list elements' values. Two device PM QoS flags are defined +currently: PM_QOS_FLAG_NO_POWER_OFF and PM_QOS_FLAG_REMOTE_WAKEUP. -Note: the aggregated target value is implemented as an atomic variable so that -reading the aggregated value does not require any locking mechanism. +Note: the aggregated target value is implemented in such a way that reading the +aggregated value does not require any locking mechanism. From kernel mode the use of this interface is the following: @@ -137,14 +137,14 @@ Add a PM QoS request for the first direct ancestor of the given device whose power.ignore_children flag is unset. int dev_pm_qos_expose_latency_limit(device, value) -Add a request to the device's PM QoS list of latency constraints and create -a sysfs attribute pm_qos_resume_latency_us under the device's power directory -allowing user space to manipulate that request. +Add a request to the device's PM QoS list of resume latency constraints and +create a sysfs attribute pm_qos_resume_latency_us under the device's power +directory allowing user space to manipulate that request. void dev_pm_qos_hide_latency_limit(device) Drop the request added by dev_pm_qos_expose_latency_limit() from the device's -PM QoS list of latency constraints and remove sysfs attribute pm_qos_resume_latency_us -from the device's power directory. +PM QoS list of resume latency constraints and remove sysfs attribute +pm_qos_resume_latency_us from the device's power directory. int dev_pm_qos_expose_flags(device, value) Add a request to the device's PM QoS list of flags and create sysfs attributes @@ -163,7 +163,7 @@ a per-device notification tree and a global notification tree. int dev_pm_qos_add_notifier(device, notifier): Adds a notification callback function for the device. The callback is called when the aggregated value of the device constraints list -is changed. +is changed (for resume latency device PM QoS only). int dev_pm_qos_remove_notifier(device, notifier): Removes the notification callback function for the device. @@ -171,14 +171,9 @@ Removes the notification callback function for the device. int dev_pm_qos_add_global_notifier(notifier): Adds a notification callback function in the global notification tree of the framework. -The callback is called when the aggregated value for any device is changed. +The callback is called when the aggregated value for any device is changed +(for resume latency device PM QoS only). int dev_pm_qos_remove_global_notifier(notifier): Removes the notification callback function from the global notification tree of the framework. - - -From user mode: -No API for user space access to the per-device latency constraints is provided -yet - still under discussion. - diff --git a/Documentation/trace/events-power.txt b/Documentation/trace/events-power.txt index 3bd33b8dc7c4..21d514ced212 100644 --- a/Documentation/trace/events-power.txt +++ b/Documentation/trace/events-power.txt @@ -92,5 +92,5 @@ dev_pm_qos_remove_request "device=%s type=%s new_value=%d" The first parameter gives the device name which tries to add/update/remove QoS requests. -The second parameter gives the request type (e.g. "DEV_PM_QOS_LATENCY"). +The second parameter gives the request type (e.g. "DEV_PM_QOS_RESUME_LATENCY"). The third parameter is value to be added/updated/removed. diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index cfc3226ec492..a21223d95926 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -89,8 +89,8 @@ extern void dpm_sysfs_remove(struct device *dev); extern void rpm_sysfs_remove(struct device *dev); extern int wakeup_sysfs_add(struct device *dev); extern void wakeup_sysfs_remove(struct device *dev); -extern int pm_qos_sysfs_add_latency(struct device *dev); -extern void pm_qos_sysfs_remove_latency(struct device *dev); +extern int pm_qos_sysfs_add_resume_latency(struct device *dev); +extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); extern int pm_qos_sysfs_add_flags(struct device *dev); extern void pm_qos_sysfs_remove_flags(struct device *dev); diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 5c1361a9e5dd..67c0f4219b02 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -105,7 +105,7 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags); s32 __dev_pm_qos_read_value(struct device *dev) { return IS_ERR_OR_NULL(dev->power.qos) ? - 0 : pm_qos_read_value(&dev->power.qos->latency); + 0 : pm_qos_read_value(&dev->power.qos->resume_latency); } /** @@ -141,11 +141,11 @@ static int apply_constraint(struct dev_pm_qos_request *req, int ret; switch(req->type) { - case DEV_PM_QOS_LATENCY: - ret = pm_qos_update_target(&qos->latency, &req->data.pnode, - action, value); + case DEV_PM_QOS_RESUME_LATENCY: + ret = pm_qos_update_target(&qos->resume_latency, + &req->data.pnode, action, value); if (ret) { - value = pm_qos_read_value(&qos->latency); + value = pm_qos_read_value(&qos->resume_latency); blocking_notifier_call_chain(&dev_pm_notifiers, (unsigned long)value, req); @@ -186,10 +186,10 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) } BLOCKING_INIT_NOTIFIER_HEAD(n); - c = &qos->latency; + c = &qos->resume_latency; plist_head_init(&c->list); - c->target_value = PM_QOS_DEV_LAT_DEFAULT_VALUE; - c->default_value = PM_QOS_DEV_LAT_DEFAULT_VALUE; + c->target_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; + c->default_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; c->type = PM_QOS_MIN; c->notifiers = n; @@ -224,7 +224,7 @@ void dev_pm_qos_constraints_destroy(struct device *dev) * If the device's PM QoS resume latency limit or PM QoS flags have been * exposed to user space, they have to be hidden at this point. */ - pm_qos_sysfs_remove_latency(dev); + pm_qos_sysfs_remove_resume_latency(dev); pm_qos_sysfs_remove_flags(dev); mutex_lock(&dev_pm_qos_mtx); @@ -237,7 +237,7 @@ void dev_pm_qos_constraints_destroy(struct device *dev) goto out; /* Flush the constraints lists for the device. */ - c = &qos->latency; + c = &qos->resume_latency; plist_for_each_entry_safe(req, tmp, &c->list, data.pnode) { /* * Update constraints list and call the notification @@ -341,7 +341,7 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req, return -ENODEV; switch(req->type) { - case DEV_PM_QOS_LATENCY: + case DEV_PM_QOS_RESUME_LATENCY: curr_value = req->data.pnode.prio; break; case DEV_PM_QOS_FLAGS: @@ -460,8 +460,8 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier) ret = dev_pm_qos_constraints_allocate(dev); if (!ret) - ret = blocking_notifier_chain_register( - dev->power.qos->latency.notifiers, notifier); + ret = blocking_notifier_chain_register(dev->power.qos->resume_latency.notifiers, + notifier); mutex_unlock(&dev_pm_qos_mtx); return ret; @@ -487,9 +487,8 @@ int dev_pm_qos_remove_notifier(struct device *dev, /* Silently return if the constraints object is not present. */ if (!IS_ERR_OR_NULL(dev->power.qos)) - retval = blocking_notifier_chain_unregister( - dev->power.qos->latency.notifiers, - notifier); + retval = blocking_notifier_chain_unregister(dev->power.qos->resume_latency.notifiers, + notifier); mutex_unlock(&dev_pm_qos_mtx); return retval; @@ -543,7 +542,7 @@ int dev_pm_qos_add_ancestor_request(struct device *dev, if (ancestor) ret = dev_pm_qos_add_request(ancestor, req, - DEV_PM_QOS_LATENCY, value); + DEV_PM_QOS_RESUME_LATENCY, value); if (ret < 0) req->dev = NULL; @@ -559,9 +558,9 @@ static void __dev_pm_qos_drop_user_request(struct device *dev, struct dev_pm_qos_request *req = NULL; switch(type) { - case DEV_PM_QOS_LATENCY: - req = dev->power.qos->latency_req; - dev->power.qos->latency_req = NULL; + case DEV_PM_QOS_RESUME_LATENCY: + req = dev->power.qos->resume_latency_req; + dev->power.qos->resume_latency_req = NULL; break; case DEV_PM_QOS_FLAGS: req = dev->power.qos->flags_req; @@ -597,7 +596,7 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (!req) return -ENOMEM; - ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_LATENCY, value); + ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_RESUME_LATENCY, value); if (ret < 0) { kfree(req); return ret; @@ -609,7 +608,7 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (IS_ERR_OR_NULL(dev->power.qos)) ret = -ENODEV; - else if (dev->power.qos->latency_req) + else if (dev->power.qos->resume_latency_req) ret = -EEXIST; if (ret < 0) { @@ -618,13 +617,13 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->latency_req = req; + dev->power.qos->resume_latency_req = req; mutex_unlock(&dev_pm_qos_mtx); - ret = pm_qos_sysfs_add_latency(dev); + ret = pm_qos_sysfs_add_resume_latency(dev); if (ret) - dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_RESUME_LATENCY); out: mutex_unlock(&dev_pm_qos_sysfs_mtx); @@ -634,8 +633,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); static void __dev_pm_qos_hide_latency_limit(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->resume_latency_req) + __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_RESUME_LATENCY); } /** @@ -646,7 +645,7 @@ void dev_pm_qos_hide_latency_limit(struct device *dev) { mutex_lock(&dev_pm_qos_sysfs_mtx); - pm_qos_sysfs_remove_latency(dev); + pm_qos_sysfs_remove_resume_latency(dev); mutex_lock(&dev_pm_qos_mtx); __dev_pm_qos_hide_latency_limit(dev); diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 03e089ade5ce..4e24955aac8a 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -218,15 +218,16 @@ static ssize_t autosuspend_delay_ms_store(struct device *dev, static DEVICE_ATTR(autosuspend_delay_ms, 0644, autosuspend_delay_ms_show, autosuspend_delay_ms_store); -static ssize_t pm_qos_latency_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t pm_qos_resume_latency_show(struct device *dev, + struct device_attribute *attr, + char *buf) { - return sprintf(buf, "%d\n", dev_pm_qos_requested_latency(dev)); + return sprintf(buf, "%d\n", dev_pm_qos_requested_resume_latency(dev)); } -static ssize_t pm_qos_latency_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t n) +static ssize_t pm_qos_resume_latency_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t n) { s32 value; int ret; @@ -237,12 +238,13 @@ static ssize_t pm_qos_latency_store(struct device *dev, if (value < 0) return -EINVAL; - ret = dev_pm_qos_update_request(dev->power.qos->latency_req, value); + ret = dev_pm_qos_update_request(dev->power.qos->resume_latency_req, + value); return ret < 0 ? ret : n; } static DEVICE_ATTR(pm_qos_resume_latency_us, 0644, - pm_qos_latency_show, pm_qos_latency_store); + pm_qos_resume_latency_show, pm_qos_resume_latency_store); static ssize_t pm_qos_no_power_off_show(struct device *dev, struct device_attribute *attr, @@ -618,15 +620,15 @@ static struct attribute_group pm_runtime_attr_group = { .attrs = runtime_attrs, }; -static struct attribute *pm_qos_latency_attrs[] = { +static struct attribute *pm_qos_resume_latency_attrs[] = { #ifdef CONFIG_PM_RUNTIME &dev_attr_pm_qos_resume_latency_us.attr, #endif /* CONFIG_PM_RUNTIME */ NULL, }; -static struct attribute_group pm_qos_latency_attr_group = { +static struct attribute_group pm_qos_resume_latency_attr_group = { .name = power_group_name, - .attrs = pm_qos_latency_attrs, + .attrs = pm_qos_resume_latency_attrs, }; static struct attribute *pm_qos_flags_attrs[] = { @@ -681,14 +683,14 @@ void wakeup_sysfs_remove(struct device *dev) sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); } -int pm_qos_sysfs_add_latency(struct device *dev) +int pm_qos_sysfs_add_resume_latency(struct device *dev) { - return sysfs_merge_group(&dev->kobj, &pm_qos_latency_attr_group); + return sysfs_merge_group(&dev->kobj, &pm_qos_resume_latency_attr_group); } -void pm_qos_sysfs_remove_latency(struct device *dev) +void pm_qos_sysfs_remove_resume_latency(struct device *dev) { - sysfs_unmerge_group(&dev->kobj, &pm_qos_latency_attr_group); + sysfs_unmerge_group(&dev->kobj, &pm_qos_resume_latency_attr_group); } int pm_qos_sysfs_add_flags(struct device *dev) diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index d72783dd7b96..c0670237e7a2 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -897,7 +897,7 @@ static void flctl_select_chip(struct mtd_info *mtd, int chipnr) if (!flctl->qos_request) { ret = dev_pm_qos_add_request(&flctl->pdev->dev, &flctl->pm_qos, - DEV_PM_QOS_LATENCY, + DEV_PM_QOS_RESUME_LATENCY, 100); if (ret < 0) dev_err(&flctl->pdev->dev, diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 5a95013905c8..88a3680ae74c 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -32,7 +32,7 @@ enum pm_qos_flags_status { #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 -#define PM_QOS_DEV_LAT_DEFAULT_VALUE 0 +#define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE 0 #define PM_QOS_FLAG_NO_POWER_OFF (1 << 0) #define PM_QOS_FLAG_REMOTE_WAKEUP (1 << 1) @@ -49,7 +49,7 @@ struct pm_qos_flags_request { }; enum dev_pm_qos_req_type { - DEV_PM_QOS_LATENCY = 1, + DEV_PM_QOS_RESUME_LATENCY = 1, DEV_PM_QOS_FLAGS, }; @@ -87,9 +87,9 @@ struct pm_qos_flags { }; struct dev_pm_qos { - struct pm_qos_constraints latency; + struct pm_qos_constraints resume_latency; struct pm_qos_flags flags; - struct dev_pm_qos_request *latency_req; + struct dev_pm_qos_request *resume_latency_req; struct dev_pm_qos_request *flags_req; }; @@ -196,9 +196,9 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 value); void dev_pm_qos_hide_flags(struct device *dev); int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); -static inline s32 dev_pm_qos_requested_latency(struct device *dev) +static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { - return dev->power.qos->latency_req->data.pnode.prio; + return dev->power.qos->resume_latency_req->data.pnode.prio; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) @@ -215,7 +215,7 @@ static inline void dev_pm_qos_hide_flags(struct device *dev) {} static inline int dev_pm_qos_update_flags(struct device *dev, s32 m, bool set) { return 0; } -static inline s32 dev_pm_qos_requested_latency(struct device *dev) { return 0; } +static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { return 0; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; } #endif diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 9e9475c85de5..f6df9868ea0c 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -412,8 +412,8 @@ DECLARE_EVENT_CLASS(dev_pm_qos_request, TP_printk("device=%s type=%s new_value=%d", __get_str(name), __print_symbolic(__entry->type, - { DEV_PM_QOS_LATENCY, "DEV_PM_QOS_LATENCY" }, - { DEV_PM_QOS_FLAGS, "DEV_PM_QOS_FLAGS" }), + { DEV_PM_QOS_RESUME_LATENCY, "DEV_PM_QOS_RESUME_LATENCY" }, + { DEV_PM_QOS_FLAGS, "DEV_PM_QOS_FLAGS" }), __entry->new_value) ); -- cgit v1.2.3 From 327adaedf2218b0e318eb393aa79cf2be64c199f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:35:29 +0100 Subject: PM / QoS: Add no_constraints_value field to struct pm_qos_constraints Add a new field, no_constraints_value, to struct pm_qos_constraints representing a list of PM QoS constraint requests to be returned by pm_qos_get_value() when that list of requests is empty. That field will be equal to default_value for all of the existing global PM QoS classes and for the resume latency device PM QoS type, but it will be different from default_value for the new latency tolerance device PM QoS type introduced by the next changeset. Signed-off-by: Rafael J. Wysocki --- drivers/base/power/qos.c | 1 + include/linux/pm_qos.h | 1 + kernel/power/qos.c | 5 ++++- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 67c0f4219b02..c754e55f9dcb 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -190,6 +190,7 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) plist_head_init(&c->list); c->target_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; c->default_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; + c->no_constraint_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; c->type = PM_QOS_MIN; c->notifiers = n; diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 88a3680ae74c..2d8ce50877d8 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -77,6 +77,7 @@ struct pm_qos_constraints { struct plist_head list; s32 target_value; /* Do not change to 64 bit */ s32 default_value; + s32 no_constraint_value; enum pm_qos_type type; struct blocking_notifier_head *notifiers; }; diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 8dff9b48075a..e23ae38e647f 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -66,6 +66,7 @@ static struct pm_qos_constraints cpu_dma_constraints = { .list = PLIST_HEAD_INIT(cpu_dma_constraints.list), .target_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE, .default_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE, + .no_constraint_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE, .type = PM_QOS_MIN, .notifiers = &cpu_dma_lat_notifier, }; @@ -79,6 +80,7 @@ static struct pm_qos_constraints network_lat_constraints = { .list = PLIST_HEAD_INIT(network_lat_constraints.list), .target_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE, .default_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE, + .no_constraint_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE, .type = PM_QOS_MIN, .notifiers = &network_lat_notifier, }; @@ -93,6 +95,7 @@ static struct pm_qos_constraints network_tput_constraints = { .list = PLIST_HEAD_INIT(network_tput_constraints.list), .target_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE, .default_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE, + .no_constraint_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE, .type = PM_QOS_MAX, .notifiers = &network_throughput_notifier, }; @@ -128,7 +131,7 @@ static const struct file_operations pm_qos_power_fops = { static inline int pm_qos_get_value(struct pm_qos_constraints *c) { if (plist_head_empty(&c->list)) - return c->default_value; + return c->no_constraint_value; switch (c->type) { case PM_QOS_MIN: -- cgit v1.2.3 From 2d984ad132a87ca2112f81f21039493176a8bca0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:35:38 +0100 Subject: PM / QoS: Introcuce latency tolerance device PM QoS type Add a new latency tolerance device PM QoS type to be use for specifying active state (RPM_ACTIVE) memory access (DMA) latency tolerance requirements for devices. It may be used to prevent hardware from choosing overly aggressive energy-saving operation modes (causing too much latency to appear) for the whole platform. This feature reqiures hardware support, so it only will be available for devices having a new .set_latency_tolerance() callback in struct dev_pm_info populated, in which case the routine pointed to by it should implement whatever is necessary to transfer the effective requirement value to the hardware. Whenever the effective latency tolerance changes for the device, its .set_latency_tolerance() callback will be executed and the effective value will be passed to it. If that value is negative, which means that the list of latency tolerance requirements for the device is empty, the callback is expected to switch the underlying hardware latency tolerance control mechanism to an autonomous mode if available. If that value is PM_QOS_LATENCY_ANY, in turn, and the hardware supports a special "no requirement" setting, the callback is expected to use it. That allows software to prevent the hardware from automatically updating the device's latency tolerance in response to its power state changes (e.g. during transitions from D3cold to D0), which generally may be done in the autonomous latency tolerance control mode. If .set_latency_tolerance() is present for the device, a new pm_qos_latency_tolerance_us attribute will be present in the devivce's power directory in sysfs. Then, user space can use that attribute to specify its latency tolerance requirement for the device, if any. Writing "any" to it means "no requirement, but do not let the hardware control latency tolerance" and writing "auto" to it allows the hardware to be switched to the autonomous mode if there are no other requirements from the kernel side in the device's list. This changeset includes a fix from Mika Westerberg. Signed-off-by: Rafael J. Wysocki --- Documentation/ABI/testing/sysfs-devices-power | 27 ++++- Documentation/power/pm_qos_interface.txt | 59 +++++++++-- drivers/base/power/qos.c | 144 ++++++++++++++++++++++---- drivers/base/power/sysfs.c | 65 ++++++++++-- include/linux/pm.h | 1 + include/linux/pm_qos.h | 12 +++ kernel/power/qos.c | 13 ++- 7 files changed, 277 insertions(+), 44 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power index efe449bdf811..7dbf96b724ed 100644 --- a/Documentation/ABI/testing/sysfs-devices-power +++ b/Documentation/ABI/testing/sysfs-devices-power @@ -187,7 +187,7 @@ Description: Not all drivers support this attribute. If it isn't supported, attempts to read or write it will yield I/O errors. -What: /sys/devices/.../power/pm_qos_latency_us +What: /sys/devices/.../power/pm_qos_resume_latency_us Date: March 2012 Contact: Rafael J. Wysocki Description: @@ -205,6 +205,31 @@ Description: This attribute has no effect on system-wide suspend/resume and hibernation. +What: /sys/devices/.../power/pm_qos_latency_tolerance_us +Date: January 2014 +Contact: Rafael J. Wysocki +Description: + The /sys/devices/.../power/pm_qos_latency_tolerance_us attribute + contains the PM QoS active state latency tolerance limit for the + given device in microseconds. That is the maximum memory access + latency the device can suffer without any visible adverse + effects on user space functionality. If that value is the + string "any", the latency does not matter to user space at all, + but hardware should not be allowed to set the latency tolerance + for the device automatically. + + Reading "auto" from this file means that the maximum memory + access latency for the device may be determined automatically + by the hardware as needed. Writing "auto" to it allows the + hardware to be switched to this mode if there are no other + latency tolerance requirements from the kernel side. + + This attribute is only present if the feature controlled by it + is supported by the hardware. + + This attribute has no effect on runtime suspend and resume of + devices and on system-wide suspend/resume and hibernation. + What: /sys/devices/.../power/pm_qos_no_power_off Date: September 2012 Contact: Rafael J. Wysocki diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index 22cb8f51182a..ed743bbad87c 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -88,17 +88,19 @@ node. 2. PM QoS per-device latency and flags framework -For each device, there are two lists of PM QoS requests. One is maintained -along with the aggregated target of resume latency value and the other is for -PM QoS flags. Values are updated in response to changes of the request list. +For each device, there are three lists of PM QoS requests. Two of them are +maintained along with the aggregated targets of resume latency and active +state latency tolerance (in microseconds) and the third one is for PM QoS flags. +Values are updated in response to changes of the request list. -Target resume latency value is simply the minimum of the request values held in -the parameter list elements. The PM QoS flags aggregate value is a gather -(bitwise OR) of all list elements' values. Two device PM QoS flags are defined -currently: PM_QOS_FLAG_NO_POWER_OFF and PM_QOS_FLAG_REMOTE_WAKEUP. +The target values of resume latency and active state latency tolerance are +simply the minimum of the request values held in the parameter list elements. +The PM QoS flags aggregate value is a gather (bitwise OR) of all list elements' +values. Two device PM QoS flags are defined currently: PM_QOS_FLAG_NO_POWER_OFF +and PM_QOS_FLAG_REMOTE_WAKEUP. -Note: the aggregated target value is implemented in such a way that reading the -aggregated value does not require any locking mechanism. +Note: The aggregated target values are implemented in such a way that reading +the aggregated value does not require any locking mechanism. From kernel mode the use of this interface is the following: @@ -177,3 +179,42 @@ The callback is called when the aggregated value for any device is changed int dev_pm_qos_remove_global_notifier(notifier): Removes the notification callback function from the global notification tree of the framework. + + +Active state latency tolerance + +This device PM QoS type is used to support systems in which hardware may switch +to energy-saving operation modes on the fly. In those systems, if the operation +mode chosen by the hardware attempts to save energy in an overly aggressive way, +it may cause excess latencies to be visible to software, causing it to miss +certain protocol requirements or target frame or sample rates etc. + +If there is a latency tolerance control mechanism for a given device available +to software, the .set_latency_tolerance callback in that device's dev_pm_info +structure should be populated. The routine pointed to by it is should implement +whatever is necessary to transfer the effective requirement value to the +hardware. + +Whenever the effective latency tolerance changes for the device, its +.set_latency_tolerance() callback will be executed and the effective value will +be passed to it. If that value is negative, which means that the list of +latency tolerance requirements for the device is empty, the callback is expected +to switch the underlying hardware latency tolerance control mechanism to an +autonomous mode if available. If that value is PM_QOS_LATENCY_ANY, in turn, and +the hardware supports a special "no requirement" setting, the callback is +expected to use it. That allows software to prevent the hardware from +automatically updating the device's latency tolerance in response to its power +state changes (e.g. during transitions from D3cold to D0), which generally may +be done in the autonomous latency tolerance control mode. + +If .set_latency_tolerance() is present for the device, sysfs attribute +pm_qos_latency_tolerance_us will be present in the devivce's power directory. +Then, user space can use that attribute to specify its latency tolerance +requirement for the device, if any. Writing "any" to it means "no requirement, +but do not let the hardware control latency tolerance" and writing "auto" to it +allows the hardware to be switched to the autonomous mode if there are no other +requirements from the kernel side in the device's list. + +Kernel code can use the functions described above along with the +DEV_PM_QOS_LATENCY_TOLERANCE device PM QoS type to add, remove and update +latency tolerance requirements for devices. diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index c754e55f9dcb..84756f7f09d9 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -151,6 +151,14 @@ static int apply_constraint(struct dev_pm_qos_request *req, req); } break; + case DEV_PM_QOS_LATENCY_TOLERANCE: + ret = pm_qos_update_target(&qos->latency_tolerance, + &req->data.pnode, action, value); + if (ret) { + value = pm_qos_read_value(&qos->latency_tolerance); + req->dev->power.set_latency_tolerance(req->dev, value); + } + break; case DEV_PM_QOS_FLAGS: ret = pm_qos_update_flags(&qos->flags, &req->data.flr, action, value); @@ -194,6 +202,13 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) c->type = PM_QOS_MIN; c->notifiers = n; + c = &qos->latency_tolerance; + plist_head_init(&c->list); + c->target_value = PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE; + c->default_value = PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE; + c->no_constraint_value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT; + c->type = PM_QOS_MIN; + INIT_LIST_HEAD(&qos->flags.list); spin_lock_irq(&dev->power.lock); @@ -247,6 +262,11 @@ void dev_pm_qos_constraints_destroy(struct device *dev) apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE); memset(req, 0, sizeof(*req)); } + c = &qos->latency_tolerance; + plist_for_each_entry_safe(req, tmp, &c->list, data.pnode) { + apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE); + memset(req, 0, sizeof(*req)); + } f = &qos->flags; list_for_each_entry_safe(req, tmp, &f->list, data.flr.node) { apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE); @@ -266,6 +286,40 @@ void dev_pm_qos_constraints_destroy(struct device *dev) mutex_unlock(&dev_pm_qos_sysfs_mtx); } +static bool dev_pm_qos_invalid_request(struct device *dev, + struct dev_pm_qos_request *req) +{ + return !req || (req->type == DEV_PM_QOS_LATENCY_TOLERANCE + && !dev->power.set_latency_tolerance); +} + +static int __dev_pm_qos_add_request(struct device *dev, + struct dev_pm_qos_request *req, + enum dev_pm_qos_req_type type, s32 value) +{ + int ret = 0; + + if (!dev || dev_pm_qos_invalid_request(dev, req)) + return -EINVAL; + + if (WARN(dev_pm_qos_request_active(req), + "%s() called for already added request\n", __func__)) + return -EINVAL; + + if (IS_ERR(dev->power.qos)) + ret = -ENODEV; + else if (!dev->power.qos) + ret = dev_pm_qos_constraints_allocate(dev); + + trace_dev_pm_qos_add_request(dev_name(dev), type, value); + if (!ret) { + req->dev = dev; + req->type = type; + ret = apply_constraint(req, PM_QOS_ADD_REQ, value); + } + return ret; +} + /** * dev_pm_qos_add_request - inserts new qos request into the list * @dev: target device for the constraint @@ -291,31 +345,11 @@ void dev_pm_qos_constraints_destroy(struct device *dev) int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value) { - int ret = 0; - - if (!dev || !req) /*guard against callers passing in null */ - return -EINVAL; - - if (WARN(dev_pm_qos_request_active(req), - "%s() called for already added request\n", __func__)) - return -EINVAL; + int ret; mutex_lock(&dev_pm_qos_mtx); - - if (IS_ERR(dev->power.qos)) - ret = -ENODEV; - else if (!dev->power.qos) - ret = dev_pm_qos_constraints_allocate(dev); - - trace_dev_pm_qos_add_request(dev_name(dev), type, value); - if (!ret) { - req->dev = dev; - req->type = type; - ret = apply_constraint(req, PM_QOS_ADD_REQ, value); - } - + ret = __dev_pm_qos_add_request(dev, req, type, value); mutex_unlock(&dev_pm_qos_mtx); - return ret; } EXPORT_SYMBOL_GPL(dev_pm_qos_add_request); @@ -343,6 +377,7 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req, switch(req->type) { case DEV_PM_QOS_RESUME_LATENCY: + case DEV_PM_QOS_LATENCY_TOLERANCE: curr_value = req->data.pnode.prio; break; case DEV_PM_QOS_FLAGS: @@ -563,6 +598,10 @@ static void __dev_pm_qos_drop_user_request(struct device *dev, req = dev->power.qos->resume_latency_req; dev->power.qos->resume_latency_req = NULL; break; + case DEV_PM_QOS_LATENCY_TOLERANCE: + req = dev->power.qos->latency_tolerance_req; + dev->power.qos->latency_tolerance_req = NULL; + break; case DEV_PM_QOS_FLAGS: req = dev->power.qos->flags_req; dev->power.qos->flags_req = NULL; @@ -768,6 +807,67 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set) pm_runtime_put(dev); return ret; } + +/** + * dev_pm_qos_get_user_latency_tolerance - Get user space latency tolerance. + * @dev: Device to obtain the user space latency tolerance for. + */ +s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev) +{ + s32 ret; + + mutex_lock(&dev_pm_qos_mtx); + ret = IS_ERR_OR_NULL(dev->power.qos) + || !dev->power.qos->latency_tolerance_req ? + PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT : + dev->power.qos->latency_tolerance_req->data.pnode.prio; + mutex_unlock(&dev_pm_qos_mtx); + return ret; +} + +/** + * dev_pm_qos_update_user_latency_tolerance - Update user space latency tolerance. + * @dev: Device to update the user space latency tolerance for. + * @val: New user space latency tolerance for @dev (negative values disable). + */ +int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val) +{ + int ret; + + mutex_lock(&dev_pm_qos_mtx); + + if (IS_ERR_OR_NULL(dev->power.qos) + || !dev->power.qos->latency_tolerance_req) { + struct dev_pm_qos_request *req; + + if (val < 0) { + ret = -EINVAL; + goto out; + } + req = kzalloc(sizeof(*req), GFP_KERNEL); + if (!req) { + ret = -ENOMEM; + goto out; + } + ret = __dev_pm_qos_add_request(dev, req, DEV_PM_QOS_LATENCY_TOLERANCE, val); + if (ret < 0) { + kfree(req); + goto out; + } + dev->power.qos->latency_tolerance_req = req; + } else { + if (val < 0) { + __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY_TOLERANCE); + ret = 0; + } else { + ret = __dev_pm_qos_update_request(dev->power.qos->latency_tolerance_req, val); + } + } + + out: + mutex_unlock(&dev_pm_qos_mtx); + return ret; +} #else /* !CONFIG_PM_RUNTIME */ static void __dev_pm_qos_hide_latency_limit(struct device *dev) {} static void __dev_pm_qos_hide_flags(struct device *dev) {} diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 4e24955aac8a..95b181d1ca6d 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -246,6 +246,40 @@ static ssize_t pm_qos_resume_latency_store(struct device *dev, static DEVICE_ATTR(pm_qos_resume_latency_us, 0644, pm_qos_resume_latency_show, pm_qos_resume_latency_store); +static ssize_t pm_qos_latency_tolerance_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + s32 value = dev_pm_qos_get_user_latency_tolerance(dev); + + if (value < 0) + return sprintf(buf, "auto\n"); + else if (value == PM_QOS_LATENCY_ANY) + return sprintf(buf, "any\n"); + + return sprintf(buf, "%d\n", value); +} + +static ssize_t pm_qos_latency_tolerance_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t n) +{ + s32 value; + int ret; + + if (kstrtos32(buf, 0, &value)) { + if (!strcmp(buf, "auto") || !strcmp(buf, "auto\n")) + value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT; + else if (!strcmp(buf, "any") || !strcmp(buf, "any\n")) + value = PM_QOS_LATENCY_ANY; + } + ret = dev_pm_qos_update_user_latency_tolerance(dev, value); + return ret < 0 ? ret : n; +} + +static DEVICE_ATTR(pm_qos_latency_tolerance_us, 0644, + pm_qos_latency_tolerance_show, pm_qos_latency_tolerance_store); + static ssize_t pm_qos_no_power_off_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -631,6 +665,17 @@ static struct attribute_group pm_qos_resume_latency_attr_group = { .attrs = pm_qos_resume_latency_attrs, }; +static struct attribute *pm_qos_latency_tolerance_attrs[] = { +#ifdef CONFIG_PM_RUNTIME + &dev_attr_pm_qos_latency_tolerance_us.attr, +#endif /* CONFIG_PM_RUNTIME */ + NULL, +}; +static struct attribute_group pm_qos_latency_tolerance_attr_group = { + .name = power_group_name, + .attrs = pm_qos_latency_tolerance_attrs, +}; + static struct attribute *pm_qos_flags_attrs[] = { #ifdef CONFIG_PM_RUNTIME &dev_attr_pm_qos_no_power_off.attr, @@ -656,18 +701,23 @@ int dpm_sysfs_add(struct device *dev) if (rc) goto err_out; } - if (device_can_wakeup(dev)) { rc = sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group); - if (rc) { - if (pm_runtime_callbacks_present(dev)) - sysfs_unmerge_group(&dev->kobj, - &pm_runtime_attr_group); - goto err_out; - } + if (rc) + goto err_runtime; + } + if (dev->power.set_latency_tolerance) { + rc = sysfs_merge_group(&dev->kobj, + &pm_qos_latency_tolerance_attr_group); + if (rc) + goto err_wakeup; } return 0; + err_wakeup: + sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); + err_runtime: + sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group); err_out: sysfs_remove_group(&dev->kobj, &pm_attr_group); return rc; @@ -710,6 +760,7 @@ void rpm_sysfs_remove(struct device *dev) void dpm_sysfs_remove(struct device *dev) { + sysfs_unmerge_group(&dev->kobj, &pm_qos_latency_tolerance_attr_group); dev_pm_qos_constraints_destroy(dev); rpm_sysfs_remove(dev); sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); diff --git a/include/linux/pm.h b/include/linux/pm.h index 8c6583a53a06..db2be5f3e030 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -582,6 +582,7 @@ struct dev_pm_info { unsigned long accounting_timestamp; #endif struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ + void (*set_latency_tolerance)(struct device *, s32); struct dev_pm_qos *qos; }; diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 2d8ce50877d8..0b476019be55 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -33,6 +33,9 @@ enum pm_qos_flags_status { #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE 0 +#define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0 +#define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1) +#define PM_QOS_LATENCY_ANY ((s32)(~(__u32)0 >> 1)) #define PM_QOS_FLAG_NO_POWER_OFF (1 << 0) #define PM_QOS_FLAG_REMOTE_WAKEUP (1 << 1) @@ -50,6 +53,7 @@ struct pm_qos_flags_request { enum dev_pm_qos_req_type { DEV_PM_QOS_RESUME_LATENCY = 1, + DEV_PM_QOS_LATENCY_TOLERANCE, DEV_PM_QOS_FLAGS, }; @@ -89,8 +93,10 @@ struct pm_qos_flags { struct dev_pm_qos { struct pm_qos_constraints resume_latency; + struct pm_qos_constraints latency_tolerance; struct pm_qos_flags flags; struct dev_pm_qos_request *resume_latency_req; + struct dev_pm_qos_request *latency_tolerance_req; struct dev_pm_qos_request *flags_req; }; @@ -196,6 +202,8 @@ void dev_pm_qos_hide_latency_limit(struct device *dev); int dev_pm_qos_expose_flags(struct device *dev, s32 value); void dev_pm_qos_hide_flags(struct device *dev); int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); +s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev); +int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val); static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { @@ -215,6 +223,10 @@ static inline int dev_pm_qos_expose_flags(struct device *dev, s32 value) static inline void dev_pm_qos_hide_flags(struct device *dev) {} static inline int dev_pm_qos_update_flags(struct device *dev, s32 m, bool set) { return 0; } +static inline s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev) + { return PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT; } +static inline int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val) + { return 0; } static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { return 0; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; } diff --git a/kernel/power/qos.c b/kernel/power/qos.c index e23ae38e647f..884b77058864 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -173,6 +173,7 @@ int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, { unsigned long flags; int prev_value, curr_value, new_value; + int ret; spin_lock_irqsave(&pm_qos_lock, flags); prev_value = pm_qos_get_value(c); @@ -208,13 +209,15 @@ int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, trace_pm_qos_update_target(action, prev_value, curr_value); if (prev_value != curr_value) { - blocking_notifier_call_chain(c->notifiers, - (unsigned long)curr_value, - NULL); - return 1; + ret = 1; + if (c->notifiers) + blocking_notifier_call_chain(c->notifiers, + (unsigned long)curr_value, + NULL); } else { - return 0; + ret = 0; } + return ret; } /** -- cgit v1.2.3 From 9cb32acf095e806e864c29d060dd79580fcd3d4f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:35:46 +0100 Subject: ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler In some cases it may be necessary to perform certain setup/cleanup operations on a device object representing a physical device after it has been associated with an ACPI companion by acpi_bind_one() or before disassociating it from that companion by acpi_unbind_one(), respectively. If there is a struct acpi_bus_type object for the given device's bus type, the .setup()/.cleanup() callbacks from there are executed for these purposes. However, an analogous mechanism will be necessary for devices whose bus types don't have corresponding struct acpi_bus_type objects and that have specific ACPI scan handlers. For those devices, add new .bind() and .unbind() callbacks to struct acpi_scan_handler that will be executed by acpi_platform_notify() right after the given device has been associated with an ACPI comapnion and by acpi_platform_notify_remove() right before calling acpi_unbind_one() for that device, respectively. To make that work for scan handlers registering new devices in their .attach() callbacks, modify acpi_scan_attach_handler() to set the ACPI device object's handler field before calling .attach() from the scan handler at hand. This changeset includes a fix from Mika Westerberg. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/glue.c | 12 ++++++++++++ drivers/acpi/scan.c | 9 +++++---- include/acpi/acpi_bus.h | 2 ++ 3 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 0c789224d40d..f774c65ecb8b 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -287,6 +287,7 @@ EXPORT_SYMBOL_GPL(acpi_unbind_one); static int acpi_platform_notify(struct device *dev) { struct acpi_bus_type *type = acpi_get_bus_type(dev); + struct acpi_device *adev; int ret; ret = acpi_bind_one(dev, NULL); @@ -303,9 +304,14 @@ static int acpi_platform_notify(struct device *dev) if (ret) goto out; } + adev = ACPI_COMPANION(dev); + if (!adev) + goto out; if (type && type->setup) type->setup(dev); + else if (adev->handler && adev->handler->bind) + adev->handler->bind(dev); out: #if ACPI_GLUE_DEBUG @@ -324,11 +330,17 @@ static int acpi_platform_notify(struct device *dev) static int acpi_platform_notify_remove(struct device *dev) { + struct acpi_device *adev = ACPI_COMPANION(dev); struct acpi_bus_type *type; + if (!adev) + return 0; + type = acpi_get_bus_type(dev); if (type && type->cleanup) type->cleanup(dev); + else if (adev->handler && adev->handler->unbind) + adev->handler->unbind(dev); acpi_unbind_one(dev); return 0; diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 57b053f424d1..9c4581fd5827 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2015,13 +2015,14 @@ static int acpi_scan_attach_handler(struct acpi_device *device) handler = acpi_scan_match_handler(hwid->id, &devid); if (handler) { + device->handler = handler; ret = handler->attach(device, devid); - if (ret > 0) { - device->handler = handler; + if (ret > 0) break; - } else if (ret < 0) { + + device->handler = NULL; + if (ret < 0) break; - } } } return ret; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8256eb4ad057..c93bce469492 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -133,6 +133,8 @@ struct acpi_scan_handler { struct list_head list_node; int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); void (*detach)(struct acpi_device *dev); + void (*bind)(struct device *phys_dev); + void (*unbind)(struct device *phys_dev); struct acpi_hotplug_profile hotplug; }; -- cgit v1.2.3 From 1a8f83515c1646e134163f0ab310362fae49fcca Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:35:53 +0100 Subject: ACPI / LPSS: Support for device latency tolerance PM QoS Add a new routine, acpi_lpss_set_ltr(), for setting latency tolerance values for LPSS devices having LTR (Latency Tolerance Reporting) registers. Add .bind()/.unbind() callbacks to lpss_handler to set the LPSS devices' power.set_latency_tolerance callback pointers to acpi_lpss_set_ltr() during device addition and to clear them on device removal, respectively. That will cause the device latency tolerance PM QoS to work for the devices in question as documented. This changeset includes a fix from Mika Westerberg. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 70 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 6745fe137b9e..0a68fc6b5800 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -33,6 +33,13 @@ ACPI_MODULE_NAME("acpi_lpss"); #define LPSS_GENERAL_UART_RTS_OVRD BIT(3) #define LPSS_SW_LTR 0x10 #define LPSS_AUTO_LTR 0x14 +#define LPSS_LTR_SNOOP_REQ BIT(15) +#define LPSS_LTR_SNOOP_MASK 0x0000FFFF +#define LPSS_LTR_SNOOP_LAT_1US 0x800 +#define LPSS_LTR_SNOOP_LAT_32US 0xC00 +#define LPSS_LTR_SNOOP_LAT_SHIFT 5 +#define LPSS_LTR_SNOOP_LAT_CUTOFF 3000 +#define LPSS_LTR_MAX_VAL 0x3FF #define LPSS_TX_INT 0x20 #define LPSS_TX_INT_MASK BIT(1) @@ -315,6 +322,17 @@ static int acpi_lpss_create_device(struct acpi_device *adev, return ret; } +static u32 __lpss_reg_read(struct lpss_private_data *pdata, unsigned int reg) +{ + return readl(pdata->mmio_base + pdata->dev_desc->prv_offset + reg); +} + +static void __lpss_reg_write(u32 val, struct lpss_private_data *pdata, + unsigned int reg) +{ + writel(val, pdata->mmio_base + pdata->dev_desc->prv_offset + reg); +} + static int lpss_reg_read(struct device *dev, unsigned int reg, u32 *val) { struct acpi_device *adev; @@ -336,7 +354,7 @@ static int lpss_reg_read(struct device *dev, unsigned int reg, u32 *val) ret = -ENODEV; goto out; } - *val = readl(pdata->mmio_base + pdata->dev_desc->prv_offset + reg); + *val = __lpss_reg_read(pdata, reg); out: spin_unlock_irqrestore(&dev->power.lock, flags); @@ -389,6 +407,37 @@ static struct attribute_group lpss_attr_group = { .name = "lpss_ltr", }; +static void acpi_lpss_set_ltr(struct device *dev, s32 val) +{ + struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev)); + u32 ltr_mode, ltr_val; + + ltr_mode = __lpss_reg_read(pdata, LPSS_GENERAL); + if (val < 0) { + if (ltr_mode & LPSS_GENERAL_LTR_MODE_SW) { + ltr_mode &= ~LPSS_GENERAL_LTR_MODE_SW; + __lpss_reg_write(ltr_mode, pdata, LPSS_GENERAL); + } + return; + } + ltr_val = __lpss_reg_read(pdata, LPSS_SW_LTR) & ~LPSS_LTR_SNOOP_MASK; + if (val >= LPSS_LTR_SNOOP_LAT_CUTOFF) { + ltr_val |= LPSS_LTR_SNOOP_LAT_32US; + val = LPSS_LTR_MAX_VAL; + } else if (val > LPSS_LTR_MAX_VAL) { + ltr_val |= LPSS_LTR_SNOOP_LAT_32US | LPSS_LTR_SNOOP_REQ; + val >>= LPSS_LTR_SNOOP_LAT_SHIFT; + } else { + ltr_val |= LPSS_LTR_SNOOP_LAT_1US | LPSS_LTR_SNOOP_REQ; + } + ltr_val |= val; + __lpss_reg_write(ltr_val, pdata, LPSS_SW_LTR); + if (!(ltr_mode & LPSS_GENERAL_LTR_MODE_SW)) { + ltr_mode |= LPSS_GENERAL_LTR_MODE_SW; + __lpss_reg_write(ltr_mode, pdata, LPSS_GENERAL); + } +} + static int acpi_lpss_platform_notify(struct notifier_block *nb, unsigned long action, void *data) { @@ -426,9 +475,29 @@ static struct notifier_block acpi_lpss_nb = { .notifier_call = acpi_lpss_platform_notify, }; +static void acpi_lpss_bind(struct device *dev) +{ + struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev)); + + if (!pdata || !pdata->mmio_base || !pdata->dev_desc->ltr_required) + return; + + if (pdata->mmio_size >= pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) + dev->power.set_latency_tolerance = acpi_lpss_set_ltr; + else + dev_err(dev, "MMIO size insufficient to access LTR\n"); +} + +static void acpi_lpss_unbind(struct device *dev) +{ + dev->power.set_latency_tolerance = NULL; +} + static struct acpi_scan_handler lpss_handler = { .ids = acpi_lpss_device_ids, .attach = acpi_lpss_create_device, + .bind = acpi_lpss_bind, + .unbind = acpi_lpss_unbind, }; void __init acpi_lpss_init(void) -- cgit v1.2.3 From 71d821fdaec08afcbfb3cf258c0d64ea0e336ff3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 11 Feb 2014 00:36:00 +0100 Subject: PM / QoS: Add type to dev_pm_qos_add_ancestor_request() arguments Rework dev_pm_qos_add_ancestor_request() so that device PM QoS type is passed to it as the third argument and make it support the DEV_PM_QOS_LATENCY_TOLERANCE device PM QoS type (in addition to DEV_PM_QOS_RESUME_LATENCY). That will allow the drivers of devices without latency tolerance hardware support to use their ancestors having it as proxies for their latency tolerance requirements. Signed-off-by: Rafael J. Wysocki --- Documentation/power/pm_qos_interface.txt | 6 ++++-- drivers/base/power/qos.c | 22 +++++++++++++++++----- drivers/input/touchscreen/st1232.c | 3 ++- include/linux/pm_qos.h | 7 +++++-- 4 files changed, 28 insertions(+), 10 deletions(-) diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index ed743bbad87c..a5da5c7e7128 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -134,9 +134,11 @@ The meaning of the return values is as follows: PM_QOS_FLAGS_UNDEFINED: The device's PM QoS structure has not been initialized or the list of requests is empty. -int dev_pm_qos_add_ancestor_request(dev, handle, value) +int dev_pm_qos_add_ancestor_request(dev, handle, type, value) Add a PM QoS request for the first direct ancestor of the given device whose -power.ignore_children flag is unset. +power.ignore_children flag is unset (for DEV_PM_QOS_RESUME_LATENCY requests) +or whose power.set_latency_tolerance callback pointer is not NULL (for +DEV_PM_QOS_LATENCY_TOLERANCE requests). int dev_pm_qos_expose_latency_limit(device, value) Add a request to the device's PM QoS list of resume latency constraints and diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 84756f7f09d9..36b9eb4862cb 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -565,20 +565,32 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_remove_global_notifier); * dev_pm_qos_add_ancestor_request - Add PM QoS request for device's ancestor. * @dev: Device whose ancestor to add the request for. * @req: Pointer to the preallocated handle. + * @type: Type of the request. * @value: Constraint latency value. */ int dev_pm_qos_add_ancestor_request(struct device *dev, - struct dev_pm_qos_request *req, s32 value) + struct dev_pm_qos_request *req, + enum dev_pm_qos_req_type type, s32 value) { struct device *ancestor = dev->parent; int ret = -ENODEV; - while (ancestor && !ancestor->power.ignore_children) - ancestor = ancestor->parent; + switch (type) { + case DEV_PM_QOS_RESUME_LATENCY: + while (ancestor && !ancestor->power.ignore_children) + ancestor = ancestor->parent; + break; + case DEV_PM_QOS_LATENCY_TOLERANCE: + while (ancestor && !ancestor->power.set_latency_tolerance) + ancestor = ancestor->parent; + + break; + default: + ancestor = NULL; + } if (ancestor) - ret = dev_pm_qos_add_request(ancestor, req, - DEV_PM_QOS_RESUME_LATENCY, value); + ret = dev_pm_qos_add_request(ancestor, req, type, value); if (ret < 0) req->dev = NULL; diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index 5c342b3139e8..3c0f57efe7b1 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -134,7 +134,8 @@ static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id) } else if (!ts->low_latency_req.dev) { /* First contact, request 100 us latency. */ dev_pm_qos_add_ancestor_request(&ts->client->dev, - &ts->low_latency_req, 100); + &ts->low_latency_req, + DEV_PM_QOS_RESUME_LATENCY, 100); } /* SYN_REPORT */ diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 0b476019be55..9ab4bf7c4646 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -149,7 +149,8 @@ int dev_pm_qos_remove_global_notifier(struct notifier_block *notifier); void dev_pm_qos_constraints_init(struct device *dev); void dev_pm_qos_constraints_destroy(struct device *dev); int dev_pm_qos_add_ancestor_request(struct device *dev, - struct dev_pm_qos_request *req, s32 value); + struct dev_pm_qos_request *req, + enum dev_pm_qos_req_type type, s32 value); #else static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) @@ -192,7 +193,9 @@ static inline void dev_pm_qos_constraints_destroy(struct device *dev) dev->power.power_state = PMSG_INVALID; } static inline int dev_pm_qos_add_ancestor_request(struct device *dev, - struct dev_pm_qos_request *req, s32 value) + struct dev_pm_qos_request *req, + enum dev_pm_qos_req_type type, + s32 value) { return 0; } #endif -- cgit v1.2.3 From faae404ebdc6bba744919d82e64c16448eb24a36 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 11 Feb 2014 10:25:27 +0800 Subject: ACPICA: Add "Windows 2013" string to _OSI support. This urgent patch is cherry picked from ACPICA upstream. It is reported that some platforms fail to boot without this new _OSI string. This change adds this string for Windows 8.1 and Server 2012 R2. Reported-by: Zhang Rui Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/utosi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c index e210e51a12f3..1e5525e87d34 100644 --- a/drivers/acpi/acpica/utosi.c +++ b/drivers/acpi/acpica/utosi.c @@ -74,6 +74,7 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = { {"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /* Windows Vista SP2 - Added 09/2010 */ {"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */ {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and Server 2012 - Added 08/2012 */ + {"Windows 2013", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8.1 and Server 2012 R2 - Added 01/2014 */ /* Feature Group Strings */ -- cgit v1.2.3 From 7e66b46b240de40b2fd85f4f8e90bb621213e30f Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Tue, 11 Feb 2014 10:51:33 +0800 Subject: ACPICA: acpidump: Add sparse declarators support. Linux kernel resident ACPICA headers include some sparse declarators for kernel static checkers. This patch adds code to disable them for non __KERNEL__ defined code so that it is possible for the ACPICA user space tool's source files to be built with Linux kernel ACPICA header files included. Lv Zheng. Linux kernel build is not affected by this commit. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/acpi/platform/aclinux.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 587b1e27e6a3..26ef0954a2a9 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -83,6 +83,16 @@ #include #include +/* Disable kernel specific declarators */ + +#ifndef __init +#define __init +#endif + +#ifndef __iomem +#define __iomem +#endif + /* Host-dependent types and defines for user-space ACPICA */ #define ACPI_FLUSH_CPU_CACHE() -- cgit v1.2.3 From e252652fb2664d42de19f933aa3688bbc470de3f Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Tue, 11 Feb 2014 10:51:43 +0800 Subject: ACPICA: acpidump: Remove integer types translation protection. Remove translation protection for applications as Linux tools folder will start to use such types. In Linux kernel source tree, after removing this translation protection, the u8/u16/u32/u64/s32/s64 typedefs are exposed for both __KERNEL__ builds and !__KERNEL__ builds (tools/power/acpi) and the original definitions of ACPI_UINT8/16/32/64_MAX are changed. For !__KERNEL__ builds, this kind of defintions should already been tested by the distribution vendors that are distributing binary ACPICA package and we've achieved the successful built/run test result in the kernel source tree. For __KERNEL__ builds, there are 2 things affected: 1. u8/u16/u32/u64/s32/s64 type definitions: Since Linux has already type defined u8/u16/u32/u64/s32/s64 in include/uapi/asm-generic/int-ll64.h for __KERNEL__. In order not to introduce build regressions where the 2 typedefs are differed, ACPI_USE_SYSTEM_INTTYPES is introduced to mask out ACPICA's typedefs. It must be defined for Linux __KERNEL__ builds. 2. ACPI_UINT8/16/32/64_MAX definitions: Before applying this change: ACPI_UINT8_MAX: sizeof (UINT8) UINT8: unsigned char ACPI_UINT16_MAX: sizeof (UINT16) UINT16: unsigned short ACPI_UINT32_MAX: sizeof (UINT32) INT32: int UINT32: unsigned int ACPI_UINT64_MAX: sizeof (UINT64) INT64: COMPILER_DEPENDENT_INT64 COMPILER_DEPENDENT_INT64: signed long (IA64) or signed long long (IA32) UINT64: COMPILER_DEPENDENT_UINT64 COMPILER_DEPENDENT_UINT64: unsigned long (IA64) or unsigned long long (IA32) After applying this change: ACPI_UINT8_MAX: sizeof (u8) u8: unsigned char UINT8: (removed from actypes.h) ACPI_UINT16_MAX: sizeof (u16) u16: unsigned short UINT16: (removed from actypes.h) ACPI_UINT32_MAX: sizeof (u32) INT32/UINT32: (removed from actypes.h) s32: signed int u32: unsigned int ACPI_UINT64_MAX: sizeof (u64) INT64/UINT64: (removed from actypes.h) u64: unsigned long long s64: signed long long COMPILER_DEPENDENT_INT64: signed long (IA64) (not used any more) signed long long (IA32) (not used any more) COMPILER_DEPENDENT_UINT64: unsigned long (IA64) (not used any more) unsigned long long (IA32) (not used any more) All definitions are equal except ACPI_UINT64_MAX for CONFIG_IA64. It is changed from sizeof(unsigned long) to sizeof(unsigned long long). By investigation, 64bit Linux kernel build is LP64 compliant, i.e., sizeof(long) and (pointer) are 64. As sizeof(unsigned long) equals to sizeof(unsigned long long) on IA64 platform where CONFIG_64BIT cannot be disabled, this change actually will not affect the value of ACPI_UINT64_MAX on IA64 platforms. This patch is necessary for the ACPICA's acpidump tool to build correctly. Lv Zheng. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/acpi/actypes.h | 64 ++++++++++++++++++++--------------------- include/acpi/platform/aclinux.h | 2 ++ 2 files changed, 34 insertions(+), 32 deletions(-) diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 0bdf5c7a739e..e76356574374 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -55,18 +55,16 @@ #error ACPI_MACHINE_WIDTH not defined #endif -/*! [Begin] no source code translation */ - /* * Data type ranges * Note: These macros are designed to be compiler independent as well as * working around problems that some 32-bit compilers have with 64-bit * constants. */ -#define ACPI_UINT8_MAX (UINT8) (~((UINT8) 0)) /* 0xFF */ -#define ACPI_UINT16_MAX (UINT16)(~((UINT16) 0)) /* 0xFFFF */ -#define ACPI_UINT32_MAX (UINT32)(~((UINT32) 0)) /* 0xFFFFFFFF */ -#define ACPI_UINT64_MAX (UINT64)(~((UINT64) 0)) /* 0xFFFFFFFFFFFFFFFF */ +#define ACPI_UINT8_MAX (u8) (~((u8) 0)) /* 0xFF */ +#define ACPI_UINT16_MAX (u16)(~((u16) 0)) /* 0xFFFF */ +#define ACPI_UINT32_MAX (u32)(~((u32) 0)) /* 0xFFFFFFFF */ +#define ACPI_UINT64_MAX (u64)(~((u64) 0)) /* 0xFFFFFFFFFFFFFFFF */ #define ACPI_ASCII_MAX 0x7F /* @@ -77,18 +75,18 @@ * * 1) The following types are of fixed size for all targets (16/32/64): * - * BOOLEAN Logical boolean + * u8 Logical boolean * - * UINT8 8-bit (1 byte) unsigned value - * UINT16 16-bit (2 byte) unsigned value - * UINT32 32-bit (4 byte) unsigned value - * UINT64 64-bit (8 byte) unsigned value + * u8 8-bit (1 byte) unsigned value + * u16 16-bit (2 byte) unsigned value + * u32 32-bit (4 byte) unsigned value + * u64 64-bit (8 byte) unsigned value * - * INT16 16-bit (2 byte) signed value - * INT32 32-bit (4 byte) signed value - * INT64 64-bit (8 byte) signed value + * s16 16-bit (2 byte) signed value + * s32 32-bit (4 byte) signed value + * s64 64-bit (8 byte) signed value * - * COMPILER_DEPENDENT_UINT64/INT64 - These types are defined in the + * COMPILER_DEPENDENT_UINT64/s64 - These types are defined in the * compiler-dependent header(s) and were introduced because there is no common * 64-bit integer type across the various compilation models, as shown in * the table below. @@ -110,11 +108,11 @@ * usually used for memory allocation, efficient loop counters, and array * indexes. The types are similar to the size_t type in the C library and are * required because there is no C type that consistently represents the native - * data width. ACPI_SIZE is needed because there is no guarantee that a + * data width. acpi_size is needed because there is no guarantee that a * kernel-level C library is present. * - * ACPI_SIZE 16/32/64-bit unsigned value - * ACPI_NATIVE_INT 16/32/64-bit signed value + * acpi_size 16/32/64-bit unsigned value + * acpi_native_int 16/32/64-bit signed value */ /******************************************************************************* @@ -123,13 +121,15 @@ * ******************************************************************************/ -typedef unsigned char BOOLEAN; -typedef unsigned char UINT8; -typedef unsigned short UINT16; -typedef COMPILER_DEPENDENT_UINT64 UINT64; -typedef COMPILER_DEPENDENT_INT64 INT64; +#ifndef ACPI_USE_SYSTEM_INTTYPES + +typedef unsigned char u8; +typedef unsigned char u8; +typedef unsigned short u16; +typedef COMPILER_DEPENDENT_UINT64 u64; +typedef COMPILER_DEPENDENT_INT64 s64; -/*! [End] no source code translation !*/ +#endif /* ACPI_USE_SYSTEM_INTTYPES */ /* * Value returned by acpi_os_get_thread_id. There is no standard "thread_id" @@ -149,12 +149,12 @@ typedef COMPILER_DEPENDENT_INT64 INT64; #if ACPI_MACHINE_WIDTH == 64 -/*! [Begin] no source code translation (keep the typedefs as-is) */ +#ifndef ACPI_USE_SYSTEM_INTTYPES -typedef unsigned int UINT32; -typedef int INT32; +typedef unsigned int u32; +typedef int s32; -/*! [End] no source code translation !*/ +#endif /* ACPI_USE_SYSTEM_INTTYPES */ typedef s64 acpi_native_int; @@ -188,12 +188,12 @@ typedef u64 acpi_physical_address; #elif ACPI_MACHINE_WIDTH == 32 -/*! [Begin] no source code translation (keep the typedefs as-is) */ +#ifndef ACPI_USE_SYSTEM_INTTYPES -typedef unsigned int UINT32; -typedef int INT32; +typedef unsigned int u32; +typedef int s32; -/*! [End] no source code translation !*/ +#endif /* ACPI_USE_SYSTEM_INTTYPES */ typedef s32 acpi_native_int; diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 26ef0954a2a9..1ab66659f904 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -52,6 +52,8 @@ #ifdef __KERNEL__ +#define ACPI_USE_SYSTEM_INTTYPES + #include #include #include -- cgit v1.2.3 From 4dde507fc1984435f28862ddd1beb90822aa116c Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Tue, 11 Feb 2014 11:01:52 +0800 Subject: ACPICA: Add boot option to disable auto return object repair Sometimes, there might be bugs caused by unexpected AML which is compliant to the Windows but not compliant to the Linux implementation. There is a predefined validation mechanism implemented in ACPICA to repair the unexpected AML evaluation results that are caused by the unexpected AMLs. For example, BIOS may return misorder _CST result and the repair mechanism can make an ascending order on the returned _CST package object based on the C-state type. This mechanism is quite useful to implement an AML interpreter with better compliance with the real world where Windows is the de-facto standard and BIOS codes are only tested on one platform thus not compliant to the ACPI specification. But if a compliance issue hasn't been figured out yet, it will be difficult for developers to identify if the unexpected evaluation result is caused by this mechanism or by the AML interpreter. For example, _PR0 is expected to be a control method, but BIOS may use Package: "Name(_PR0, Package(1) {P1PR})". This boot option can disable the predefined validation mechanism so that developers can make sure the root cause comes from the parser/executer. This patch adds a new kernel parameter to disable this feature. A build test has been made on a Dell Inspiron mini 1100 (i386 z530) machine when this patch is applied and the corresponding boot test is performed w/ or w/o the new kernel parameter specified. References: https://bugzilla.kernel.org/show_bug.cgi?id=67901 Tested-by: Fabian Wehning Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- Documentation/kernel-parameters.txt | 8 ++++++++ drivers/acpi/osl.c | 11 +++++++++++ 2 files changed, 19 insertions(+) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 7116fda7077f..bf0fda0125f0 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -231,6 +231,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT + acpica_no_return_repair [HW, ACPI] + Disable AML predefined validation mechanism + This mechanism can repair the evaluation result to make + the return objects more ACPI specification compliant. + This option is useful for developers to identify the + root cause of an AML interpreter issue when the issue + has something to do with the repair mechanism. + acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS Format: To spoof as Windows 98: ="Microsoft Windows" diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index fc1aa7909690..0d7b7145399e 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1780,6 +1780,17 @@ static int __init acpi_no_auto_ssdt_setup(char *s) __setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup); +static int __init acpi_disable_return_repair(char *s) +{ + printk(KERN_NOTICE PREFIX + "ACPI: Predefined validation mechanism disabled\n"); + acpi_gbl_disable_auto_repair = TRUE; + + return 1; +} + +__setup("acpica_no_return_repair", acpi_disable_return_repair); + acpi_status __init acpi_os_initialize(void) { acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block); -- cgit v1.2.3 From 7b8747725d0a6842a82ea60fe95b9d4d7ae008fd Mon Sep 17 00:00:00 2001 From: Jacob Pan Date: Mon, 10 Feb 2014 06:11:51 -0800 Subject: powercap / intel_rapl: relax sanity check on energy counters Some RAPL domains may not be active at the time driver is being loaded. Checking energy counter increment may be too strict and time consuming. So relax the sanity check on energy counters of these domains. Otherwise, they may be ignored and become unavailable to the powercap framework. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki --- drivers/powercap/intel_rapl.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c index 3c6768378a94..0e37fe106eb2 100644 --- a/drivers/powercap/intel_rapl.c +++ b/drivers/powercap/intel_rapl.c @@ -1147,6 +1147,11 @@ static int rapl_check_domain(int cpu, int domain) if (rdmsrl_safe_on_cpu(cpu, msr, &val1)) return -ENODEV; + /* PP1/uncore/graphics domain may not be active at the time of + * driver loading. So skip further checks. + */ + if (domain == RAPL_DOMAIN_PP1) + return 0; /* energy counters roll slowly on some domains */ while (++retry < 10) { usleep_range(10000, 15000); -- cgit v1.2.3 From d6b2e6d09aa18738dd29277617a186fa827bd7e1 Mon Sep 17 00:00:00 2001 From: Jacob Pan Date: Mon, 10 Feb 2014 06:11:52 -0800 Subject: powercap / intel_rapl: spell out SoC names Spell out names for supported SoCs. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki --- drivers/powercap/intel_rapl.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c index 0e37fe106eb2..61b51e17d932 100644 --- a/drivers/powercap/intel_rapl.c +++ b/drivers/powercap/intel_rapl.c @@ -834,7 +834,7 @@ static int rapl_write_data_raw(struct rapl_domain *rd, } static const struct x86_cpu_id energy_unit_quirk_ids[] = { - { X86_VENDOR_INTEL, 6, 0x37},/* VLV */ + { X86_VENDOR_INTEL, 6, 0x37},/* Valleyview */ {} }; @@ -947,11 +947,11 @@ static void package_power_limit_irq_restore(int package_id) } static const struct x86_cpu_id rapl_ids[] = { - { X86_VENDOR_INTEL, 6, 0x2a},/* SNB */ - { X86_VENDOR_INTEL, 6, 0x2d},/* SNB EP */ - { X86_VENDOR_INTEL, 6, 0x37},/* VLV */ - { X86_VENDOR_INTEL, 6, 0x3a},/* IVB */ - { X86_VENDOR_INTEL, 6, 0x45},/* HSW */ + { X86_VENDOR_INTEL, 6, 0x2a},/* Sandy Bridge */ + { X86_VENDOR_INTEL, 6, 0x2d},/* Sandy Bridge EP */ + { X86_VENDOR_INTEL, 6, 0x37},/* Valleyview */ + { X86_VENDOR_INTEL, 6, 0x3a},/* Ivy Bridge */ + { X86_VENDOR_INTEL, 6, 0x45},/* Haswell */ /* TODO: Add more CPU IDs after testing */ {} }; -- cgit v1.2.3 From 3799c5a032aefb258e2a19dfdb1e3780b78ee3ad Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Feb 2014 00:12:00 +0100 Subject: ACPI / hotplug / PCI: Rename register_slot() to acpiphp_add_context() The name of register_slot() doesn't really reflect what the function is does, so rename it to acpiphp_add_context() and add a proper kerneldoc comment to it. Signed-off-by: Rafael J. Wysocki --- drivers/pci/hotplug/acpiphp_glue.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 91276f9fe268..903af4d4a383 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -255,9 +255,15 @@ static void acpiphp_dock_release(void *data) put_bridge(context->func.parent); } -/* callback routine to register each ACPI PCI slot object */ -static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, - void **rv) +/** + * acpiphp_add_context - Add ACPIPHP context to an ACPI device object. + * @handle: ACPI handle of the object to add a context to. + * @lvl: Not used. + * @data: The object's parent ACPIPHP bridge. + * @rv: Not used. + */ +static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, + void **rv) { struct acpiphp_bridge *bridge = data; struct acpiphp_context *context; @@ -930,14 +936,14 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) acpi_unlock_hp_context(); } - /* must be added to the list prior to calling register_slot */ + /* Must be added to the list prior to calling acpiphp_add_context(). */ mutex_lock(&bridge_mutex); list_add(&bridge->list, &bridge_list); mutex_unlock(&bridge_mutex); /* register all slot objects under this bridge */ status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, - register_slot, NULL, bridge, NULL); + acpiphp_add_context, NULL, bridge, NULL); if (ACPI_FAILURE(status)) { acpi_handle_err(handle, "failed to register slots\n"); cleanup_bridge(bridge); -- cgit v1.2.3 From cc6254e00eb676dda6501655f8185aef7b761b4f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Feb 2014 00:12:09 +0100 Subject: ACPI / hotplug / PCI: Add ACPIPHP contexts to devices handled by PCIeHP Currently, ACPIPHP does not add hotplug context to devices that should be handled by the native PCI hotplug (PCIeHP) code. The reason why was because PCIeHP didn't know about the devices' connections with ACPI and would not clean up things properly during an eject of an ACPI-backed device, for example. However, after recent changes that made the ACPI core create struct acpi_device objects for all namespace nodes regardless of the underlying devices' status and added PCI rescan-remove locking to both ACPIPHP and PCIeHP, that concern is not valid any more. Namely, after those changes PCIeHP need not care about the ACPI side of things any more and it should be serialized with respect to ACPIPHP and they won't be running concurrently with each other in any case. For this reason, make ACPIPHP to add its hotplug context to all devices with ACPI companions, even the ones that should be handled by PCIeHP in principle. That may work around hotplug issues on some systems where PCIeHP is supposed to work, but it doesn't and the ACPI hotplug signaling works instead. Signed-off-by: Rafael J. Wysocki --- drivers/pci/hotplug/acpiphp_glue.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 903af4d4a383..f2f460cba5f7 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -277,9 +277,6 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, struct pci_dev *pdev = bridge->pci_dev; u32 val; - if (pdev && device_is_managed_by_native_pciehp(pdev)) - return AE_OK; - status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr); if (ACPI_FAILURE(status)) { if (status != AE_NOT_FOUND) @@ -338,8 +335,14 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, list_add_tail(&slot->node, &bridge->slots); - /* Register slots for ejectable functions only. */ - if (acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle)) { + /* + * Expose slots to user space for functions that have _EJ0 or _RMV or + * are located in dock stations. Do not expose them for devices handled + * by the native PCIe hotplug (PCIeHP), becuase that code is supposed to + * expose slots to user space in those cases. + */ + if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle)) + && !(pdev && device_is_managed_by_native_pciehp(pdev))) { unsigned long long sun; int retval; -- cgit v1.2.3 From 1e2380cd144f6a9619f72f80ad9a93268f63b8dc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Feb 2014 01:51:01 +0100 Subject: ACPI / dock: Dispatch dock notifications from the global notify handler The ACPI dock station code carries out an extra namespace scan before the main one in order to find and register all of the dock device objects. Then, it registers a notify handler for each of them for handling dock events. However, dock device objects need not be scanned for upfront. They very well can be enumerated and registered during the first phase of the main namespace scan, before attaching scan handlers and ACPI drivers to ACPI device objects. Then, the dependent devices can be added to the in the second phase. That makes it possible to drop the extra namespace scan, so do it. Moreover, it is not necessary to register notify handlers for all of the dock stations' namespace nodes, becuase notifications may be dispatched from the global notify handler for them. Do that and drop two functions used for dock notify handling, acpi_dock_deferred_cb() and dock_notify_handler(), that aren't necessary any more. Finally, some dock station objects have _HID objects matching the ACPI container scan handler which causes it to claim those objects and try to handle their hotplug, but that is not a good idea, because those objects have their own special hotplug handling anyway. For this reason, the hotplug_notify flag should not be set for ACPI device objects representing dock stations and the container scan handler should be made ignore those objects, so make that happen. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/container.c | 3 + drivers/acpi/dock.c | 171 ++++++++++++----------------------------------- drivers/acpi/internal.h | 11 ++- drivers/acpi/scan.c | 36 +++++++++- include/acpi/acpi_bus.h | 3 +- 5 files changed, 90 insertions(+), 134 deletions(-) diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index 0b6ae6eb5c4a..9c35765ac5e9 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -68,6 +68,9 @@ static int container_device_attach(struct acpi_device *adev, struct device *dev; int ret; + if (adev->flags.is_dock_station) + return 0; + cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); if (!cdev) return -ENOMEM; diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 5bfd769fc91f..44c6e6c0d545 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -103,8 +103,7 @@ enum dock_callback_type { * * Add the dependent device to the dock's dependent device list. */ -static int __init -add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) +static int add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) { struct dock_dependent_device *dd; @@ -218,6 +217,17 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, dock_release_hotplug(dd); } +static struct dock_station *find_dock_station(acpi_handle handle) +{ + struct dock_station *ds; + + list_for_each_entry(ds, &dock_stations, sibling) + if (ds->handle == handle) + return ds; + + return NULL; +} + /** * find_dock_dependent_device - get a device dependent on this dock * @ds: the dock station @@ -238,33 +248,19 @@ find_dock_dependent_device(struct dock_station *ds, acpi_handle handle) return NULL; } -/***************************************************************************** - * Dock functions * - *****************************************************************************/ -static int __init is_battery(acpi_handle handle) +void register_dock_dependent_device(struct acpi_device *adev, + acpi_handle dshandle) { - struct acpi_device_info *info; - int ret = 1; + struct dock_station *ds = find_dock_station(dshandle); + acpi_handle handle = adev->handle; - if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info))) - return 0; - if (!(info->valid & ACPI_VALID_HID)) - ret = 0; - else - ret = !strcmp("PNP0C0A", info->hardware_id.string); - - kfree(info); - return ret; + if (ds && !find_dock_dependent_device(ds, handle)) + add_dock_dependent_device(ds, handle); } -/* Check whether ACPI object is an ejectable battery or disk bay */ -static bool __init is_ejectable_bay(acpi_handle handle) -{ - if (acpi_has_method(handle, "_EJ0") && is_battery(handle)) - return true; - - return acpi_bay_match(handle); -} +/***************************************************************************** + * Dock functions * + *****************************************************************************/ /** * is_dock_device - see if a device is on a dock station @@ -598,20 +594,23 @@ static int handle_eject_request(struct dock_station *ds, u32 event) } /** - * dock_notify - act upon an acpi dock notification - * @ds: dock station - * @event: the acpi event + * dock_notify - Handle ACPI dock notification. + * @adev: Dock station's ACPI device object. + * @event: Event code. * * If we are notified to dock, then check to see if the dock is * present and then dock. Notify all drivers of the dock event, * and then hotplug and devices that may need hotplugging. */ -static void dock_notify(struct dock_station *ds, u32 event) +int dock_notify(struct acpi_device *adev, u32 event) { - acpi_handle handle = ds->handle; - struct acpi_device *adev = NULL; + acpi_handle handle = adev->handle; + struct dock_station *ds = find_dock_station(handle); int surprise_removal = 0; + if (!ds) + return -ENODEV; + /* * According to acpi spec 3.0a, if a DEVICE_CHECK notification * is sent and _DCK is present, it is assumed to mean an undock @@ -632,7 +631,6 @@ static void dock_notify(struct dock_station *ds, u32 event) switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: - acpi_bus_get_device(handle, &adev); if (!dock_in_progress(ds) && !acpi_device_enumerated(adev)) { begin_dock(ds); dock(ds); @@ -662,49 +660,8 @@ static void dock_notify(struct dock_station *ds, u32 event) else dock_event(ds, event, UNDOCK_EVENT); break; - default: - acpi_handle_err(handle, "Unknown dock event %d\n", event); } -} - -static void acpi_dock_deferred_cb(void *data, u32 event) -{ - acpi_scan_lock_acquire(); - dock_notify(data, event); - acpi_scan_lock_release(); -} - -static void dock_notify_handler(acpi_handle handle, u32 event, void *data) -{ - if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK - && event != ACPI_NOTIFY_EJECT_REQUEST) - return; - - acpi_hotplug_execute(acpi_dock_deferred_cb, data, event); -} - -/** - * find_dock_devices - find devices on the dock station - * @handle: the handle of the device we are examining - * @lvl: unused - * @context: the dock station private data - * @rv: unused - * - * This function is called by acpi_walk_namespace. It will - * check to see if an object has an _EJD method. If it does, then it - * will see if it is dependent on the dock station. - */ -static acpi_status __init find_dock_devices(acpi_handle handle, u32 lvl, - void *context, void **rv) -{ - struct dock_station *ds = context; - acpi_handle ejd = NULL; - - acpi_bus_get_ejd(handle, &ejd); - if (ejd == ds->handle) - add_dock_dependent_device(ds, handle); - - return AE_OK; + return 0; } /* @@ -803,23 +760,22 @@ static struct attribute_group dock_attribute_group = { }; /** - * dock_add - add a new dock station - * @handle: the dock station handle + * acpi_dock_add - Add a new dock station + * @adev: Dock station ACPI device object. * - * allocated and initialize a new dock station device. Find all devices - * that are on the dock station, and register for dock event notifications. + * allocated and initialize a new dock station device. */ -static int __init dock_add(acpi_handle handle) +void acpi_dock_add(struct acpi_device *adev) { struct dock_station *dock_station, ds = { NULL, }; + acpi_handle handle = adev->handle; struct platform_device *dd; - acpi_status status; int ret; dd = platform_device_register_data(NULL, "dock", dock_station_count, &ds, sizeof(ds)); if (IS_ERR(dd)) - return PTR_ERR(dd); + return; dock_station = dd->dev.platform_data; @@ -837,33 +793,24 @@ static int __init dock_add(acpi_handle handle) dock_station->flags |= DOCK_IS_DOCK; if (acpi_ata_match(handle)) dock_station->flags |= DOCK_IS_ATA; - if (is_battery(handle)) + if (acpi_device_is_battery(handle)) dock_station->flags |= DOCK_IS_BAT; ret = sysfs_create_group(&dd->dev.kobj, &dock_attribute_group); if (ret) goto err_unregister; - /* Find dependent devices */ - acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_dock_devices, NULL, - dock_station, NULL); - /* add the dock station as a device dependent on itself */ ret = add_dock_dependent_device(dock_station, handle); if (ret) goto err_rmgroup; - status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, - dock_notify_handler, dock_station); - if (ACPI_FAILURE(status)) { - ret = -ENODEV; - goto err_rmgroup; - } - dock_station_count++; list_add(&dock_station->sibling, &dock_stations); - return 0; + adev->flags.is_dock_station = true; + dev_info(&adev->dev, "ACPI dock station (docks/bays count: %d)\n", + dock_station_count); + return; err_rmgroup: remove_dock_dependent_devices(dock_station); @@ -871,38 +818,4 @@ err_rmgroup: err_unregister: platform_device_unregister(dd); acpi_handle_err(handle, "%s encountered error %d\n", __func__, ret); - return ret; -} - -/** - * find_dock_and_bay - look for dock stations and bays - * @handle: acpi handle of a device - * @lvl: unused - * @context: unused - * @rv: unused - * - * This is called by acpi_walk_namespace to look for dock stations and bays. - */ -static acpi_status __init -find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv) -{ - if (acpi_dock_match(handle) || is_ejectable_bay(handle)) - dock_add(handle); - - return AE_OK; -} - -void __init acpi_dock_init(void) -{ - /* look for dock stations and bays */ - acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_dock_and_bay, NULL, NULL, NULL); - - if (!dock_station_count) { - pr_info(PREFIX "No dock devices found.\n"); - return; - } - - pr_info(PREFIX "%s: %d docks/bays found\n", - ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count); } diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 143d5df5ec32..00e3220febda 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -37,9 +37,15 @@ void acpi_container_init(void); static inline void acpi_container_init(void) {} #endif #ifdef CONFIG_ACPI_DOCK -void acpi_dock_init(void); +void register_dock_dependent_device(struct acpi_device *adev, + acpi_handle dshandle); +int dock_notify(struct acpi_device *adev, u32 event); +void acpi_dock_add(struct acpi_device *adev); #else -static inline void acpi_dock_init(void) {} +static inline void register_dock_dependent_device(struct acpi_device *adev, + acpi_handle dshandle) {} +static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; } +static inline void acpi_dock_add(struct acpi_device *adev) {} #endif #ifdef CONFIG_ACPI_HOTPLUG_MEMORY void acpi_memory_hotplug_init(void); @@ -91,6 +97,7 @@ void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); int acpi_bind_one(struct device *dev, struct acpi_device *adev); int acpi_unbind_one(struct device *dev); bool acpi_device_is_present(struct acpi_device *adev); +bool acpi_device_is_battery(acpi_handle handle); /* -------------------------------------------------------------------------- Power Resource diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 8bb48bfab1df..ec12d970d78d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -487,7 +487,9 @@ void acpi_device_hotplug(void *data, u32 src) if (adev->handle == INVALID_ACPI_HANDLE) goto err_out; - if (adev->flags.hotplug_notify) { + if (adev->flags.is_dock_station) { + error = dock_notify(adev, src); + } else if (adev->flags.hotplug_notify) { error = acpi_generic_hotplug_event(adev, src); if (error == -EPERM) { ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; @@ -1660,6 +1662,29 @@ bool acpi_bay_match(acpi_handle handle) return acpi_ata_match(phandle); } +bool acpi_device_is_battery(acpi_handle handle) +{ + struct acpi_device_info *info; + bool ret = false; + + if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info))) + return false; + + if (info->valid & ACPI_VALID_HID) + ret = !strcmp("PNP0C0A", info->hardware_id.string); + + kfree(info); + return ret; +} + +static bool is_ejectable_bay(acpi_handle handle) +{ + if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(handle)) + return true; + + return acpi_bay_match(handle); +} + /* * acpi_dock_match - see if an acpi object has a _DCK method */ @@ -1964,6 +1989,10 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev) { struct acpi_hardware_id *hwid; + if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev->handle)) { + acpi_dock_add(adev); + return; + } list_for_each_entry(hwid, &adev->pnp.ids, list) { struct acpi_scan_handler *handler; @@ -2035,8 +2064,12 @@ static int acpi_scan_attach_handler(struct acpi_device *device) static void acpi_bus_attach(struct acpi_device *device) { struct acpi_device *child; + acpi_handle ejd; int ret; + if (ACPI_SUCCESS(acpi_bus_get_ejd(device->handle, &ejd))) + register_dock_dependent_device(device, ejd); + acpi_bus_get_status(device); /* Skip devices that are not present. */ if (!acpi_device_is_present(device)) { @@ -2189,7 +2222,6 @@ int __init acpi_scan_init(void) acpi_cmos_rtc_init(); acpi_container_init(); acpi_memory_hotplug_init(); - acpi_dock_init(); mutex_lock(&acpi_scan_lock); /* diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 32f90c7bcb03..8fb297b5307c 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -201,7 +201,8 @@ struct acpi_device_flags { u32 visited:1; u32 no_hotplug:1; u32 hotplug_notify:1; - u32 reserved:23; + u32 is_dock_station:1; + u32 reserved:22; }; /* File System */ -- cgit v1.2.3 From b43109fa466e6e29091b3e62e6a6c8a0bd099beb Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Feb 2014 00:09:34 +0100 Subject: ACPI / dock: Pass ACPI device pointer to acpi_device_is_battery() Since we already know what the device's PNP IDs are when acpi_device_is_battery() is called, it is not necessary to run acpi_get_object_info() for the device in that function. Instead, if acpi_device_is_battery() is passed a pointer to a struct acpi_device object, it can use the list of PNP IDs from that object, so make that happen and modify the function's header accordingly Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 2 +- drivers/acpi/internal.h | 2 +- drivers/acpi/scan.c | 24 +++++++++++------------- 3 files changed, 13 insertions(+), 15 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 44c6e6c0d545..edeb72b619fb 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -793,7 +793,7 @@ void acpi_dock_add(struct acpi_device *adev) dock_station->flags |= DOCK_IS_DOCK; if (acpi_ata_match(handle)) dock_station->flags |= DOCK_IS_ATA; - if (acpi_device_is_battery(handle)) + if (acpi_device_is_battery(adev)) dock_station->flags |= DOCK_IS_BAT; ret = sysfs_create_group(&dd->dev.kobj, &dock_attribute_group); diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 00e3220febda..4d081fc1aa24 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -97,7 +97,7 @@ void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); int acpi_bind_one(struct device *dev, struct acpi_device *adev); int acpi_unbind_one(struct device *dev); bool acpi_device_is_present(struct acpi_device *adev); -bool acpi_device_is_battery(acpi_handle handle); +bool acpi_device_is_battery(struct acpi_device *adev); /* -------------------------------------------------------------------------- Power Resource diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index ec12d970d78d..518aae461a00 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1662,24 +1662,22 @@ bool acpi_bay_match(acpi_handle handle) return acpi_ata_match(phandle); } -bool acpi_device_is_battery(acpi_handle handle) +bool acpi_device_is_battery(struct acpi_device *adev) { - struct acpi_device_info *info; - bool ret = false; - - if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info))) - return false; + struct acpi_hardware_id *hwid; - if (info->valid & ACPI_VALID_HID) - ret = !strcmp("PNP0C0A", info->hardware_id.string); + list_for_each_entry(hwid, &adev->pnp.ids, list) + if (!strcmp("PNP0C0A", hwid->id)) + return true; - kfree(info); - return ret; + return false; } -static bool is_ejectable_bay(acpi_handle handle) +static bool is_ejectable_bay(struct acpi_device *adev) { - if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(handle)) + acpi_handle handle = adev->handle; + + if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(adev)) return true; return acpi_bay_match(handle); @@ -1989,7 +1987,7 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev) { struct acpi_hardware_id *hwid; - if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev->handle)) { + if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev)) { acpi_dock_add(adev); return; } -- cgit v1.2.3 From af8874491de6f03237df5e20d87324cbbe226f19 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Feb 2014 00:09:47 +0100 Subject: ACPI / dock: Associate dock platform devices with ACPI device objects To allow user space to check which ACPI device object the dock station is represented by, make acpi_dock_add() indicate to platform_device_register_full() which ACPI device object should be the companion of the new platform device. This also ensures that the ACPI device object in question will not go away while the dock platform device is present (which is always). Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index edeb72b619fb..3199ce950e05 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -768,12 +768,18 @@ static struct attribute_group dock_attribute_group = { void acpi_dock_add(struct acpi_device *adev) { struct dock_station *dock_station, ds = { NULL, }; + struct platform_device_info pdevinfo; acpi_handle handle = adev->handle; struct platform_device *dd; int ret; - dd = platform_device_register_data(NULL, "dock", dock_station_count, - &ds, sizeof(ds)); + memset(&pdevinfo, 0, sizeof(pdevinfo)); + pdevinfo.name = "dock"; + pdevinfo.id = dock_station_count; + pdevinfo.acpi_node.companion = adev; + pdevinfo.data = &ds; + pdevinfo.size_data = sizeof(ds); + dd = platform_device_register_full(&pdevinfo); if (IS_ERR(dd)) return; -- cgit v1.2.3 From 51572753924cbd99d13de1ac59b0499797257649 Mon Sep 17 00:00:00 2001 From: Tomasz Nowicki Date: Mon, 10 Feb 2014 17:23:36 +0100 Subject: ACPI / APEI: Remove X86 redundant dependency for APEI GHES. ACPI_APEI already depends on X86, so there is no need to define such dependency for ACPI_APEI_GHES (Generic Hardware Error Source) again. Signed-off-by: Tomasz Nowicki Acked-by: Borislav Petkov Signed-off-by: Rafael J. Wysocki --- drivers/acpi/apei/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index 3650b2183227..c4dac7150960 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -12,7 +12,7 @@ config ACPI_APEI config ACPI_APEI_GHES bool "APEI Generic Hardware Error Source" - depends on ACPI_APEI && X86 + depends on ACPI_APEI select ACPI_HED select IRQ_WORK select GENERIC_ALLOCATOR -- cgit v1.2.3 From 7919010c4224e07b871f3b5513d245cc029fcd67 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 18 Feb 2014 10:57:00 +0100 Subject: ACPI: Remove Kconfig symbol ACPI_PROCFS Nothing cares about ACPI_PROCFS. This has been the case since v2.6.38. This Kconfig symbol serves no purpose and its help text is now misleading. It can safely be removed. If this symbol would be needed again in the future it can be readded in a commit that adds code that actually uses it. Signed-off-by: Paul Bolle Signed-off-by: Rafael J. Wysocki --- arch/ia64/configs/generic_defconfig | 1 - arch/ia64/configs/tiger_defconfig | 1 - arch/ia64/configs/zx1_defconfig | 1 - arch/x86/configs/i386_defconfig | 1 - arch/x86/configs/x86_64_defconfig | 1 - drivers/acpi/Kconfig | 13 ------------- 6 files changed, 18 deletions(-) diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig index efbd2929aeb7..f4a0daa556eb 100644 --- a/arch/ia64/configs/generic_defconfig +++ b/arch/ia64/configs/generic_defconfig @@ -25,7 +25,6 @@ CONFIG_KEXEC=y CONFIG_CRASH_DUMP=y CONFIG_EFI_VARS=y CONFIG_BINFMT_MISC=m -CONFIG_ACPI_PROCFS=y CONFIG_ACPI_BUTTON=m CONFIG_ACPI_FAN=m CONFIG_ACPI_DOCK=y diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig index 0f4e9e41f130..0fed9ae5a42a 100644 --- a/arch/ia64/configs/tiger_defconfig +++ b/arch/ia64/configs/tiger_defconfig @@ -26,7 +26,6 @@ CONFIG_IA64_PALINFO=y CONFIG_KEXEC=y CONFIG_EFI_VARS=y CONFIG_BINFMT_MISC=m -CONFIG_ACPI_PROCFS=y CONFIG_ACPI_BUTTON=m CONFIG_ACPI_FAN=m CONFIG_ACPI_PROCESSOR=m diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig index fc7aba07c2b4..54bc72eda30d 100644 --- a/arch/ia64/configs/zx1_defconfig +++ b/arch/ia64/configs/zx1_defconfig @@ -16,7 +16,6 @@ CONFIG_IA64_PALINFO=y CONFIG_CRASH_DUMP=y CONFIG_EFI_VARS=y CONFIG_BINFMT_MISC=y -CONFIG_ACPI_PROCFS=y CONFIG_HOTPLUG_PCI=y CONFIG_HOTPLUG_PCI_ACPI=y CONFIG_PACKET=y diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig index a7fef2621cc9..619e7f7426c6 100644 --- a/arch/x86/configs/i386_defconfig +++ b/arch/x86/configs/i386_defconfig @@ -60,7 +60,6 @@ CONFIG_CRASH_DUMP=y CONFIG_HIBERNATION=y CONFIG_PM_DEBUG=y CONFIG_PM_TRACE_RTC=y -CONFIG_ACPI_PROCFS=y CONFIG_ACPI_DOCK=y CONFIG_CPU_FREQ=y # CONFIG_CPU_FREQ_STAT is not set diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig index c1119d4c1281..6181c69b786b 100644 --- a/arch/x86/configs/x86_64_defconfig +++ b/arch/x86/configs/x86_64_defconfig @@ -58,7 +58,6 @@ CONFIG_CRASH_DUMP=y CONFIG_HIBERNATION=y CONFIG_PM_DEBUG=y CONFIG_PM_TRACE_RTC=y -CONFIG_ACPI_PROCFS=y CONFIG_ACPI_DOCK=y CONFIG_CPU_FREQ=y # CONFIG_CPU_FREQ_STAT is not set diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 9fd6a7a124c0..f60f11d7e489 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -43,19 +43,6 @@ config ACPI_SLEEP depends on SUSPEND || HIBERNATION default y -config ACPI_PROCFS - bool "Deprecated /proc/acpi files" - depends on PROC_FS - help - For backwards compatibility, this option allows - deprecated /proc/acpi/ files to exist, even when - they have been replaced by functions in /sys. - - This option has no effect on /proc/acpi/ files - and functions which do not yet exist in /sys. - - Say N to delete /proc/acpi/ files that have moved to /sys/ - config ACPI_EC_DEBUGFS tristate "EC read/write access through /sys/kernel/debug/ec" default n -- cgit v1.2.3 From 1606484ec1f5ee3315a4ff4a80504c3908c60023 Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Sat, 8 Feb 2014 20:46:26 +0800 Subject: ACPI / processor: Fix acpi_processor_eval_pdc() return value type The return value type of acpi_processor_eval_pdc() should be 'acpi_status' but is defined as 'int', so fix it. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index a4eea9a508d3..0bbf5289abeb 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -323,7 +323,7 @@ static struct acpi_object_list *acpi_processor_alloc_pdc(void) * _PDC is required for a BIOS-OS handshake for most of the newer * ACPI processor features. */ -static int +static acpi_status acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) { acpi_status status = AE_OK; -- cgit v1.2.3 From 52056925f4fad39d2adbd9c5dc00c699efa3f604 Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Sun, 9 Feb 2014 17:12:27 +0800 Subject: ACPI / processor: Use ACPI_PROCESSOR_DEVICE_HID instead of "ACPI0007" Replace "ACPI0007" with ACPI_PROCESSOR_DEVICE_HID to improve code readability. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 0bbf5289abeb..7c50a4c6c657 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -390,5 +390,5 @@ void __init acpi_early_processor_set_pdc(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); - acpi_get_devices("ACPI0007", early_init_pdc, NULL, NULL); + acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID, early_init_pdc, NULL, NULL); } -- cgit v1.2.3 From 2c4fa0033ad5dc0ca291528cfa8b23debaf2e32e Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Wed, 19 Feb 2014 00:23:54 +0800 Subject: ACPI / processor: Build idle_boot_override on x86 and ia64 idle_boot_override depends on x86 and ia64 now and it is not clear whether or not it will be used on ARM or ARM64, so put the DMI blacklist setting it in processor_core.c into a #if block so that it is built for CONFIG_X86 or CONFIG_IA64 only to allow processor_core.c to be compiled for ARM64. Signed-off-by: Hanjun Guo [rjw: Subject and changelog] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_core.c | 47 ++++++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 7c50a4c6c657..4d91b32423a9 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -19,24 +19,6 @@ #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_core"); -static int __init set_no_mwait(const struct dmi_system_id *id) -{ - printk(KERN_NOTICE PREFIX "%s detected - " - "disabling mwait for CPU C-states\n", id->ident); - boot_option_idle_override = IDLE_NOMWAIT; - return 0; -} - -static struct dmi_system_id processor_idle_dmi_table[] __initdata = { - { - set_no_mwait, "Extensa 5220", { - DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), - DMI_MATCH(DMI_SYS_VENDOR, "Acer"), - DMI_MATCH(DMI_PRODUCT_VERSION, "0100"), - DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL}, - {}, -}; - static int map_lapic_id(struct acpi_subtable_header *entry, u32 acpi_id, int *apic_id) { @@ -379,13 +361,40 @@ early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; } -void __init acpi_early_processor_set_pdc(void) +#if defined(CONFIG_X86) || defined(CONFIG_IA64) +static int __init set_no_mwait(const struct dmi_system_id *id) +{ + pr_notice(PREFIX "%s detected - disabling mwait for CPU C-states\n", + id->ident); + boot_option_idle_override = IDLE_NOMWAIT; + return 0; +} + +static struct dmi_system_id processor_idle_dmi_table[] __initdata = { + { + set_no_mwait, "Extensa 5220", { + DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_VERSION, "0100"), + DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL}, + {}, +}; + +static void __init processor_dmi_check(void) { /* * Check whether the system is DMI table. If yes, OSPM * should not use mwait for CPU-states. */ dmi_check_system(processor_idle_dmi_table); +} +#else +static inline void processor_dmi_check(void) {} +#endif + +void __init acpi_early_processor_set_pdc(void) +{ + processor_dmi_check(); acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, -- cgit v1.2.3 From df86f5df79d8c2035a88fb985925e49475c0cdca Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Wed, 19 Feb 2014 00:23:56 +0800 Subject: ACPI / processor: Make it possible to get APIC ID via GIC Introduce a new function map_gic_id() to allow APIC IDs to be obtained from the GIC Structure introduced by ACPI 5. Signed-off-by: Hanjun Guo [rjw: Subject and changelog] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_core.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 4d91b32423a9..f1dd404463aa 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -71,6 +71,28 @@ static int map_lsapic_id(struct acpi_subtable_header *entry, return 0; } +static int map_gic_id(struct acpi_subtable_header *entry, + int device_declaration, u32 acpi_id, int *apic_id) +{ + struct acpi_madt_generic_interrupt *gic = + (struct acpi_madt_generic_interrupt *)entry; + + if (!(gic->flags & ACPI_MADT_ENABLED)) + return -ENODEV; + + /* + * In the GIC interrupt model, logical processors are + * required to have a Processor Device object in the DSDT, + * so we should check device_declaration here + */ + if (device_declaration && (gic->uid == acpi_id)) { + *apic_id = gic->gic_id; + return 0; + } + + return -EINVAL; +} + static int map_madt_entry(int type, u32 acpi_id) { unsigned long madt_end, entry; @@ -106,6 +128,9 @@ static int map_madt_entry(int type, u32 acpi_id) } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) { if (!map_lsapic_id(header, type, acpi_id, &apic_id)) break; + } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) { + if (!map_gic_id(header, type, acpi_id, &apic_id)) + break; } entry += header->length; } @@ -136,6 +161,8 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id) map_lapic_id(header, acpi_id, &apic_id); } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) { map_lsapic_id(header, type, acpi_id, &apic_id); + } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) { + map_gic_id(header, type, acpi_id, &apic_id); } exit: -- cgit v1.2.3 From 328281b1cda4dfef5b86c255b0aba8a8a96e0dad Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Wed, 19 Feb 2014 00:23:57 +0800 Subject: ACPI: Move BAD_MADT_ENTRY() to linux/acpi.h BAD_MADT_ENTRY() is arch independent and will be used for all architectures which parse MADT, so move it to linux/acpi.h to reduce code duplication. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- arch/ia64/kernel/acpi.c | 4 ---- arch/x86/kernel/acpi/boot.c | 4 ---- include/linux/acpi.h | 4 ++++ 3 files changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 07d209c9507f..467497ade45f 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -54,10 +54,6 @@ #include #include -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) - #define PREFIX "ACPI: " unsigned int acpi_cpei_override; diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 1dac94265b59..123f9e37eee4 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -53,10 +53,6 @@ EXPORT_SYMBOL(acpi_disabled); # include #endif /* X86 */ -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) - #define PREFIX "ACPI: " int acpi_noirq; /* skip ACPI IRQ initialization */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 1151a1dcfe41..6a15dddbaa09 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -108,6 +108,10 @@ static inline void acpi_initrd_override(void *data, size_t size) } #endif +#define BAD_MADT_ENTRY(entry, end) ( \ + (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ + ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) + char * __acpi_map_table (unsigned long phys_addr, unsigned long size); void __acpi_unmap_table(char *map, unsigned long size); int early_acpi_boot_init(void); -- cgit v1.2.3 From e1c7481797542f4d2039d5a458ef80603298ad78 Mon Sep 17 00:00:00 2001 From: "Chew, Chiau Ee" Date: Wed, 19 Feb 2014 02:24:29 +0800 Subject: ACPI / LPSS: Add Intel BayTrail ACPI mode PWM Intel BayTrail LPSS consists of two PWM controllers which can be enumerated from ACPI namespace. This change will cause platform device objects to be created for Intel BayTrail PWM controllers which will allow the pwm-lpss driver to bind to them and handle those devices. Signed-off-by: Chew, Chiau Ee Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 6745fe137b9e..8c2bae980faf 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -102,6 +102,16 @@ static struct lpss_device_desc lpt_sdio_dev_desc = { .ltr_required = true, }; +static struct lpss_shared_clock pwm_clock = { + .name = "pwm_clk", + .rate = 25000000, +}; + +static struct lpss_device_desc byt_pwm_dev_desc = { + .clk_required = true, + .shared_clock = &pwm_clock, +}; + static struct lpss_shared_clock uart_clock = { .name = "uart_clk", .rate = 44236800, @@ -157,6 +167,7 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "INT33C7", }, /* BayTrail LPSS devices */ + { "80860F09", (unsigned long)&byt_pwm_dev_desc }, { "80860F0A", (unsigned long)&byt_uart_dev_desc }, { "80860F0E", (unsigned long)&byt_spi_dev_desc }, { "80860F14", (unsigned long)&byt_sdio_dev_desc }, -- cgit v1.2.3 From 3d2699bc179a10eee7d2aa1db50f822be01636f7 Mon Sep 17 00:00:00 2001 From: "Liu, Chuansheng" Date: Tue, 18 Feb 2014 10:28:44 +0800 Subject: PM / sleep: Two flags for async suspend_noirq and suspend_late The patch is a helper adding two new flags for implementing async threads for suspend_noirq and suspend_late. Signed-off-by: Chuansheng Liu Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 24 ++++++++++++++++++++++-- include/linux/pm.h | 2 ++ 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 1b41fca3d65a..00c53eb8ebca 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -91,6 +91,8 @@ void device_pm_sleep_init(struct device *dev) { dev->power.is_prepared = false; dev->power.is_suspended = false; + dev->power.is_noirq_suspended = false; + dev->power.is_late_suspended = false; init_completion(&dev->power.completion); complete_all(&dev->power.completion); dev->power.wakeup = NULL; @@ -479,6 +481,9 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) if (dev->power.syscore) goto Out; + if (!dev->power.is_noirq_suspended) + goto Out; + if (dev->pm_domain) { info = "noirq power domain "; callback = pm_noirq_op(&dev->pm_domain->ops, state); @@ -499,6 +504,7 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) } error = dpm_run_callback(callback, dev, state, info); + dev->power.is_noirq_suspended = false; Out: TRACE_RESUME(error); @@ -561,6 +567,9 @@ static int device_resume_early(struct device *dev, pm_message_t state) if (dev->power.syscore) goto Out; + if (!dev->power.is_late_suspended) + goto Out; + if (dev->pm_domain) { info = "early power domain "; callback = pm_late_early_op(&dev->pm_domain->ops, state); @@ -581,6 +590,7 @@ static int device_resume_early(struct device *dev, pm_message_t state) } error = dpm_run_callback(callback, dev, state, info); + dev->power.is_late_suspended = false; Out: TRACE_RESUME(error); @@ -917,6 +927,7 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) { pm_callback_t callback = NULL; char *info = NULL; + int error; if (dev->power.syscore) return 0; @@ -940,7 +951,11 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) callback = pm_noirq_op(dev->driver->pm, state); } - return dpm_run_callback(callback, dev, state, info); + error = dpm_run_callback(callback, dev, state, info); + if (!error) + dev->power.is_noirq_suspended = true; + + return error; } /** @@ -1003,6 +1018,7 @@ static int device_suspend_late(struct device *dev, pm_message_t state) { pm_callback_t callback = NULL; char *info = NULL; + int error; __pm_runtime_disable(dev, false); @@ -1028,7 +1044,11 @@ static int device_suspend_late(struct device *dev, pm_message_t state) callback = pm_late_early_op(dev->driver->pm, state); } - return dpm_run_callback(callback, dev, state, info); + error = dpm_run_callback(callback, dev, state, info); + if (!error) + dev->power.is_late_suspended = true; + + return error; } /** diff --git a/include/linux/pm.h b/include/linux/pm.h index 8c6583a53a06..f23a4f1c1bfb 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -542,6 +542,8 @@ struct dev_pm_info { unsigned int async_suspend:1; bool is_prepared:1; /* Owned by the PM core */ bool is_suspended:1; /* Ditto */ + bool is_noirq_suspended:1; + bool is_late_suspended:1; bool ignore_children:1; bool early_init:1; /* Owned by the PM core */ spinlock_t lock; -- cgit v1.2.3 From 76569faa62c46382e080c3e190c66e19515aae1c Mon Sep 17 00:00:00 2001 From: "Liu, Chuansheng" Date: Tue, 18 Feb 2014 10:28:45 +0800 Subject: PM / sleep: Asynchronous threads for resume_noirq In analogy with commits 5af84b82701a and 97df8c12995, using asynchronous threads can improve the overall resume_noirq time significantly. One typical case is: In resume_noirq phase and for the PCI devices, the function pci_pm_resume_noirq() will be called, and there is one d3_delay (10ms) at least. With the way of asynchronous threads, we just need wait d3_delay time once in parallel for each calling, which saves much time to resume quickly. Signed-off-by: Chuansheng Liu Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 66 +++++++++++++++++++++++++++++++++++------------ 1 file changed, 50 insertions(+), 16 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 00c53eb8ebca..ea3f1d2c28cf 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -469,7 +469,7 @@ static void dpm_watchdog_clear(struct dpm_watchdog *wd) * The driver of @dev will not receive interrupts while this function is being * executed. */ -static int device_resume_noirq(struct device *dev, pm_message_t state) +static int device_resume_noirq(struct device *dev, pm_message_t state, bool async) { pm_callback_t callback = NULL; char *info = NULL; @@ -484,6 +484,8 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) if (!dev->power.is_noirq_suspended) goto Out; + dpm_wait(dev->parent, async); + if (dev->pm_domain) { info = "noirq power domain "; callback = pm_noirq_op(&dev->pm_domain->ops, state); @@ -507,10 +509,29 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) dev->power.is_noirq_suspended = false; Out: + complete_all(&dev->power.completion); TRACE_RESUME(error); return error; } +static bool is_async(struct device *dev) +{ + return dev->power.async_suspend && pm_async_enabled + && !pm_trace_is_enabled(); +} + +static void async_resume_noirq(void *data, async_cookie_t cookie) +{ + struct device *dev = (struct device *)data; + int error; + + error = device_resume_noirq(dev, pm_transition, true); + if (error) + pm_dev_err(dev, pm_transition, " async", error); + + put_device(dev); +} + /** * dpm_resume_noirq - Execute "noirq resume" callbacks for all devices. * @state: PM transition of the system being carried out. @@ -520,29 +541,48 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) */ static void dpm_resume_noirq(pm_message_t state) { + struct device *dev; ktime_t starttime = ktime_get(); mutex_lock(&dpm_list_mtx); - while (!list_empty(&dpm_noirq_list)) { - struct device *dev = to_device(dpm_noirq_list.next); - int error; + pm_transition = state; + + /* + * Advanced the async threads upfront, + * in case the starting of async threads is + * delayed by non-async resuming devices. + */ + list_for_each_entry(dev, &dpm_noirq_list, power.entry) { + reinit_completion(&dev->power.completion); + if (is_async(dev)) { + get_device(dev); + async_schedule(async_resume_noirq, dev); + } + } + while (!list_empty(&dpm_noirq_list)) { + dev = to_device(dpm_noirq_list.next); get_device(dev); list_move_tail(&dev->power.entry, &dpm_late_early_list); mutex_unlock(&dpm_list_mtx); - error = device_resume_noirq(dev, state); - if (error) { - suspend_stats.failed_resume_noirq++; - dpm_save_failed_step(SUSPEND_RESUME_NOIRQ); - dpm_save_failed_dev(dev_name(dev)); - pm_dev_err(dev, state, " noirq", error); + if (!is_async(dev)) { + int error; + + error = device_resume_noirq(dev, state, false); + if (error) { + suspend_stats.failed_resume_noirq++; + dpm_save_failed_step(SUSPEND_RESUME_NOIRQ); + dpm_save_failed_dev(dev_name(dev)); + pm_dev_err(dev, state, " noirq", error); + } } mutex_lock(&dpm_list_mtx); put_device(dev); } mutex_unlock(&dpm_list_mtx); + async_synchronize_full(); dpm_show_time(starttime, state, "noirq"); resume_device_irqs(); cpuidle_resume(); @@ -742,12 +782,6 @@ static void async_resume(void *data, async_cookie_t cookie) put_device(dev); } -static bool is_async(struct device *dev) -{ - return dev->power.async_suspend && pm_async_enabled - && !pm_trace_is_enabled(); -} - /** * dpm_resume - Execute "resume" callbacks for non-sysdev devices. * @state: PM transition of the system being carried out. -- cgit v1.2.3 From 9e5e7910df824ba02aedd2b5d2ca556426ea6d0b Mon Sep 17 00:00:00 2001 From: "Liu, Chuansheng" Date: Tue, 18 Feb 2014 10:28:46 +0800 Subject: PM / sleep: Asynchronous threads for resume_early In analogy with commits 5af84b82701a and 97df8c12995, using asynchronous threads can improve the overall resume_early time significantly. This patch is for resume_early phase. Signed-off-by: Chuansheng Liu Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 55 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 44 insertions(+), 11 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index ea3f1d2c28cf..6d41165701c4 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -595,7 +595,7 @@ static void dpm_resume_noirq(pm_message_t state) * * Runtime PM is disabled for @dev while this function is being executed. */ -static int device_resume_early(struct device *dev, pm_message_t state) +static int device_resume_early(struct device *dev, pm_message_t state, bool async) { pm_callback_t callback = NULL; char *info = NULL; @@ -610,6 +610,8 @@ static int device_resume_early(struct device *dev, pm_message_t state) if (!dev->power.is_late_suspended) goto Out; + dpm_wait(dev->parent, async); + if (dev->pm_domain) { info = "early power domain "; callback = pm_late_early_op(&dev->pm_domain->ops, state); @@ -636,38 +638,69 @@ static int device_resume_early(struct device *dev, pm_message_t state) TRACE_RESUME(error); pm_runtime_enable(dev); + complete_all(&dev->power.completion); return error; } +static void async_resume_early(void *data, async_cookie_t cookie) +{ + struct device *dev = (struct device *)data; + int error; + + error = device_resume_early(dev, pm_transition, true); + if (error) + pm_dev_err(dev, pm_transition, " async", error); + + put_device(dev); +} + /** * dpm_resume_early - Execute "early resume" callbacks for all devices. * @state: PM transition of the system being carried out. */ static void dpm_resume_early(pm_message_t state) { + struct device *dev; ktime_t starttime = ktime_get(); mutex_lock(&dpm_list_mtx); - while (!list_empty(&dpm_late_early_list)) { - struct device *dev = to_device(dpm_late_early_list.next); - int error; + pm_transition = state; + + /* + * Advanced the async threads upfront, + * in case the starting of async threads is + * delayed by non-async resuming devices. + */ + list_for_each_entry(dev, &dpm_late_early_list, power.entry) { + reinit_completion(&dev->power.completion); + if (is_async(dev)) { + get_device(dev); + async_schedule(async_resume_early, dev); + } + } + while (!list_empty(&dpm_late_early_list)) { + dev = to_device(dpm_late_early_list.next); get_device(dev); list_move_tail(&dev->power.entry, &dpm_suspended_list); mutex_unlock(&dpm_list_mtx); - error = device_resume_early(dev, state); - if (error) { - suspend_stats.failed_resume_early++; - dpm_save_failed_step(SUSPEND_RESUME_EARLY); - dpm_save_failed_dev(dev_name(dev)); - pm_dev_err(dev, state, " early", error); - } + if (!is_async(dev)) { + int error; + error = device_resume_early(dev, state, false); + if (error) { + suspend_stats.failed_resume_early++; + dpm_save_failed_step(SUSPEND_RESUME_EARLY); + dpm_save_failed_dev(dev_name(dev)); + pm_dev_err(dev, state, " early", error); + } + } mutex_lock(&dpm_list_mtx); put_device(dev); } mutex_unlock(&dpm_list_mtx); + async_synchronize_full(); dpm_show_time(starttime, state, "early"); } -- cgit v1.2.3 From 28b6fd6e37792b16a56d324841bdb20ab78e4522 Mon Sep 17 00:00:00 2001 From: "Liu, Chuansheng" Date: Tue, 18 Feb 2014 10:28:47 +0800 Subject: PM / sleep: Asynchronous threads for suspend_noirq In analogy with commits 5af84b82701a and 97df8c12995, using asynchronous threads can improve the overall suspend_noirq time significantly. This patch is for suspend_noirq phase. Signed-off-by: Chuansheng Liu Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 68 +++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 57 insertions(+), 11 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 6d41165701c4..9335b326d1f5 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -990,14 +990,24 @@ static pm_message_t resume_event(pm_message_t sleep_state) * The driver of @dev will not receive interrupts while this function is being * executed. */ -static int device_suspend_noirq(struct device *dev, pm_message_t state) +static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool async) { pm_callback_t callback = NULL; char *info = NULL; - int error; + int error = 0; + + if (async_error) + goto Complete; + + if (pm_wakeup_pending()) { + async_error = -EBUSY; + goto Complete; + } if (dev->power.syscore) - return 0; + goto Complete; + + dpm_wait_for_children(dev, async); if (dev->pm_domain) { info = "noirq power domain "; @@ -1021,10 +1031,40 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) error = dpm_run_callback(callback, dev, state, info); if (!error) dev->power.is_noirq_suspended = true; + else + async_error = error; +Complete: + complete_all(&dev->power.completion); return error; } +static void async_suspend_noirq(void *data, async_cookie_t cookie) +{ + struct device *dev = (struct device *)data; + int error; + + error = __device_suspend_noirq(dev, pm_transition, true); + if (error) { + dpm_save_failed_dev(dev_name(dev)); + pm_dev_err(dev, pm_transition, " async", error); + } + + put_device(dev); +} + +static int device_suspend_noirq(struct device *dev) +{ + reinit_completion(&dev->power.completion); + + if (pm_async_enabled && dev->power.async_suspend) { + get_device(dev); + async_schedule(async_suspend_noirq, dev); + return 0; + } + return __device_suspend_noirq(dev, pm_transition, false); +} + /** * dpm_suspend_noirq - Execute "noirq suspend" callbacks for all devices. * @state: PM transition of the system being carried out. @@ -1040,19 +1080,20 @@ static int dpm_suspend_noirq(pm_message_t state) cpuidle_pause(); suspend_device_irqs(); mutex_lock(&dpm_list_mtx); + pm_transition = state; + async_error = 0; + while (!list_empty(&dpm_late_early_list)) { struct device *dev = to_device(dpm_late_early_list.prev); get_device(dev); mutex_unlock(&dpm_list_mtx); - error = device_suspend_noirq(dev, state); + error = device_suspend_noirq(dev); mutex_lock(&dpm_list_mtx); if (error) { pm_dev_err(dev, state, " noirq", error); - suspend_stats.failed_suspend_noirq++; - dpm_save_failed_step(SUSPEND_SUSPEND_NOIRQ); dpm_save_failed_dev(dev_name(dev)); put_device(dev); break; @@ -1061,16 +1102,21 @@ static int dpm_suspend_noirq(pm_message_t state) list_move(&dev->power.entry, &dpm_noirq_list); put_device(dev); - if (pm_wakeup_pending()) { - error = -EBUSY; + if (async_error) break; - } } mutex_unlock(&dpm_list_mtx); - if (error) + async_synchronize_full(); + if (!error) + error = async_error; + + if (error) { + suspend_stats.failed_suspend_noirq++; + dpm_save_failed_step(SUSPEND_SUSPEND_NOIRQ); dpm_resume_noirq(resume_event(state)); - else + } else { dpm_show_time(starttime, state, "noirq"); + } return error; } -- cgit v1.2.3 From de377b3972729f00ee236ae4a97393e282ffe391 Mon Sep 17 00:00:00 2001 From: "Liu, Chuansheng" Date: Tue, 18 Feb 2014 10:28:48 +0800 Subject: PM / sleep: Asynchronous threads for suspend_late In analogy with commits 5af84b82701a and 97df8c12995, using asynchronous threads can improve the overall suspend_late time significantly. This patch is for suspend_late phase. Signed-off-by: Chuansheng Liu Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 66 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 54 insertions(+), 12 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 9335b326d1f5..42355e442a5d 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1127,16 +1127,26 @@ static int dpm_suspend_noirq(pm_message_t state) * * Runtime PM is disabled for @dev while this function is being executed. */ -static int device_suspend_late(struct device *dev, pm_message_t state) +static int __device_suspend_late(struct device *dev, pm_message_t state, bool async) { pm_callback_t callback = NULL; char *info = NULL; - int error; + int error = 0; __pm_runtime_disable(dev, false); + if (async_error) + goto Complete; + + if (pm_wakeup_pending()) { + async_error = -EBUSY; + goto Complete; + } + if (dev->power.syscore) - return 0; + goto Complete; + + dpm_wait_for_children(dev, async); if (dev->pm_domain) { info = "late power domain "; @@ -1160,10 +1170,40 @@ static int device_suspend_late(struct device *dev, pm_message_t state) error = dpm_run_callback(callback, dev, state, info); if (!error) dev->power.is_late_suspended = true; + else + async_error = error; +Complete: + complete_all(&dev->power.completion); return error; } +static void async_suspend_late(void *data, async_cookie_t cookie) +{ + struct device *dev = (struct device *)data; + int error; + + error = __device_suspend_late(dev, pm_transition, true); + if (error) { + dpm_save_failed_dev(dev_name(dev)); + pm_dev_err(dev, pm_transition, " async", error); + } + put_device(dev); +} + +static int device_suspend_late(struct device *dev) +{ + reinit_completion(&dev->power.completion); + + if (pm_async_enabled && dev->power.async_suspend) { + get_device(dev); + async_schedule(async_suspend_late, dev); + return 0; + } + + return __device_suspend_late(dev, pm_transition, false); +} + /** * dpm_suspend_late - Execute "late suspend" callbacks for all devices. * @state: PM transition of the system being carried out. @@ -1174,19 +1214,20 @@ static int dpm_suspend_late(pm_message_t state) int error = 0; mutex_lock(&dpm_list_mtx); + pm_transition = state; + async_error = 0; + while (!list_empty(&dpm_suspended_list)) { struct device *dev = to_device(dpm_suspended_list.prev); get_device(dev); mutex_unlock(&dpm_list_mtx); - error = device_suspend_late(dev, state); + error = device_suspend_late(dev); mutex_lock(&dpm_list_mtx); if (error) { pm_dev_err(dev, state, " late", error); - suspend_stats.failed_suspend_late++; - dpm_save_failed_step(SUSPEND_SUSPEND_LATE); dpm_save_failed_dev(dev_name(dev)); put_device(dev); break; @@ -1195,17 +1236,18 @@ static int dpm_suspend_late(pm_message_t state) list_move(&dev->power.entry, &dpm_late_early_list); put_device(dev); - if (pm_wakeup_pending()) { - error = -EBUSY; + if (async_error) break; - } } mutex_unlock(&dpm_list_mtx); - if (error) + async_synchronize_full(); + if (error) { + suspend_stats.failed_suspend_late++; + dpm_save_failed_step(SUSPEND_SUSPEND_LATE); dpm_resume_early(resume_event(state)); - else + } else { dpm_show_time(starttime, state, "late"); - + } return error; } -- cgit v1.2.3 From c1aaae673f68448253905bd9af6c6f9d31a7769a Mon Sep 17 00:00:00 2001 From: Tomasz Nowicki Date: Thu, 20 Feb 2014 14:27:46 +0100 Subject: ACPI / PCI: Do not call ISA-specific code if ISA is not supported This commit moves ISA-specific code to separate function and makes that function depend on CONFIG_{E}ISA so that we do not have to maintain acpi_isa_irq_to_gsi() function for architectures which do not support ISA. Signed-off-by: Tomasz Nowicki Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pci_irq.c | 36 +++++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 361b40c10c3f..9c62340c2360 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -370,6 +370,30 @@ static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin) return NULL; } +#if IS_ENABLED(CONFIG_ISA) || IS_ENABLED(CONFIG_EISA) +static int acpi_isa_register_gsi(struct pci_dev *dev) +{ + u32 dev_gsi; + + /* Interrupt Line values above 0xF are forbidden */ + if (dev->irq > 0 && (dev->irq <= 0xF) && + (acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) { + dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ %d\n", + pin_name(dev->pin), dev->irq); + acpi_register_gsi(&dev->dev, dev_gsi, + ACPI_LEVEL_SENSITIVE, + ACPI_ACTIVE_LOW); + return 0; + } + return -EINVAL; +} +#else +static inline int acpi_isa_register_gsi(struct pci_dev *dev) +{ + return -ENODEV; +} +#endif + int acpi_pci_irq_enable(struct pci_dev *dev) { struct acpi_prt_entry *entry; @@ -416,19 +440,9 @@ int acpi_pci_irq_enable(struct pci_dev *dev) * driver reported one, then use it. Exit in any case. */ if (gsi < 0) { - u32 dev_gsi; - /* Interrupt Line values above 0xF are forbidden */ - if (dev->irq > 0 && (dev->irq <= 0xF) && - (acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) { - dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ %d\n", - pin_name(pin), dev->irq); - acpi_register_gsi(&dev->dev, dev_gsi, - ACPI_LEVEL_SENSITIVE, - ACPI_ACTIVE_LOW); - } else { + if (acpi_isa_register_gsi(dev)) dev_warn(&dev->dev, "PCI INT %c: no GSI\n", pin_name(pin)); - } kfree(entry); return 0; -- cgit v1.2.3 From b9b8515f34fa182e26ee934c3a83f24e2d8bd846 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Wed, 19 Feb 2014 12:16:48 +0800 Subject: ACPI / fan: do nothing in suspend and poweroff callback We put fans to full speed in acpi_fan_suspend(), but that is only needed in the hibernation case when we are generating hibernation image, so this patch removes that when we are about to suspend or poweroff. References: http://www.spinics.net/lists/linux-acpi/msg48636.html Signed-off-by: Aaron Lu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/fan.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 09e423f3d8ad..8acf53e62966 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -55,11 +55,16 @@ MODULE_DEVICE_TABLE(acpi, fan_device_ids); #ifdef CONFIG_PM_SLEEP static int acpi_fan_suspend(struct device *dev); static int acpi_fan_resume(struct device *dev); +static struct dev_pm_ops acpi_fan_pm = { + .resume = acpi_fan_resume, + .freeze = acpi_fan_suspend, + .thaw = acpi_fan_resume, + .restore = acpi_fan_resume, +}; +#define FAN_PM_OPS_PTR (&acpi_fan_pm) #else -#define acpi_fan_suspend NULL -#define acpi_fan_resume NULL +#define FAN_PM_OPS_PTR NULL #endif -static SIMPLE_DEV_PM_OPS(acpi_fan_pm, acpi_fan_suspend, acpi_fan_resume); static struct acpi_driver acpi_fan_driver = { .name = "fan", @@ -69,7 +74,7 @@ static struct acpi_driver acpi_fan_driver = { .add = acpi_fan_add, .remove = acpi_fan_remove, }, - .drv.pm = &acpi_fan_pm, + .drv.pm = FAN_PM_OPS_PTR, }; /* thermal cooling device callbacks */ -- cgit v1.2.3 From 05730c1952787faa422ea2898634a1f9cdb61161 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 19 Feb 2014 14:02:15 +0800 Subject: ACPI: rename acpi_evaluate_hotplug_ost() to acpi_evaluate_ost() Rename acpi_evaluate_hotplug_ost() to acpi_evaluate_ost() for later resue. Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/utils.c | 14 ++++---------- include/acpi/acpi_bus.h | 10 +++++++++- 2 files changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 85e3b612bdc0..19d016974080 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -433,17 +433,15 @@ EXPORT_SYMBOL(acpi_get_physical_device_location); * When the platform does not support _OST, this function has no effect. */ acpi_status -acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event, - u32 status_code, struct acpi_buffer *status_buf) +acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, + struct acpi_buffer *status_buf) { -#ifdef ACPI_HOTPLUG_OST union acpi_object params[3] = { {.type = ACPI_TYPE_INTEGER,}, {.type = ACPI_TYPE_INTEGER,}, {.type = ACPI_TYPE_BUFFER,} }; struct acpi_object_list arg_list = {3, params}; - acpi_status status; params[0].integer.value = source_event; params[1].integer.value = status_code; @@ -455,13 +453,9 @@ acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event, params[2].buffer.length = 0; } - status = acpi_evaluate_object(handle, "_OST", &arg_list, NULL); - return status; -#else - return AE_OK; -#endif + return acpi_evaluate_object(handle, "_OST", &arg_list, NULL); } -EXPORT_SYMBOL(acpi_evaluate_hotplug_ost); +EXPORT_SYMBOL(acpi_evaluate_ost); /** * acpi_handle_printk: Print message with ACPI prefix and object path diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8256eb4ad057..adef502cb8f1 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -49,8 +49,16 @@ acpi_evaluate_reference(acpi_handle handle, struct acpi_object_list *arguments, struct acpi_handle_list *list); acpi_status +acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, + struct acpi_buffer *status_buf); +#ifdef ACPI_HOTPLUG_OST +#define acpi_evaluate_hotplug_ost acpi_evaluate_ost +#else +static inline acpi_status acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event, - u32 status_code, struct acpi_buffer *status_buf); + u32 status_code, struct acpi_buffer *status_buf) +{ return AE_OK; } +#endif acpi_status acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); -- cgit v1.2.3 From 8b296d9412a087c1e2191d3e7448c76d9498714f Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 19 Feb 2014 14:02:16 +0800 Subject: ACPI / PAD: use acpi_evaluate_ost() to replace open-coded version Use public function acpi_evaluate_ost() to replace open-coded version of evaluating ACPI _OST method. Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_pad.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index df96a0fe4890..37d73024b82e 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -408,28 +408,14 @@ static int acpi_pad_pur(acpi_handle handle) return num; } -/* Notify firmware how many CPUs are idle */ -static void acpi_pad_ost(acpi_handle handle, int stat, - uint32_t idle_cpus) -{ - union acpi_object params[3] = { - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_BUFFER,}, - }; - struct acpi_object_list arg_list = {3, params}; - - params[0].integer.value = ACPI_PROCESSOR_AGGREGATOR_NOTIFY; - params[1].integer.value = stat; - params[2].buffer.length = 4; - params[2].buffer.pointer = (void *)&idle_cpus; - acpi_evaluate_object(handle, "_OST", &arg_list, NULL); -} - static void acpi_pad_handle_notify(acpi_handle handle) { int num_cpus; uint32_t idle_cpus; + struct acpi_buffer param = { + .length = 4, + .pointer = (void *)&idle_cpus, + }; mutex_lock(&isolated_cpus_lock); num_cpus = acpi_pad_pur(handle); @@ -439,7 +425,7 @@ static void acpi_pad_handle_notify(acpi_handle handle) } acpi_pad_idle_cpus(num_cpus); idle_cpus = acpi_pad_idle_cpus_num(); - acpi_pad_ost(handle, 0, idle_cpus); + acpi_evaluate_ost(handle, ACPI_PROCESSOR_AGGREGATOR_NOTIFY, 0, ¶m); mutex_unlock(&isolated_cpus_lock); } -- cgit v1.2.3 From 772c53990fc29a34aec539abc6b2a1edbab8b2b5 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 19 Feb 2014 14:02:17 +0800 Subject: ACPI / PAD / xen: use acpi_evaluate_ost() to replace open-coded version Use public function acpi_evaluate_ost() to replace open-coded version of evaluating ACPI _OST method. Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/xen/xen-acpi-pad.c | 26 +++++++------------------- 1 file changed, 7 insertions(+), 19 deletions(-) diff --git a/drivers/xen/xen-acpi-pad.c b/drivers/xen/xen-acpi-pad.c index 40c4bc06b5fa..f83b754505f8 100644 --- a/drivers/xen/xen-acpi-pad.c +++ b/drivers/xen/xen-acpi-pad.c @@ -77,27 +77,14 @@ static int acpi_pad_pur(acpi_handle handle) return num; } -/* Notify firmware how many CPUs are idle */ -static void acpi_pad_ost(acpi_handle handle, int stat, - uint32_t idle_nums) -{ - union acpi_object params[3] = { - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_BUFFER,}, - }; - struct acpi_object_list arg_list = {3, params}; - - params[0].integer.value = ACPI_PROCESSOR_AGGREGATOR_NOTIFY; - params[1].integer.value = stat; - params[2].buffer.length = 4; - params[2].buffer.pointer = (void *)&idle_nums; - acpi_evaluate_object(handle, "_OST", &arg_list, NULL); -} - static void acpi_pad_handle_notify(acpi_handle handle) { int idle_nums; + struct acpi_buffer param = { + .length = 4, + .pointer = (void *)&idle_nums, + }; + mutex_lock(&xen_cpu_lock); idle_nums = acpi_pad_pur(handle); @@ -109,7 +96,8 @@ static void acpi_pad_handle_notify(acpi_handle handle) idle_nums = xen_acpi_pad_idle_cpus(idle_nums) ?: xen_acpi_pad_idle_cpus_num(); if (idle_nums >= 0) - acpi_pad_ost(handle, 0, idle_nums); + acpi_evaluate_ost(handle, ACPI_PROCESSOR_AGGREGATOR_NOTIFY, + 0, ¶m); mutex_unlock(&xen_cpu_lock); } -- cgit v1.2.3 From 4a6172a4e96f81200de9701c128857b162d1cc6f Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 19 Feb 2014 14:02:18 +0800 Subject: ACPI / processor: use acpi_evaluate_ost() to replace open-coded version Use public function acpi_evaluate_ost() to replace open-coded version of evaluating ACPI _OST method. Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_perflib.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index ff90054f04fd..cfc8aba72f86 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -156,17 +156,9 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr) */ static void acpi_processor_ppc_ost(acpi_handle handle, int status) { - union acpi_object params[2] = { - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_INTEGER,}, - }; - struct acpi_object_list arg_list = {2, params}; - - if (acpi_has_method(handle, "_OST")) { - params[0].integer.value = ACPI_PROCESSOR_NOTIFY_PERFORMANCE; - params[1].integer.value = status; - acpi_evaluate_object(handle, "_OST", &arg_list, NULL); - } + if (acpi_has_method(handle, "_OST")) + acpi_evaluate_ost(handle, ACPI_PROCESSOR_NOTIFY_PERFORMANCE, + status, NULL); } int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag) -- cgit v1.2.3 From ae3caa80a5d532d334c7a4785d74104e3de5a9ae Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 19 Feb 2014 14:02:19 +0800 Subject: ACPI: use device name LNXSYBUS.xx for ACPI \_SB and \_TZ objects Use device name "LNXSYBUS:xx" instead of "device.xx" for ACPI objects \_SB and \_TZ. BTW, the original check of "handle == ACPI_ROOT_OBJECT" in statment "else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT)" is always false because of the code at the begin of that block. if (handle == ACPI_ROOT_OBJECT) { acpi_add_id(pnp, ACPI_SYSTEM_HID); break; } Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 57b053f424d1..62ec4ba7ecef 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1706,6 +1706,20 @@ static bool acpi_ibm_smbus_match(acpi_handle handle) return false; } +static bool acpi_object_is_system_bus(acpi_handle handle) +{ + acpi_handle tmp; + + if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_SB", &tmp)) && + tmp == handle) + return true; + if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_TZ", &tmp)) && + tmp == handle) + return true; + + return false; +} + static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, int device_type) { @@ -1757,8 +1771,10 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, acpi_add_id(pnp, ACPI_DOCK_HID); else if (acpi_ibm_smbus_match(handle)) acpi_add_id(pnp, ACPI_SMBUS_IBM_HID); - else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) { - acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */ + else if (list_empty(&pnp->ids) && + acpi_object_is_system_bus(handle)) { + /* \_SB, \_TZ, LNXSYBUS */ + acpi_add_id(pnp, ACPI_BUS_HID); strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME); strcpy(pnp->device_class, ACPI_BUS_CLASS); } -- cgit v1.2.3 From d7c7c0256b936901eb7a70fbc6d674a6bdfd463e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:08:42 +0100 Subject: ACPI / hotplug / PCI: Do not clear event callback pointer for docks After recent changes adding dock station handling to the ACPI hotplug core, it is not necessary to clear the .event() pointer in the ACPIPHP device hotplug context for dock stations any more, so don't do that. Signed-off-by: Rafael J. Wysocki --- drivers/pci/hotplug/acpiphp_glue.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 91276f9fe268..db81412cacb0 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -304,13 +304,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data, if (acpi_has_method(handle, "_STA")) newfunc->flags |= FUNC_HAS_STA; - /* - * Dock stations' notify handler should be used for dock devices instead - * of the common one, so clear hp.event in their contexts. - */ - if (acpi_has_method(handle, "_DCK")) - context->hp.event = NULL; - acpi_unlock_hp_context(); /* search for objects that share the same slot */ -- cgit v1.2.3 From 59b42fa01fe2d84f3c3f28ee6f25510820ace35b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:08:51 +0100 Subject: ACPI / hotplug: Add .fixup() callback to struct acpi_hotplug_context In order for the ACPI dock station code to be able to use the callbacks pointed to by the ACPI device objects' hotplug contexts add a .fixup() callback pointer to struct acpi_hotplug_context. That callback will be useful to handle PCI devices located in dock stations. Signed-off-by: Rafael J. Wysocki --- drivers/pci/hotplug/acpiphp_glue.c | 2 +- include/acpi/acpi_bus.h | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index db81412cacb0..4228c67ceffe 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -80,7 +80,7 @@ static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) return NULL; context->refcount = 1; - acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event); + acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event, NULL); return context; } diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8fb297b5307c..007fe99e29f5 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -144,6 +144,7 @@ struct acpi_scan_handler { struct acpi_hotplug_context { struct acpi_device *self; int (*event)(struct acpi_device *, u32); + void (*fixup)(struct acpi_device *); }; /* @@ -366,10 +367,12 @@ static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) static inline void acpi_set_hp_context(struct acpi_device *adev, struct acpi_hotplug_context *hp, - int (*event)(struct acpi_device *, u32)) + int (*event)(struct acpi_device *, u32), + void (*fixup)(struct acpi_device *)) { hp->self = adev; hp->event = event; + hp->fixup = fixup; adev->hp = hp; } -- cgit v1.2.3 From 3b52b21fa1f44c8956e21dfba645eda959111b5e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:10:09 +0100 Subject: ACPI / dock: Use ACPI device object pointers instead of ACPI handles Rework the ACPI dock station driver to store ACPI device object pointers instead of ACPI handles in its internal data structures. The purpose is moslty to make subsequent simplifications possible, but also this allows the overall code size to be reduced slightly. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 104 +++++++++++++++---------------------- drivers/pci/hotplug/acpiphp_glue.c | 6 +-- include/acpi/acpi_drivers.h | 4 +- 3 files changed, 47 insertions(+), 67 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 3199ce950e05..8c3967cb4830 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -72,7 +72,7 @@ static DEFINE_MUTEX(hotplug_lock); struct dock_dependent_device { struct list_head list; - acpi_handle handle; + struct acpi_device *adev; const struct acpi_dock_ops *hp_ops; void *hp_context; unsigned int hp_refcount; @@ -98,12 +98,13 @@ enum dock_callback_type { *****************************************************************************/ /** * add_dock_dependent_device - associate a device with the dock station - * @ds: The dock station - * @handle: handle of the dependent device + * @ds: Dock station. + * @adev: Dependent ACPI device object. * * Add the dependent device to the dock's dependent device list. */ -static int add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) +static int add_dock_dependent_device(struct dock_station *ds, + struct acpi_device *adev) { struct dock_dependent_device *dd; @@ -111,7 +112,7 @@ static int add_dock_dependent_device(struct dock_station *ds, acpi_handle handle if (!dd) return -ENOMEM; - dd->handle = handle; + dd->adev = adev; INIT_LIST_HEAD(&dd->list); list_add_tail(&dd->list, &ds->dependent_devices); @@ -212,7 +213,7 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, return; if (cb) - cb(dd->handle, event, dd->hp_context); + cb(dd->adev->handle, event, dd->hp_context); dock_release_hotplug(dd); } @@ -231,18 +232,18 @@ static struct dock_station *find_dock_station(acpi_handle handle) /** * find_dock_dependent_device - get a device dependent on this dock * @ds: the dock station - * @handle: the acpi_handle of the device we want + * @adev: ACPI device object to find. * * iterate over the dependent device list for this dock. If the * dependent device matches the handle, return. */ static struct dock_dependent_device * -find_dock_dependent_device(struct dock_station *ds, acpi_handle handle) +find_dock_dependent_device(struct dock_station *ds, struct acpi_device *adev) { struct dock_dependent_device *dd; list_for_each_entry(dd, &ds->dependent_devices, list) - if (handle == dd->handle) + if (adev == dd->adev) return dd; return NULL; @@ -252,10 +253,9 @@ void register_dock_dependent_device(struct acpi_device *adev, acpi_handle dshandle) { struct dock_station *ds = find_dock_station(dshandle); - acpi_handle handle = adev->handle; - if (ds && !find_dock_dependent_device(ds, handle)) - add_dock_dependent_device(ds, handle); + if (ds && !find_dock_dependent_device(ds, adev)) + add_dock_dependent_device(ds, adev); } /***************************************************************************** @@ -264,24 +264,24 @@ void register_dock_dependent_device(struct acpi_device *adev, /** * is_dock_device - see if a device is on a dock station - * @handle: acpi handle of the device + * @adev: ACPI device object to check. * * If this device is either the dock station itself, * or is a device dependent on the dock station, then it * is a dock device */ -int is_dock_device(acpi_handle handle) +int is_dock_device(struct acpi_device *adev) { struct dock_station *dock_station; if (!dock_station_count) return 0; - if (acpi_dock_match(handle)) + if (acpi_dock_match(adev->handle)) return 1; list_for_each_entry(dock_station, &dock_stations, sibling) - if (find_dock_dependent_device(dock_station, handle)) + if (find_dock_dependent_device(dock_station, adev)) return 1; return 0; @@ -308,43 +308,6 @@ static int dock_present(struct dock_station *ds) return 0; } -/** - * dock_create_acpi_device - add new devices to acpi - * @handle - handle of the device to add - * - * This function will create a new acpi_device for the given - * handle if one does not exist already. This should cause - * acpi to scan for drivers for the given devices, and call - * matching driver's add routine. - */ -static void dock_create_acpi_device(acpi_handle handle) -{ - struct acpi_device *device = NULL; - int ret; - - acpi_bus_get_device(handle, &device); - if (!acpi_device_enumerated(device)) { - ret = acpi_bus_scan(handle); - if (ret) - pr_debug("error adding bus, %x\n", -ret); - } -} - -/** - * dock_remove_acpi_device - remove the acpi_device struct from acpi - * @handle - the handle of the device to remove - * - * Tell acpi to remove the acpi_device. This should cause any loaded - * driver to have it's remove routine called. - */ -static void dock_remove_acpi_device(acpi_handle handle) -{ - struct acpi_device *device; - - if (!acpi_bus_get_device(handle, &device)) - acpi_bus_trim(device); -} - /** * hot_remove_dock_devices - Remove dock station devices. * @ds: Dock station. @@ -362,7 +325,7 @@ static void hot_remove_dock_devices(struct dock_station *ds) dock_hotplug_event(dd, ACPI_NOTIFY_EJECT_REQUEST, false); list_for_each_entry_reverse(dd, &ds->dependent_devices, list) - dock_remove_acpi_device(dd->handle); + acpi_bus_trim(dd->adev); } /** @@ -388,12 +351,20 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) dock_hotplug_event(dd, event, DOCK_CALL_HANDLER); /* - * Now make sure that an acpi_device is created for each dependent - * device. That will cause scan handlers to be attached to device - * objects or acpi_drivers to be stopped/started if they are present. + * Check if all devices have been enumerated already. If not, run + * acpi_bus_scan() for them and that will cause scan handlers to be + * attached to device objects or acpi_drivers to be stopped/started if + * they are present. */ - list_for_each_entry(dd, &ds->dependent_devices, list) - dock_create_acpi_device(dd->handle); + list_for_each_entry(dd, &ds->dependent_devices, list) { + struct acpi_device *adev = dd->adev; + + if (!acpi_device_enumerated(adev)) { + int ret = acpi_bus_scan(adev->handle); + if (ret) + dev_dbg(&adev->dev, "scan error %d\n", -ret); + } + } } static void dock_event(struct dock_station *ds, u32 event, int num) @@ -514,6 +485,7 @@ int register_hotplug_dock_device(acpi_handle handle, { struct dock_dependent_device *dd; struct dock_station *dock_station; + struct acpi_device *adev; int ret = -EINVAL; if (WARN_ON(!context)) @@ -522,6 +494,10 @@ int register_hotplug_dock_device(acpi_handle handle, if (!dock_station_count) return -ENODEV; + ret = acpi_bus_get_device(handle, &adev); + if (ret) + return ret; + /* * make sure this handle is for a device dependent on the dock, * this would include the dock station itself @@ -532,7 +508,7 @@ int register_hotplug_dock_device(acpi_handle handle, * separately, so there are two 'dock stations' which need the * ops */ - dd = find_dock_dependent_device(dock_station, handle); + dd = find_dock_dependent_device(dock_station, adev); if (dd && !dock_init_hotplug(dd, ops, context, init, release)) ret = 0; } @@ -549,12 +525,16 @@ void unregister_hotplug_dock_device(acpi_handle handle) { struct dock_dependent_device *dd; struct dock_station *dock_station; + struct acpi_device *adev; if (!dock_station_count) return; + if (acpi_bus_get_device(handle, &adev)) + return; + list_for_each_entry(dock_station, &dock_stations, sibling) { - dd = find_dock_dependent_device(dock_station, handle); + dd = find_dock_dependent_device(dock_station, adev); if (dd) dock_release_hotplug(dd); } @@ -807,7 +787,7 @@ void acpi_dock_add(struct acpi_device *adev) goto err_unregister; /* add the dock station as a device dependent on itself */ - ret = add_dock_dependent_device(dock_station, handle); + ret = add_dock_dependent_device(dock_station, adev); if (ret) goto err_rmgroup; diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index d3d2cc6bb40a..cd886725c42e 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -334,7 +334,7 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, * by the native PCIe hotplug (PCIeHP), becuase that code is supposed to * expose slots to user space in those cases. */ - if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle)) + if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(adev)) && !(pdev && device_is_managed_by_native_pciehp(pdev))) { unsigned long long sun; int retval; @@ -369,7 +369,7 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, &val, 60*1000)) slot->flags |= SLOT_ENABLED; - if (is_dock_device(handle)) { + if (is_dock_device(adev)) { /* we don't want to call this device's _EJ0 * because we want the dock notify handler * to call it after it calls _DCK @@ -411,7 +411,7 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_for_each_entry(func, &slot->funcs, sibling) { struct acpi_device *adev = func_to_acpi_device(func); - if (is_dock_device(adev->handle)) + if (is_dock_device(adev)) unregister_hotplug_dock_device(adev->handle); acpi_lock_hp_context(); diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index b124fdb26046..d6c98b9cbe38 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -116,7 +116,7 @@ struct acpi_dock_ops { }; #ifdef CONFIG_ACPI_DOCK -extern int is_dock_device(acpi_handle handle); +extern int is_dock_device(struct acpi_device *adev); extern int register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, void *context, @@ -124,7 +124,7 @@ extern int register_hotplug_dock_device(acpi_handle handle, void (*release)(void *)); extern void unregister_hotplug_dock_device(acpi_handle handle); #else -static inline int is_dock_device(acpi_handle handle) +static inline int is_dock_device(struct acpi_device *adev) { return 0; } -- cgit v1.2.3 From edf5bf34d40804fbef32f240a79b74ffc69a658b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:10:18 +0100 Subject: ACPI / dock: Use callback pointers from devices' ACPI hotplug contexts Instead of requiring a set of special dock operations to be registered via register_hotplug_dock_device() for each ACPI dock device, it is much more straightforward to use callback pointers from the devices' hotplug contexts if available. For this reason, modify dock_hotplug_event() to use callback pointers from the hotplug contexts of ACPI devices and fall back to using the special dock operarions only if those callbacks are missing. Also make the ACPI-based PCI hotplug (ACPIPHP) subsystem set the .fixup callback pointer in the hotplug contexts of devices handled by it to a new function, acpiphp_post_dock_fixup(), so that the dock station driver can use the callbacks from those contexts instead of special dock operations registered via register_hotplug_dock_device(). Along with the above changes drop the ACPIPHP's dock operations that are not necessary any more. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 29 +++++++++ drivers/pci/hotplug/acpiphp_glue.c | 119 +++++++++++++++---------------------- 2 files changed, 78 insertions(+), 70 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 8c3967cb4830..78c4ee7a422e 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -185,9 +185,38 @@ static void dock_release_hotplug(struct dock_dependent_device *dd) static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, enum dock_callback_type cb_type) { + struct acpi_device *adev = dd->adev; acpi_notify_handler cb = NULL; bool run = false; + acpi_lock_hp_context(); + + if (!adev->hp) + goto no_context; + + if (cb_type == DOCK_CALL_FIXUP) { + void (*fixup)(struct acpi_device *); + + fixup = adev->hp->fixup; + if (fixup) { + acpi_unlock_hp_context(); + fixup(adev); + return; + } + } else { + int (*notify)(struct acpi_device *, u32); + + notify = adev->hp->event; + if (notify) { + acpi_unlock_hp_context(); + notify(adev, event); + return; + } + } + + no_context: + acpi_unlock_hp_context(); + mutex_lock(&hotplug_lock); if (dd->hp_context) { diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index cd886725c42e..15865aeebbb5 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -60,6 +60,7 @@ static LIST_HEAD(bridge_list); static DEFINE_MUTEX(bridge_mutex); static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type); +static void acpiphp_post_dock_fixup(struct acpi_device *adev); static void acpiphp_sanitize_bus(struct pci_bus *bus); static void acpiphp_set_hpp_values(struct pci_bus *bus); static void hotplug_event(u32 type, struct acpiphp_context *context); @@ -80,7 +81,8 @@ static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) return NULL; context->refcount = 1; - acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event, NULL); + acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event, + acpiphp_post_dock_fixup); return context; } @@ -130,6 +132,27 @@ static inline void put_bridge(struct acpiphp_bridge *bridge) kref_put(&bridge->ref, free_bridge); } +static struct acpiphp_context *acpiphp_grab_context(struct acpi_device *adev) +{ + struct acpiphp_context *context; + + acpi_lock_hp_context(); + context = acpiphp_get_context(adev); + if (!context || context->func.parent->is_going_away) { + acpi_unlock_hp_context(); + return NULL; + } + get_bridge(context->func.parent); + acpiphp_put_context(context); + acpi_unlock_hp_context(); + return context; +} + +static void acpiphp_let_context_go(struct acpiphp_context *context) +{ + put_bridge(context->func.parent); +} + static void free_bridge(struct kref *kref) { struct acpiphp_context *context; @@ -164,28 +187,29 @@ static void free_bridge(struct kref *kref) acpi_unlock_hp_context(); } -/* - * the _DCK method can do funny things... and sometimes not - * hah-hah funny. +/** + * acpiphp_post_dock_fixup - Post-dock fixups for PCI devices. + * @adev: ACPI device object corresponding to a PCI device. * - * TBD - figure out a way to only call fixups for - * systems that require them. + * TBD - figure out a way to only call fixups for systems that require them. */ -static void post_dock_fixups(acpi_handle not_used, u32 event, void *data) +static void acpiphp_post_dock_fixup(struct acpi_device *adev) { - struct acpiphp_context *context = data; - struct pci_bus *bus = context->func.slot->bus; + struct acpiphp_context *context = acpiphp_grab_context(adev); + struct pci_bus *bus; u32 buses; - if (!bus->self) + if (!context) return; + bus = context->func.slot->bus; + if (!bus->self) + goto out; + /* fixup bad _DCK function that rewrites * secondary bridge on slot */ - pci_read_config_dword(bus->self, - PCI_PRIMARY_BUS, - &buses); + pci_read_config_dword(bus->self, PCI_PRIMARY_BUS, &buses); if (((buses >> 8) & 0xff) != bus->busn_res.start) { buses = (buses & 0xff000000) @@ -194,24 +218,11 @@ static void post_dock_fixups(acpi_handle not_used, u32 event, void *data) | ((unsigned int)(bus->busn_res.end) << 16); pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses); } -} -static void dock_event(acpi_handle handle, u32 type, void *data) -{ - struct acpi_device *adev; - - adev = acpi_bus_get_acpi_device(handle); - if (adev) { - acpiphp_hotplug_event(adev, type); - acpi_bus_put_acpi_device(adev); - } + out: + acpiphp_let_context_go(context); } -static const struct acpi_dock_ops acpiphp_dock_ops = { - .fixup = post_dock_fixups, - .handler = dock_event, -}; - /* Check whether the PCI device is managed by native PCIe hotplug driver */ static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev) { @@ -241,20 +252,6 @@ static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev) return true; } -static void acpiphp_dock_init(void *data) -{ - struct acpiphp_context *context = data; - - get_bridge(context->func.parent); -} - -static void acpiphp_dock_release(void *data) -{ - struct acpiphp_context *context = data; - - put_bridge(context->func.parent); -} - /** * acpiphp_add_context - Add ACPIPHP context to an ACPI device object. * @handle: ACPI handle of the object to add a context to. @@ -300,15 +297,18 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, newfunc = &context->func; newfunc->function = function; newfunc->parent = bridge; + acpi_unlock_hp_context(); - if (acpi_has_method(handle, "_EJ0")) + /* + * If this is a dock device, its _EJ0 should be executed by the dock + * notify handler after calling _DCK. + */ + if (!is_dock_device(adev) && acpi_has_method(handle, "_EJ0")) newfunc->flags = FUNC_HAS_EJ0; if (acpi_has_method(handle, "_STA")) newfunc->flags |= FUNC_HAS_STA; - acpi_unlock_hp_context(); - /* search for objects that share the same slot */ list_for_each_entry(slot, &bridge->slots, node) if (slot->device == device) @@ -369,18 +369,6 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data, &val, 60*1000)) slot->flags |= SLOT_ENABLED; - if (is_dock_device(adev)) { - /* we don't want to call this device's _EJ0 - * because we want the dock notify handler - * to call it after it calls _DCK - */ - newfunc->flags &= ~FUNC_HAS_EJ0; - if (register_hotplug_dock_device(handle, - &acpiphp_dock_ops, context, - acpiphp_dock_init, acpiphp_dock_release)) - pr_debug("failed to register dock device\n"); - } - return AE_OK; } @@ -411,11 +399,9 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_for_each_entry(func, &slot->funcs, sibling) { struct acpi_device *adev = func_to_acpi_device(func); - if (is_dock_device(adev)) - unregister_hotplug_dock_device(adev->handle); - acpi_lock_hp_context(); adev->hp->event = NULL; + adev->hp->fixup = NULL; acpi_unlock_hp_context(); } slot->flags |= SLOT_IS_GOING_AWAY; @@ -851,19 +837,12 @@ static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type) { struct acpiphp_context *context; - acpi_lock_hp_context(); - context = acpiphp_get_context(adev); - if (!context || context->func.parent->is_going_away) { - acpi_unlock_hp_context(); + context = acpiphp_grab_context(adev); + if (!context) return -ENODATA; - } - get_bridge(context->func.parent); - acpiphp_put_context(context); - acpi_unlock_hp_context(); hotplug_event(type, context); - - put_bridge(context->func.parent); + acpiphp_let_context_go(context); return 0; } -- cgit v1.2.3 From be27b3dcb02335ec093b81053fc8c84b32d3106e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:10:27 +0100 Subject: ACPI / dock: Add .uevent() callback to struct acpi_hotplug_context In order to avoid the need to register special ACPI dock operations for SATA devices add a .uevent() callback pointer to struct acpi_hotplug_context and make dock_hotplug_event() use that callback if available. Also rename the existing .event() callback in struct acpi_hotplug_context to .notify() to avoid possible confusion in the future. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 11 ++++++++++- drivers/acpi/scan.c | 8 ++++---- drivers/pci/hotplug/acpiphp_glue.c | 8 ++++---- include/acpi/acpi_bus.h | 9 ++++++--- 4 files changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 78c4ee7a422e..a88fad9ff234 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -203,10 +203,19 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, fixup(adev); return; } + } else if (cb_type == DOCK_CALL_UEVENT) { + void (*uevent)(struct acpi_device *, u32); + + uevent = adev->hp->uevent; + if (uevent) { + acpi_unlock_hp_context(); + uevent(adev, event); + return; + } } else { int (*notify)(struct acpi_device *, u32); - notify = adev->hp->event; + notify = adev->hp->notify; if (notify) { acpi_unlock_hp_context(); notify(adev, event); diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 518aae461a00..e7d951032f85 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -496,17 +496,17 @@ void acpi_device_hotplug(void *data, u32 src) goto err_out; } } else { - int (*event)(struct acpi_device *, u32); + int (*notify)(struct acpi_device *, u32); acpi_lock_hp_context(); - event = adev->hp ? adev->hp->event : NULL; + notify = adev->hp ? adev->hp->notify : NULL; acpi_unlock_hp_context(); /* * There may be additional notify handlers for device objects * without the .event() callback, so ignore them here. */ - if (event) - error = event(adev, src); + if (notify) + error = notify(adev, src); else goto out; } diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 15865aeebbb5..a92b8b017901 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -59,7 +59,7 @@ static LIST_HEAD(bridge_list); static DEFINE_MUTEX(bridge_mutex); -static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type); +static int acpiphp_hotplug_notify(struct acpi_device *adev, u32 type); static void acpiphp_post_dock_fixup(struct acpi_device *adev); static void acpiphp_sanitize_bus(struct pci_bus *bus); static void acpiphp_set_hpp_values(struct pci_bus *bus); @@ -81,7 +81,7 @@ static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev) return NULL; context->refcount = 1; - acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event, + acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_notify, NULL, acpiphp_post_dock_fixup); return context; } @@ -400,7 +400,7 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) struct acpi_device *adev = func_to_acpi_device(func); acpi_lock_hp_context(); - adev->hp->event = NULL; + adev->hp->notify = NULL; adev->hp->fixup = NULL; acpi_unlock_hp_context(); } @@ -833,7 +833,7 @@ static void hotplug_event(u32 type, struct acpiphp_context *context) put_bridge(bridge); } -static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type) +static int acpiphp_hotplug_notify(struct acpi_device *adev, u32 type) { struct acpiphp_context *context; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 007fe99e29f5..738278606677 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -143,7 +143,8 @@ struct acpi_scan_handler { struct acpi_hotplug_context { struct acpi_device *self; - int (*event)(struct acpi_device *, u32); + int (*notify)(struct acpi_device *, u32); + void (*uevent)(struct acpi_device *, u32); void (*fixup)(struct acpi_device *); }; @@ -367,11 +368,13 @@ static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) static inline void acpi_set_hp_context(struct acpi_device *adev, struct acpi_hotplug_context *hp, - int (*event)(struct acpi_device *, u32), + int (*notify)(struct acpi_device *, u32), + void (*uevent)(struct acpi_device *, u32), void (*fixup)(struct acpi_device *)) { hp->self = adev; - hp->event = event; + hp->notify = notify; + hp->uevent = uevent; hp->fixup = fixup; adev->hp = hp; } -- cgit v1.2.3 From 5d5132059a1f652de9dc2d62a8ff15561e648d11 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 22 Feb 2014 00:48:31 +0100 Subject: ACPI / ATA: Add hotplug contexts to ACPI companions of SATA devices Modify the SATA subsystem to add hotplug contexts to ACPI companions of SATA devices and ports instead of registering special ACPI dock operations using register_hotplug_dock_device(). That change will allow the entire code handling those special ACPI dock operations to be dropped in the next commit. Signed-off-by: Rafael J. Wysocki Reviewed-by: Aaron Lu Acked-by: Tejun Heo --- drivers/acpi/scan.c | 11 ++++++++ drivers/ata/libata-acpi.c | 72 +++++++++++++++++++++++++++++------------------ include/acpi/acpi_bus.h | 5 ++++ 3 files changed, 61 insertions(+), 27 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index e7d951032f85..f6bcc24f73dc 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -71,6 +71,17 @@ void acpi_unlock_hp_context(void) mutex_unlock(&acpi_hp_context_lock); } +void acpi_initialize_hp_context(struct acpi_device *adev, + struct acpi_hotplug_context *hp, + int (*notify)(struct acpi_device *, u32), + void (*uevent)(struct acpi_device *, u32)) +{ + acpi_lock_hp_context(); + acpi_set_hp_context(adev, hp, notify, uevent, NULL); + acpi_unlock_hp_context(); +} +EXPORT_SYMBOL_GPL(acpi_initialize_hp_context); + int acpi_scan_add_handler(struct acpi_scan_handler *handler) { if (!handler || !handler->attach) diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 9e69a5308693..acb95dffdb6a 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -38,6 +38,16 @@ static void ata_acpi_clear_gtf(struct ata_device *dev) dev->gtf_cache = NULL; } +struct ata_acpi_hotplug_context { + struct acpi_hotplug_context hp; + union { + struct ata_port *ap; + struct ata_device *dev; + } data; +}; + +#define ata_hotplug_data(context) (container_of((context), struct ata_acpi_hotplug_context, hp)->data) + /** * ata_dev_acpi_handle - provide the acpi_handle for an ata_device * @dev: the acpi_handle returned will correspond to this device @@ -121,18 +131,17 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, ata_port_wait_eh(ap); } -static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data) +static int ata_acpi_dev_notify_dock(struct acpi_device *adev, u32 event) { - struct ata_device *dev = data; - + struct ata_device *dev = ata_hotplug_data(adev->hp).dev; ata_acpi_handle_hotplug(dev->link->ap, dev, event); + return 0; } -static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data) +static int ata_acpi_ap_notify_dock(struct acpi_device *adev, u32 event) { - struct ata_port *ap = data; - - ata_acpi_handle_hotplug(ap, NULL, event); + ata_acpi_handle_hotplug(ata_hotplug_data(adev->hp).ap, NULL, event); + return 0; } static void ata_acpi_uevent(struct ata_port *ap, struct ata_device *dev, @@ -154,31 +163,23 @@ static void ata_acpi_uevent(struct ata_port *ap, struct ata_device *dev, } } -static void ata_acpi_ap_uevent(acpi_handle handle, u32 event, void *data) +static void ata_acpi_ap_uevent(struct acpi_device *adev, u32 event) { - ata_acpi_uevent(data, NULL, event); + ata_acpi_uevent(ata_hotplug_data(adev->hp).ap, NULL, event); } -static void ata_acpi_dev_uevent(acpi_handle handle, u32 event, void *data) +static void ata_acpi_dev_uevent(struct acpi_device *adev, u32 event) { - struct ata_device *dev = data; + struct ata_device *dev = ata_hotplug_data(adev->hp).dev; ata_acpi_uevent(dev->link->ap, dev, event); } -static const struct acpi_dock_ops ata_acpi_dev_dock_ops = { - .handler = ata_acpi_dev_notify_dock, - .uevent = ata_acpi_dev_uevent, -}; - -static const struct acpi_dock_ops ata_acpi_ap_dock_ops = { - .handler = ata_acpi_ap_notify_dock, - .uevent = ata_acpi_ap_uevent, -}; - /* bind acpi handle to pata port */ void ata_acpi_bind_port(struct ata_port *ap) { struct acpi_device *host_companion = ACPI_COMPANION(ap->host->dev); + struct acpi_device *adev; + struct ata_acpi_hotplug_context *context; if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA || !host_companion) return; @@ -188,9 +189,17 @@ void ata_acpi_bind_port(struct ata_port *ap) if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0) ap->pflags |= ATA_PFLAG_INIT_GTM_VALID; - /* we might be on a docking station */ - register_hotplug_dock_device(ACPI_HANDLE(&ap->tdev), - &ata_acpi_ap_dock_ops, ap, NULL, NULL); + adev = ACPI_COMPANION(&ap->tdev); + if (!adev || adev->hp) + return; + + context = kzalloc(sizeof(*context), GFP_KERNEL); + if (!context) + return; + + context->data.ap = ap; + acpi_initialize_hp_context(adev, &context->hp, ata_acpi_ap_notify_dock, + ata_acpi_ap_uevent); } void ata_acpi_bind_dev(struct ata_device *dev) @@ -198,7 +207,8 @@ void ata_acpi_bind_dev(struct ata_device *dev) struct ata_port *ap = dev->link->ap; struct acpi_device *port_companion = ACPI_COMPANION(&ap->tdev); struct acpi_device *host_companion = ACPI_COMPANION(ap->host->dev); - struct acpi_device *parent; + struct acpi_device *parent, *adev; + struct ata_acpi_hotplug_context *context; u64 adr; /* @@ -221,9 +231,17 @@ void ata_acpi_bind_dev(struct ata_device *dev) } acpi_preset_companion(&dev->tdev, parent, adr); + adev = ACPI_COMPANION(&dev->tdev); + if (!adev || adev->hp) + return; + + context = kzalloc(sizeof(*context), GFP_KERNEL); + if (!context) + return; - register_hotplug_dock_device(ata_dev_acpi_handle(dev), - &ata_acpi_dev_dock_ops, dev, NULL, NULL); + context->data.dev = dev; + acpi_initialize_hp_context(adev, &context->hp, ata_acpi_dev_notify_dock, + ata_acpi_dev_uevent); } /** diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 738278606677..fb23a7b6c919 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -379,6 +379,11 @@ static inline void acpi_set_hp_context(struct acpi_device *adev, adev->hp = hp; } +void acpi_initialize_hp_context(struct acpi_device *adev, + struct acpi_hotplug_context *hp, + int (*notify)(struct acpi_device *, u32), + void (*uevent)(struct acpi_device *, u32)); + /* acpi_device.dev.bus == &acpi_bus_type */ extern struct bus_type acpi_bus_type; -- cgit v1.2.3 From 2f16817d87dcd3fc79e0320f6f0bd186b1ae6184 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:11:30 +0100 Subject: ACPI / dock: Drop struct acpi_dock_ops and all code related to it Since struct acpi_dock_ops and the code handling it don't have any users any more after the previous changes, drop that structure and the code related to it altogether. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 167 +------------------------------------------- include/acpi/acpi_drivers.h | 22 ------ 2 files changed, 2 insertions(+), 187 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index a88fad9ff234..f6fd325078b3 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -68,15 +68,10 @@ struct dock_station { }; static LIST_HEAD(dock_stations); static int dock_station_count; -static DEFINE_MUTEX(hotplug_lock); struct dock_dependent_device { struct list_head list; struct acpi_device *adev; - const struct acpi_dock_ops *hp_ops; - void *hp_context; - unsigned int hp_refcount; - void (*hp_release)(void *); }; #define DOCK_DOCKING 0x00000001 @@ -129,70 +124,15 @@ static void remove_dock_dependent_devices(struct dock_station *ds) } } -/** - * dock_init_hotplug - Initialize a hotplug device on a docking station. - * @dd: Dock-dependent device. - * @ops: Dock operations to attach to the dependent device. - * @context: Data to pass to the @ops callbacks and @release. - * @init: Optional initialization routine to run after setting up context. - * @release: Optional release routine to run on removal. - */ -static int dock_init_hotplug(struct dock_dependent_device *dd, - const struct acpi_dock_ops *ops, void *context, - void (*init)(void *), void (*release)(void *)) -{ - int ret = 0; - - mutex_lock(&hotplug_lock); - if (WARN_ON(dd->hp_context)) { - ret = -EEXIST; - } else { - dd->hp_refcount = 1; - dd->hp_ops = ops; - dd->hp_context = context; - dd->hp_release = release; - if (init) - init(context); - } - mutex_unlock(&hotplug_lock); - return ret; -} - -/** - * dock_release_hotplug - Decrement hotplug reference counter of dock device. - * @dd: Dock-dependent device. - * - * Decrement the reference counter of @dd and if 0, detach its hotplug - * operations from it, reset its context pointer and run the optional release - * routine if present. - */ -static void dock_release_hotplug(struct dock_dependent_device *dd) -{ - mutex_lock(&hotplug_lock); - if (dd->hp_context && !--dd->hp_refcount) { - void (*release)(void *) = dd->hp_release; - void *context = dd->hp_context; - - dd->hp_ops = NULL; - dd->hp_context = NULL; - dd->hp_release = NULL; - if (release) - release(context); - } - mutex_unlock(&hotplug_lock); -} - static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, enum dock_callback_type cb_type) { struct acpi_device *adev = dd->adev; - acpi_notify_handler cb = NULL; - bool run = false; acpi_lock_hp_context(); if (!adev->hp) - goto no_context; + goto out; if (cb_type == DOCK_CALL_FIXUP) { void (*fixup)(struct acpi_device *); @@ -223,37 +163,8 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, } } - no_context: + out: acpi_unlock_hp_context(); - - mutex_lock(&hotplug_lock); - - if (dd->hp_context) { - run = true; - dd->hp_refcount++; - if (dd->hp_ops) { - switch (cb_type) { - case DOCK_CALL_FIXUP: - cb = dd->hp_ops->fixup; - break; - case DOCK_CALL_UEVENT: - cb = dd->hp_ops->uevent; - break; - default: - cb = dd->hp_ops->handler; - } - } - } - - mutex_unlock(&hotplug_lock); - - if (!run) - return; - - if (cb) - cb(dd->adev->handle, event, dd->hp_context); - - dock_release_hotplug(dd); } static struct dock_station *find_dock_station(acpi_handle handle) @@ -505,80 +416,6 @@ static int dock_in_progress(struct dock_station *ds) return 0; } -/** - * register_hotplug_dock_device - register a hotplug function - * @handle: the handle of the device - * @ops: handlers to call after docking - * @context: device specific data - * @init: Optional initialization routine to run after registration - * @release: Optional release routine to run on unregistration - * - * If a driver would like to perform a hotplug operation after a dock - * event, they can register an acpi_notifiy_handler to be called by - * the dock driver after _DCK is executed. - */ -int register_hotplug_dock_device(acpi_handle handle, - const struct acpi_dock_ops *ops, void *context, - void (*init)(void *), void (*release)(void *)) -{ - struct dock_dependent_device *dd; - struct dock_station *dock_station; - struct acpi_device *adev; - int ret = -EINVAL; - - if (WARN_ON(!context)) - return -EINVAL; - - if (!dock_station_count) - return -ENODEV; - - ret = acpi_bus_get_device(handle, &adev); - if (ret) - return ret; - - /* - * make sure this handle is for a device dependent on the dock, - * this would include the dock station itself - */ - list_for_each_entry(dock_station, &dock_stations, sibling) { - /* - * An ATA bay can be in a dock and itself can be ejected - * separately, so there are two 'dock stations' which need the - * ops - */ - dd = find_dock_dependent_device(dock_station, adev); - if (dd && !dock_init_hotplug(dd, ops, context, init, release)) - ret = 0; - } - - return ret; -} -EXPORT_SYMBOL_GPL(register_hotplug_dock_device); - -/** - * unregister_hotplug_dock_device - remove yourself from the hotplug list - * @handle: the acpi handle of the device - */ -void unregister_hotplug_dock_device(acpi_handle handle) -{ - struct dock_dependent_device *dd; - struct dock_station *dock_station; - struct acpi_device *adev; - - if (!dock_station_count) - return; - - if (acpi_bus_get_device(handle, &adev)) - return; - - list_for_each_entry(dock_station, &dock_stations, sibling) { - dd = find_dock_dependent_device(dock_station, adev); - if (dd) - dock_release_hotplug(dd); - } -} -EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device); - /** * handle_eject_request - handle an undock request checking for error conditions * diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index d6c98b9cbe38..d504613bbf80 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -109,36 +109,14 @@ void pci_acpi_crs_quirks(void); /*-------------------------------------------------------------------------- Dock Station -------------------------------------------------------------------------- */ -struct acpi_dock_ops { - acpi_notify_handler fixup; - acpi_notify_handler handler; - acpi_notify_handler uevent; -}; #ifdef CONFIG_ACPI_DOCK extern int is_dock_device(struct acpi_device *adev); -extern int register_hotplug_dock_device(acpi_handle handle, - const struct acpi_dock_ops *ops, - void *context, - void (*init)(void *), - void (*release)(void *)); -extern void unregister_hotplug_dock_device(acpi_handle handle); #else static inline int is_dock_device(struct acpi_device *adev) { return 0; } -static inline int register_hotplug_dock_device(acpi_handle handle, - const struct acpi_dock_ops *ops, - void *context, - void (*init)(void *), - void (*release)(void *)) -{ - return -ENODEV; -} -static inline void unregister_hotplug_dock_device(acpi_handle handle) -{ -} #endif /* CONFIG_ACPI_DOCK */ #endif /*__ACPI_DRIVERS_H__*/ -- cgit v1.2.3 From f311e1c4a6ea2347c8e167525f8a0fb9af9125ed Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:11:38 +0100 Subject: ACPI / dock: Drop remove_dock_dependent_devices() Since remove_dock_dependent_devices() is only called from acpi_dock_add() and it only is called if the add_dock_dependent_device() adding the dock station to its own list of dependent devices has failed, it is not really necessary, because the dock station's list of dependent devices is guaranteed to be empty at that point. Drop it, then. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index f6fd325078b3..d9baeae09d31 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -114,16 +114,6 @@ static int add_dock_dependent_device(struct dock_station *ds, return 0; } -static void remove_dock_dependent_devices(struct dock_station *ds) -{ - struct dock_dependent_device *dd, *aux; - - list_for_each_entry_safe(dd, aux, &ds->dependent_devices, list) { - list_del(&dd->list); - kfree(dd); - } -} - static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, enum dock_callback_type cb_type) { @@ -674,8 +664,8 @@ void acpi_dock_add(struct acpi_device *adev) return; err_rmgroup: - remove_dock_dependent_devices(dock_station); sysfs_remove_group(&dd->dev.kobj, &dock_attribute_group); + err_unregister: platform_device_unregister(dd); acpi_handle_err(handle, "%s encountered error %d\n", __func__, ret); -- cgit v1.2.3 From 8cc2568124ad599a60024d5b410ba812a0b0917a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:11:46 +0100 Subject: ACPI / dock: Update copyright notice Update the copyright notice of the ACPI dock driver to reflect the fact that substantial changes have been made to it recently. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index d9baeae09d31..a7bd3002dbbc 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -1,7 +1,9 @@ /* * dock.c - ACPI dock station driver * - * Copyright (C) 2006 Kristen Carlson Accardi + * Copyright (C) 2006, 2014, Intel Corp. + * Author: Kristen Carlson Accardi + * Rafael J. Wysocki * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * -- cgit v1.2.3 From 700b8422fb9e6041907bda45a15f4e2ab0438a04 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 21 Feb 2014 01:07:17 +0100 Subject: ACPI: Drop acpi_evaluate_hotplug_ost() and ACPI_HOTPLUG_OST Replace acpi_evaluate_hotplug_ost() with acpi_evaluate_ost() everywhere and drop the ACPI_HOTPLUG_OST symbol so that hotplug _OST is supported unconditionally. Signed-off-by: Rafael J. Wysocki Acked-by: Toshi Kani --- drivers/acpi/bus.c | 4 +--- drivers/acpi/scan.c | 10 +++++----- drivers/acpi/utils.c | 2 +- drivers/xen/xen-acpi-cpuhotplug.c | 2 +- drivers/xen/xen-acpi-memhotplug.c | 2 +- include/acpi/acpi_bus.h | 8 -------- 6 files changed, 9 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index e61e7b8a2eaf..4cefb98f274d 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -311,9 +311,7 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; #endif -#ifdef ACPI_HOTPLUG_OST capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; -#endif if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; @@ -410,7 +408,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) return; err: - acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL); + acpi_evaluate_ost(handle, type, ost_code, NULL); } /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 3fc530a8d362..f2d8d1c1c391 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -463,8 +463,8 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) dev_info(&adev->dev, "Eject disabled\n"); return -EPERM; } - acpi_evaluate_hotplug_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST, - ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); + acpi_evaluate_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST, + ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); return acpi_scan_hot_remove(adev); } return -EINVAL; @@ -512,7 +512,7 @@ void acpi_device_hotplug(void *data, u32 src) ost_code = ACPI_OST_SC_SUCCESS; err_out: - acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL); + acpi_evaluate_ost(adev->handle, src, ost_code, NULL); out: acpi_bus_put_acpi_device(adev); @@ -572,8 +572,8 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, return count; put_device(&acpi_device->dev); - acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, - ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL); + acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, + ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL); return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN; } diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 19d016974080..0f5f78fa6545 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -422,7 +422,7 @@ out: EXPORT_SYMBOL(acpi_get_physical_device_location); /** - * acpi_evaluate_hotplug_ost: Evaluate _OST for hotplug operations + * acpi_evaluate_ost: Evaluate _OST for hotplug operations * @handle: ACPI device handle * @source_event: source event code * @status_code: status code diff --git a/drivers/xen/xen-acpi-cpuhotplug.c b/drivers/xen/xen-acpi-cpuhotplug.c index 80875fb770ed..3e62ee4b3b66 100644 --- a/drivers/xen/xen-acpi-cpuhotplug.c +++ b/drivers/xen/xen-acpi-cpuhotplug.c @@ -313,7 +313,7 @@ static void acpi_processor_hotplug_notify(acpi_handle handle, goto out; } - (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL); + (void) acpi_evaluate_ost(handle, event, ost_code, NULL); out: acpi_scan_lock_release(); diff --git a/drivers/xen/xen-acpi-memhotplug.c b/drivers/xen/xen-acpi-memhotplug.c index f8d18626969a..34e40b733f9a 100644 --- a/drivers/xen/xen-acpi-memhotplug.c +++ b/drivers/xen/xen-acpi-memhotplug.c @@ -285,7 +285,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data) return; } - (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL); + (void) acpi_evaluate_ost(handle, event, ost_code, NULL); return; } diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 5225fe06e4ff..4308a9aacc9a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -51,14 +51,6 @@ acpi_evaluate_reference(acpi_handle handle, acpi_status acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, struct acpi_buffer *status_buf); -#ifdef ACPI_HOTPLUG_OST -#define acpi_evaluate_hotplug_ost acpi_evaluate_ost -#else -static inline acpi_status -acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event, - u32 status_code, struct acpi_buffer *status_buf) -{ return AE_OK; } -#endif acpi_status acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); -- cgit v1.2.3 From d9a789c7a07e96eda7515e43932ee608dcece34d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 17 Feb 2014 22:56:35 +0100 Subject: cpufreq: Refactor cpufreq_set_policy() Reduce the rampant usage of goto and the indentation level in cpufreq_set_policy() to improve the readability of that code. No functional changes should result from that. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar Reviewed-by: Srivatsa S. Bhat --- drivers/cpufreq/cpufreq.c | 99 +++++++++++++++++++++-------------------------- 1 file changed, 44 insertions(+), 55 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index cb003a6b72c8..37f30550522a 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2017,22 +2017,21 @@ EXPORT_SYMBOL(cpufreq_get_policy); static int cpufreq_set_policy(struct cpufreq_policy *policy, struct cpufreq_policy *new_policy) { - int ret = 0, failed = 1; + struct cpufreq_governor *old_gov; + int ret; pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu, new_policy->min, new_policy->max); memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo)); - if (new_policy->min > policy->max || new_policy->max < policy->min) { - ret = -EINVAL; - goto error_out; - } + if (new_policy->min > policy->max || new_policy->max < policy->min) + return -EINVAL; /* verify the cpu speed can be set within this limit */ ret = cpufreq_driver->verify(new_policy); if (ret) - goto error_out; + return ret; /* adjust if necessary - all reasons */ blocking_notifier_call_chain(&cpufreq_policy_notifier_list, @@ -2048,7 +2047,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, */ ret = cpufreq_driver->verify(new_policy); if (ret) - goto error_out; + return ret; /* notification of the new policy */ blocking_notifier_call_chain(&cpufreq_policy_notifier_list, @@ -2063,58 +2062,48 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, if (cpufreq_driver->setpolicy) { policy->policy = new_policy->policy; pr_debug("setting range\n"); - ret = cpufreq_driver->setpolicy(new_policy); - } else { - if (new_policy->governor != policy->governor) { - /* save old, working values */ - struct cpufreq_governor *old_gov = policy->governor; - - pr_debug("governor switch\n"); - - /* end old governor */ - if (policy->governor) { - __cpufreq_governor(policy, CPUFREQ_GOV_STOP); - up_write(&policy->rwsem); - __cpufreq_governor(policy, - CPUFREQ_GOV_POLICY_EXIT); - down_write(&policy->rwsem); - } + return cpufreq_driver->setpolicy(new_policy); + } - /* start new governor */ - policy->governor = new_policy->governor; - if (!__cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) { - if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) { - failed = 0; - } else { - up_write(&policy->rwsem); - __cpufreq_governor(policy, - CPUFREQ_GOV_POLICY_EXIT); - down_write(&policy->rwsem); - } - } + if (new_policy->governor == policy->governor) + goto out; - if (failed) { - /* new governor failed, so re-start old one */ - pr_debug("starting governor %s failed\n", - policy->governor->name); - if (old_gov) { - policy->governor = old_gov; - __cpufreq_governor(policy, - CPUFREQ_GOV_POLICY_INIT); - __cpufreq_governor(policy, - CPUFREQ_GOV_START); - } - ret = -EINVAL; - goto error_out; - } - /* might be a policy change, too, so fall through */ - } - pr_debug("governor: change or update limits\n"); - ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); + pr_debug("governor switch\n"); + + /* save old, working values */ + old_gov = policy->governor; + /* end old governor */ + if (old_gov) { + __cpufreq_governor(policy, CPUFREQ_GOV_STOP); + up_write(&policy->rwsem); + __cpufreq_governor(policy,CPUFREQ_GOV_POLICY_EXIT); + down_write(&policy->rwsem); } -error_out: - return ret; + /* start new governor */ + policy->governor = new_policy->governor; + if (!__cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) { + if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) + goto out; + + up_write(&policy->rwsem); + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); + down_write(&policy->rwsem); + } + + /* new governor failed, so re-start old one */ + pr_debug("starting governor %s failed\n", policy->governor->name); + if (old_gov) { + policy->governor = old_gov; + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT); + __cpufreq_governor(policy, CPUFREQ_GOV_START); + } + + return -EINVAL; + + out: + pr_debug("governor: change or update limits\n"); + return __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); } /** -- cgit v1.2.3 From 1c0ca90207d61e4868043b5bbbbd7cc0bb1ac974 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 14 Feb 2014 16:30:41 +0530 Subject: cpufreq: don't call cpufreq_update_policy() on CPU addition cpufreq_update_policy() is called from two places currently. From a workqueue handled queued from cpufreq_bp_resume() for boot CPU and from cpufreq_cpu_callback() whenever a CPU is added. The first one makes sure that boot CPU is running on the frequency present in policy->cpu. But we don't really need a call from cpufreq_cpu_callback(), because we always call cpufreq_driver->init() (which will set policy->cur correctly) whenever first CPU of any policy is added back. And so every policy structure is guaranteed to have the right frequency in policy->cur. Signed-off-by: Viresh Kumar Reviewed-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 37f30550522a..c755b5fe317c 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2175,7 +2175,6 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: __cpufreq_add_dev(dev, NULL, frozen); - cpufreq_update_policy(cpu); break; case CPU_DOWN_PREPARE: -- cgit v1.2.3 From 4ac4c5fad8a320f75cb84543403fb8bae5ad2254 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:28:32 +0800 Subject: ACPICA: Headers: Deploy #pragma pack (push) and (pop). Use push and pop to both guarantee that the correct alignment is used, and to restore the alignment to whatever it was before the header was included. It is reported that the #pragma pack(push/pop) directives are not supported by the specific GCCs, but this patch still doesn't affect kernel build as there are already #pragma pack([1]) directives used in the old ACPICA headers, which means there shouldn't be GCCs that are currently used to compile the ACPI kernels do not support #pragma pack() directives. References: https://bugs.acpica.org/show_bug.cgi?id=1058 Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acdebug.h | 4 ++++ drivers/acpi/acpica/acdispat.h | 4 ++++ drivers/acpi/acpica/acevents.h | 3 +++ drivers/acpi/acpica/acglobal.h | 4 ++++ drivers/acpi/acpica/achware.h | 4 ++++ drivers/acpi/acpica/acinterp.h | 4 ++++ drivers/acpi/acpica/aclocal.h | 4 ++++ drivers/acpi/acpica/acmacros.h | 4 ++++ drivers/acpi/acpica/acnamesp.h | 4 ++++ drivers/acpi/acpica/acobject.h | 4 +++- drivers/acpi/acpica/acparser.h | 4 ++++ drivers/acpi/acpica/acpredef.h | 4 ++++ drivers/acpi/acpica/acresrc.h | 4 ++++ drivers/acpi/acpica/acstruct.h | 4 ++++ drivers/acpi/acpica/actables.h | 4 ++++ drivers/acpi/acpica/acutils.h | 4 ++++ drivers/acpi/acpica/amlcode.h | 4 ++++ drivers/acpi/acpica/amlresrc.h | 4 ++++ include/acpi/acbuffer.h | 4 ++++ include/acpi/acconfig.h | 4 ++++ include/acpi/acexcep.h | 4 ++++ include/acpi/acoutput.h | 4 ++++ include/acpi/acpiosxf.h | 4 ++++ include/acpi/acpixf.h | 4 ++++ include/acpi/acrestyp.h | 4 ++++ include/acpi/actbl.h | 4 ++++ include/acpi/actbl1.h | 6 +++--- include/acpi/actbl2.h | 6 +++--- include/acpi/actbl3.h | 6 +++--- include/acpi/actypes.h | 4 ++++ 30 files changed, 115 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index 68a91eb0fa48..e9ab514a96c8 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -44,6 +44,8 @@ #ifndef __ACDEBUG_H__ #define __ACDEBUG_H__ +#pragma pack(push) /* Set default struct packing */ + #define ACPI_DEBUG_BUFFER_SIZE 0x4000 /* 16K buffer for return objects */ struct acpi_db_command_info { @@ -282,4 +284,6 @@ struct acpi_namespace_node *acpi_db_local_ns_lookup(char *name); void acpi_db_uint32_to_hex_string(u32 value, char *buffer); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACDEBUG_H__ */ diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h index 5b472c43c31d..53b6dd679ffa 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -44,6 +44,8 @@ #ifndef _ACDISPAT_H_ #define _ACDISPAT_H_ +#pragma pack(push) /* Set default struct packing */ + #define NAMEOF_LOCAL_NTE "__L0" #define NAMEOF_ARG_NTE "__A0" @@ -351,4 +353,6 @@ acpi_status acpi_ds_result_push(union acpi_operand_object *object, struct acpi_walk_state *walk_state); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* _ACDISPAT_H_ */ diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 68ec61fff188..75f25eda3a6a 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -44,6 +44,8 @@ #ifndef __ACEVENTS_H__ #define __ACEVENTS_H__ +#pragma pack(push) /* Set default struct packing */ + /* * evevent */ @@ -251,4 +253,5 @@ u32 acpi_ev_install_sci_handler(void); acpi_status acpi_ev_remove_all_sci_handlers(void); ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_ev_terminate(void)) +#pragma pack(pop) /* Restore original struct packing */ #endif /* __ACEVENTS_H__ */ diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index b88771b13779..203b2dc5ea28 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -44,6 +44,8 @@ #ifndef __ACGLOBAL_H__ #define __ACGLOBAL_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Ensure that the globals are actually defined and initialized only once. * @@ -520,4 +522,6 @@ ACPI_FILE ACPI_INIT_GLOBAL(acpi_gbl_debug_file, NULL); extern const struct ah_predefined_name asl_predefined_info[]; +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACGLOBAL_H__ */ diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 2ad2351a9833..4a0e63457881 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -44,6 +44,8 @@ #ifndef __ACHWARE_H__ #define __ACHWARE_H__ +#pragma pack(push) /* Set default struct packing */ + /* Values for the _SST predefined method */ #define ACPI_SST_INDICATOR_OFF 0 @@ -147,4 +149,6 @@ acpi_status acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id, acpi_handle root_pci_device, acpi_handle pci_region); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACHWARE_H__ */ diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h index 948a6800ab09..277f4d03c080 100644 --- a/drivers/acpi/acpica/acinterp.h +++ b/drivers/acpi/acpica/acinterp.h @@ -44,6 +44,8 @@ #ifndef __ACINTERP_H__ #define __ACINTERP_H__ +#pragma pack(push) /* Set default struct packing */ + #define ACPI_WALK_OPERANDS (&(walk_state->operands [walk_state->num_operands -1])) /* Macros for tables used for debug output */ @@ -531,4 +533,6 @@ acpi_ex_data_table_space_handler(u32 function, u64 *value, void *handler_context, void *region_context); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __INTERP_H__ */ diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 52a21dafb540..fee53b50399b 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -44,6 +44,8 @@ #ifndef __ACLOCAL_H__ #define __ACLOCAL_H__ +#pragma pack(push) /* Set default struct packing */ + /* acpisrc:struct_defs -- for acpisrc conversion */ #define ACPI_SERIALIZED 0xFF @@ -1147,4 +1149,6 @@ struct ah_predefined_name { #endif }; +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACLOCAL_H__ */ diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 4bceb11c7380..9b0ce226bf5d 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -44,6 +44,8 @@ #ifndef __ACMACROS_H__ #define __ACMACROS_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Extract data using a pointer. Any more than a byte and we * get into potential aligment issues -- see the STORE macros below. @@ -427,4 +429,6 @@ #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7')) +#pragma pack(pop) /* Restore original struct packing */ + #endif /* ACMACROS_H */ diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index ee1c040f321c..751083dd7793 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -44,6 +44,8 @@ #ifndef __ACNAMESP_H__ #define __ACNAMESP_H__ +#pragma pack(push) /* Set default struct packing */ + /* To search the entire name space, pass this as search_base */ #define ACPI_NS_ALL ((acpi_handle)0) @@ -404,4 +406,6 @@ struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle); void acpi_ns_terminate(void); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACNAMESP_H__ */ diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index 1a4d61805ebc..7ce7e9f1a040 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -44,6 +44,8 @@ #ifndef _ACOBJECT_H #define _ACOBJECT_H +#pragma pack(push) /* Set default struct packing */ + /* acpisrc:struct_defs -- for acpisrc conversion */ /* @@ -456,6 +458,6 @@ union acpi_descriptor { union acpi_parse_object op; }; -#pragma pack() +#pragma pack(pop) /* Restore original struct packing */ #endif /* _ACOBJECT_H */ diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h index 6168b85463ed..3d828be9dc20 100644 --- a/drivers/acpi/acpica/acparser.h +++ b/drivers/acpi/acpica/acparser.h @@ -44,6 +44,8 @@ #ifndef __ACPARSER_H__ #define __ACPARSER_H__ +#pragma pack(push) /* Set default struct packing */ + #define OP_HAS_RETURN_VALUE 1 /* Variable number of arguments. This field must be 32 bits */ @@ -251,4 +253,6 @@ acpi_ps_sprint_op(char *buffer_start, void acpi_ps_show(union acpi_parse_object *op); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACPARSER_H__ */ diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index 9c73d6c5ead2..01b9eaaa982d 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -44,6 +44,8 @@ #ifndef __ACPREDEF_H__ #define __ACPREDEF_H__ +#pragma pack(push) /* Set default struct packing */ + /****************************************************************************** * * Return Package types @@ -1080,4 +1082,6 @@ static const union acpi_predefined_info acpi_gbl_scope_names[] = { extern const union acpi_predefined_info acpi_gbl_resource_names[]; #endif +#pragma pack(pop) /* Restore original struct packing */ + #endif diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h index 4b008e8884a1..be16da2d9f3d 100644 --- a/drivers/acpi/acpica/acresrc.h +++ b/drivers/acpi/acpica/acresrc.h @@ -48,6 +48,8 @@ #include "amlresrc.h" +#pragma pack(push) /* Set default struct packing */ + /* * If possible, pack the following structures to byte alignment, since we * don't care about performance for debug output. Two cases where we cannot @@ -378,4 +380,6 @@ extern struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[]; extern struct acpi_rsdump_info acpi_rs_dump_general_flags[]; #endif +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACRESRC_H__ */ diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h index 5d2989a1b68c..5a3fa0ddc1bc 100644 --- a/drivers/acpi/acpica/acstruct.h +++ b/drivers/acpi/acpica/acstruct.h @@ -44,6 +44,8 @@ #ifndef __ACSTRUCT_H__ #define __ACSTRUCT_H__ +#pragma pack(push) /* Set default struct packing */ + /* acpisrc:struct_defs -- for acpisrc conversion */ /***************************************************************************** @@ -241,4 +243,6 @@ struct acpi_walk_info { #define ACPI_DISPLAY_SHORT (u8) 2 +#pragma pack(pop) /* Restore original struct packing */ + #endif diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index 5fa4b2027697..9b0f9846e014 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -44,6 +44,8 @@ #ifndef __ACTABLES_H__ #define __ACTABLES_H__ +#pragma pack(push) /* Set default struct packing */ + acpi_status acpi_allocate_root_table(u32 initial_table_count); /* @@ -129,4 +131,6 @@ acpi_tb_install_table(acpi_physical_address address, acpi_status acpi_tb_parse_root_table(acpi_physical_address rsdp_address); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACTABLES_H__ */ diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index ceeec0b7ccb1..df970ffb7356 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -44,6 +44,8 @@ #ifndef _ACUTILS_H #define _ACUTILS_H +#pragma pack(push) /* Set default struct packing */ + extern const u8 acpi_gbl_resource_aml_sizes[]; extern const u8 acpi_gbl_resource_aml_serial_bus_sizes[]; @@ -737,4 +739,6 @@ acpi_ut_method_error(const char *module_name, struct acpi_namespace_node *node, const char *path, acpi_status lookup_status); +#pragma pack(pop) /* Restore original struct packing */ + #endif /* _ACUTILS_H */ diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index 5908ccec6aea..2db27109d70e 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -46,6 +46,8 @@ #ifndef __AMLCODE_H__ #define __AMLCODE_H__ +#pragma pack(push) /* Set default struct packing */ + /* primary opcodes */ #define AML_NULL_CHAR (u16) 0x00 @@ -484,4 +486,6 @@ typedef enum { #define AML_METHOD_SERIALIZED 0x08 #define AML_METHOD_SYNC_LEVEL 0xF0 +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __AMLCODE_H__ */ diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h index f3f834408441..334fbeee80d2 100644 --- a/drivers/acpi/acpica/amlresrc.h +++ b/drivers/acpi/acpica/amlresrc.h @@ -46,6 +46,8 @@ #ifndef __AMLRESRC_H #define __AMLRESRC_H +#pragma pack(push) /* Set default struct packing */ + /* * Resource descriptor tags, as defined in the ACPI specification. * Used to symbolically reference fields within a descriptor. @@ -449,4 +451,6 @@ union aml_resource { u8 byte_item; }; +#pragma pack(pop) /* Restore original struct packing */ + #endif diff --git a/include/acpi/acbuffer.h b/include/acpi/acbuffer.h index 88cb477524a6..960c76fb69a1 100644 --- a/include/acpi/acbuffer.h +++ b/include/acpi/acbuffer.h @@ -44,6 +44,8 @@ #ifndef __ACBUFFER_H__ #define __ACBUFFER_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Contains buffer structures for these predefined names: * _FDE, _GRT, _GTM, _PLD, _SRT @@ -232,4 +234,6 @@ struct acpi_pld_info { #define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK) #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */ +#pragma pack(pop) /* Restore original struct packing */ + #endif /* ACBUFFER_H */ diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h index 932a60d6ed82..d8a0ba8f88a5 100644 --- a/include/acpi/acconfig.h +++ b/include/acpi/acconfig.h @@ -44,6 +44,8 @@ #ifndef _ACCONFIG_H #define _ACCONFIG_H +#pragma pack(push) /* Set default struct packing */ + /****************************************************************************** * * Configuration options @@ -229,4 +231,6 @@ #define ACPI_DEBUGGER_COMMAND_PROMPT '-' #define ACPI_DEBUGGER_EXECUTE_PROMPT '%' +#pragma pack(pop) /* Restore original struct packing */ + #endif /* _ACCONFIG_H */ diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h index 8b06e4c1dd5d..f0bcb96b1598 100644 --- a/include/acpi/acexcep.h +++ b/include/acpi/acexcep.h @@ -44,6 +44,8 @@ #ifndef __ACEXCEP_H__ #define __ACEXCEP_H__ +#pragma pack(push) /* Set default struct packing */ + /* This module contains all possible exception codes for acpi_status */ /* @@ -377,4 +379,6 @@ static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = { #endif /* EXCEPTION_TABLE */ +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACEXCEP_H__ */ diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h index 1baae6edda89..247636fb51a5 100644 --- a/include/acpi/acoutput.h +++ b/include/acpi/acoutput.h @@ -44,6 +44,8 @@ #ifndef __ACOUTPUT_H__ #define __ACOUTPUT_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Debug levels and component IDs. These are used to control the * granularity of the output of the ACPI_DEBUG_PRINT macro -- on a @@ -456,4 +458,6 @@ #endif /* ACPI_DEBUG_OUTPUT */ +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACOUTPUT_H__ */ diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h index f6f5f8af2112..a4a2cd39aea9 100644 --- a/include/acpi/acpiosxf.h +++ b/include/acpi/acpiosxf.h @@ -49,6 +49,8 @@ #include #include +#pragma pack(push) /* Set default struct packing */ + /* Types for acpi_os_execute */ typedef enum { @@ -399,4 +401,6 @@ char *acpi_os_get_next_filename(void *dir_handle); void acpi_os_close_directory(void *dir_handle); #endif +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACPIOSXF_H__ */ diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 51cdf1bbb862..efa767ffe904 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -55,6 +55,8 @@ extern u8 acpi_gbl_permanent_mmap; +#pragma pack(push) /* Set default struct packing */ + /* * Globals that are publically available */ @@ -580,4 +582,6 @@ acpi_debug_print_raw(u32 requested_debug_level, u32 component_id, const char *format, ...); #endif +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACXFACE_H__ */ diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h index eb760ca0b2e0..3c83a79c583f 100644 --- a/include/acpi/acrestyp.h +++ b/include/acpi/acrestyp.h @@ -44,6 +44,8 @@ #ifndef __ACRESTYP_H__ #define __ACRESTYP_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Definitions for Resource Attributes */ @@ -610,4 +612,6 @@ struct acpi_pci_routing_table { char source[4]; /* pad to 64 bits so sizeof() works in all cases */ }; +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACRESTYP_H__ */ diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index 3b30e36b53b5..b32a33f1c2df 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -44,6 +44,8 @@ #ifndef __ACTBL_H__ #define __ACTBL_H__ +#pragma pack(push) /* Set default struct packing */ + /******************************************************************************* * * Fundamental ACPI tables @@ -404,4 +406,6 @@ struct acpi_table_desc { #define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control)) #define ACPI_FADT_V5_SIZE (u32) (sizeof (struct acpi_table_fadt)) +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACTBL_H__ */ diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index 212c65de75df..b7f0b0c6ff66 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -44,6 +44,8 @@ #ifndef __ACTBL1_H__ #define __ACTBL1_H__ +#pragma pack(push) /* Set default struct packing */ + /******************************************************************************* * * Additional ACPI Tables (1) @@ -972,8 +974,6 @@ struct acpi_srat_x2apic_cpu_affinity { #define ACPI_SRAT_CPU_ENABLED (1) /* 00: Use affinity structure */ -/* Reset to default packing */ - -#pragma pack() +#pragma pack(pop) /* Restore original struct packing */ #endif /* __ACTBL1_H__ */ diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index f3372441e3a5..89a26135745b 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -44,6 +44,8 @@ #ifndef __ACTBL2_H__ #define __ACTBL2_H__ +#pragma pack(push) /* Set default struct packing */ + /******************************************************************************* * * Additional ACPI Tables (2) @@ -1229,8 +1231,6 @@ struct acpi_table_wdrt { u8 units; }; -/* Reset to default packing */ - -#pragma pack() +#pragma pack(pop) /* Restore original struct packing */ #endif /* __ACTBL2_H__ */ diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index c2295cc4a5c0..85ebeea02b81 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -44,6 +44,8 @@ #ifndef __ACTBL3_H__ #define __ACTBL3_H__ +#pragma pack(push) /* Set default struct packing */ + /******************************************************************************* * * Additional ACPI Tables (3) @@ -622,8 +624,6 @@ struct acpi_tpm2_control { u64 response_address; }; -/* Reset to default packing */ - -#pragma pack() +#pragma pack(pop) /* Restore original struct packing */ #endif /* __ACTBL3_H__ */ diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index e76356574374..c28573da1662 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -44,6 +44,8 @@ #ifndef __ACTYPES_H__ #define __ACTYPES_H__ +#pragma pack(push) /* Set default struct packing */ + /* acpisrc:struct_defs -- for acpisrc conversion */ /* @@ -1223,4 +1225,6 @@ struct acpi_memory_list { #define ACPI_OSI_WIN_7 0x0B #define ACPI_OSI_WIN_8 0x0C +#pragma pack(pop) /* Restore original struct packing */ + #endif /* __ACTYPES_H__ */ -- cgit v1.2.3 From 5e7f18334f9980943365c07502630b5e3223839c Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:28:44 +0800 Subject: ACPICA: Predefined names: Add support for the _PRP method. This is not an official predefined name yet, but we add it to assist with development. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acpredef.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index 01b9eaaa982d..393826bee42d 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -700,6 +700,12 @@ const union acpi_predefined_info acpi_gbl_predefined_methods[] = { METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */ PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0), + {{"_PRP", METHOD_0ARGS, + METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each: 1 Str, 1 Int/Str/Pkg */ + PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_STRING, 1, + ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | + ACPI_RTYPE_PACKAGE, 1, 0), + {{"_PRS", METHOD_0ARGS, METHOD_RETURNS(ACPI_RTYPE_BUFFER)}}, -- cgit v1.2.3 From 9ad4caf3f846544b4e2a00674dd3055a8762d5dd Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 26 Feb 2014 10:28:59 +0800 Subject: ACPICA: Update conditional compilation flags for resource dump functions. Corrects ACPI_DISASSEMBLER to the compile conditions. The wrong condition was introduced by this commit: Commit: 3334861b1e9947631230b573eba27bcd778b93c8 Subject: ACPICA: Update the conditions to enable the utility resource dump strings. This was detected in the ACPICA upstream. Linux is not affected by the wrong commit as the disassembler is not shipped in the Linux. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/rsdump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c index 524c5a5300b8..c3c56b5a9788 100644 --- a/drivers/acpi/acpica/rsdump.c +++ b/drivers/acpi/acpica/rsdump.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_RESOURCES ACPI_MODULE_NAME("rsdump") -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBER) || defined(ACPI_DEBUGGER) +#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUGGER) /* Local prototypes */ static void acpi_rs_out_string(char *title, char *value); -- cgit v1.2.3 From 83130649302a238c8a42322444468430aa97a1fd Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 26 Feb 2014 10:29:31 +0800 Subject: ACPICA: Properly handle NULL entries in _PRT return packages. This change enables proper handling of NULL package entries in a _PRT return value, during construction of the PCI routing table. Lv Zheng. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/rscreate.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c index ca62804178bd..f4cd6cad6607 100644 --- a/drivers/acpi/acpica/rscreate.c +++ b/drivers/acpi/acpica/rscreate.c @@ -292,7 +292,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 1) First subobject: Dereference the PRT.Address */ obj_desc = sub_object_list[0]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].Address) Need Integer, found %s", index, @@ -305,7 +305,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 2) Second subobject: Dereference the PRT.Pin */ obj_desc = sub_object_list[1]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].Pin) Need Integer, found %s", index, @@ -394,7 +394,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 4) Fourth subobject: Dereference the PRT.source_index */ obj_desc = sub_object_list[3]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].SourceIndex) Need Integer, found %s", index, -- cgit v1.2.3 From 61db45ca21630f5ab7f678d54c5d969c21647854 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 26 Feb 2014 10:29:40 +0800 Subject: ACPICA: Restore code that repairs NULL package elements in return values. The original code was lost accidently, it was not generated along with the following commit of mechanism improvements and thus not get merged: Commit: d5a36100f62fa6db5541344e08b361b34e9114c5 Subject: ACPICA: Add mechanism for early object repairs on a per-name basis Adds the framework to allow object repairs very early in the return object analysis. Enables repairs like string->unicode, etc. This patch restores the implementation of the NULL element repair code for ACPI_RTYPE_NONE. In the original design, ACPI_RTYPE_NONE is defined to collect simple NULL object repairs. Lv Zheng. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=67901 Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Cc: 3.10+ # 3.10+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/nsrepair.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 904f7c3e8a0d..21b6402e5245 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -207,13 +207,30 @@ acpi_ns_simple_repair(struct acpi_evaluate_info *info, * this predefined name. Either one return value is expected, or none, * for both methods and other objects. * - * Exit now if there is no return object. Warning if one was expected. + * Try to fix if there was no return object. Warning if failed to fix. */ if (!return_object) { if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) { - ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, - ACPI_WARN_ALWAYS, - "Missing expected return value")); + if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Found unexpected NULL package element")); + + status = + acpi_ns_repair_null_element(info, + expected_btypes, + package_index, + return_object_ptr); + if (ACPI_SUCCESS(status)) { + return (AE_OK); /* Repair was successful */ + } + } else { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Missing expected return value")); + } return (AE_AML_NO_RETURN_VALUE); } -- cgit v1.2.3 From 1c3c2a545dc06e606c6cbbcb7ab722bf3b2cb668 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:30:25 +0800 Subject: ACPICA: Harden _PRT repair code; check for minimum package length. This change prevents a fault during the repair by checking up front if the _PRT subpackage contains the minimum number of elements (4). Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/nsrepair2.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index 53b4b42a13f2..c57cd4aa357d 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -611,6 +611,7 @@ acpi_ns_repair_PRT(struct acpi_evaluate_info *info, union acpi_operand_object **top_object_list; union acpi_operand_object **sub_object_list; union acpi_operand_object *obj_desc; + union acpi_operand_object *sub_package; u32 element_count; u32 index; @@ -620,7 +621,12 @@ acpi_ns_repair_PRT(struct acpi_evaluate_info *info, element_count = package_object->package.count; for (index = 0; index < element_count; index++) { - sub_object_list = (*top_object_list)->package.elements; + sub_package = *top_object_list; + sub_object_list = sub_package->package.elements; + + if (sub_package->package.count < 4) { /* Minimum required element count */ + return (AE_OK); + } /* * If the BIOS has erroneously reversed the _PRT source_name (index 2) -- cgit v1.2.3 From 69e6bb6898df3589bde7655aae26e254792a2d80 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:30:43 +0800 Subject: ACPICA: Do not abort _PRT repair on a single subpackage failure. Always examine all subpackages for reversed entries. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/nsrepair2.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index c57cd4aa357d..18012140de1f 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -620,12 +620,16 @@ acpi_ns_repair_PRT(struct acpi_evaluate_info *info, top_object_list = package_object->package.elements; element_count = package_object->package.count; - for (index = 0; index < element_count; index++) { + /* Examine each subpackage */ + + for (index = 0; index < element_count; index++, top_object_list++) { sub_package = *top_object_list; sub_object_list = sub_package->package.elements; - if (sub_package->package.count < 4) { /* Minimum required element count */ - return (AE_OK); + /* Check for minimum required element count */ + + if (sub_package->package.count < 4) { + continue; } /* @@ -640,15 +644,12 @@ acpi_ns_repair_PRT(struct acpi_evaluate_info *info, sub_object_list[2] = obj_desc; info->return_flags |= ACPI_OBJECT_REPAIRED; - ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, info->node_flags, "PRT[%X]: Fixed reversed SourceName and SourceIndex", index)); } - - /* Point to the next union acpi_operand_object in the top level package */ - - top_object_list++; } return (AE_OK); -- cgit v1.2.3 From 8a5c74a175ac117e55a50b489ee041f40ff8866b Mon Sep 17 00:00:00 2001 From: Rashika Kheria Date: Wed, 26 Feb 2014 22:12:42 +0530 Subject: cpufreq: Mark function as static in cpufreq.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Mark function as static in cpufreq.c because it is not used outside this file. This eliminates the following warning in cpufreq.c: drivers/cpufreq/cpufreq.c:355:9: warning: no previous prototype for ‘show_boost’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index c755b5fe317c..5815af50d3de 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -352,7 +352,7 @@ EXPORT_SYMBOL_GPL(cpufreq_notify_post_transition); /********************************************************************* * SYSFS INTERFACE * *********************************************************************/ -ssize_t show_boost(struct kobject *kobj, +static ssize_t show_boost(struct kobject *kobj, struct attribute *attr, char *buf) { return sprintf(buf, "%d\n", cpufreq_driver->boost_enabled); -- cgit v1.2.3 From 7d1af287320b41909c070f68ffe1591060a32769 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 27 Feb 2014 19:26:44 +0100 Subject: PM / domains: Turn latency warning into debug message If devices don't provide latency data, this warning can be quite noisy until the pm domain was enabled and disabled a few times. Turn this warning into a debug message. Signed-off-by: Philipp Zabel Reviewed-by: Ulf Hansson Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- drivers/base/power/domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index bfb8955c406c..dc127e5dec4b 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -42,7 +42,7 @@ struct gpd_timing_data *__td = &dev_gpd_data(dev)->td; \ if (!__retval && __elapsed > __td->field) { \ __td->field = __elapsed; \ - dev_warn(dev, name " latency exceeded, new value %lld ns\n", \ + dev_dbg(dev, name " latency exceeded, new value %lld ns\n", \ __elapsed); \ genpd->max_off_time_changed = true; \ __td->constraint_changed = true; \ -- cgit v1.2.3 From 52e7e816420383a340cfb6c3ffd12477c3c80b76 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Mon, 24 Feb 2014 11:27:57 +0900 Subject: cpufreq: enable ARM drivers on arm64 Enable cpufreq and power kconfig menus on arm64 along with arm cpufreq drivers. The power menu is needed for OPP support. At least on Calxeda systems, the same cpufreq driver is used for arm and arm64 based systems. Signed-off-by: Rob Herring Acked-by: Viresh Kumar Signed-off-by: Mark Brown Signed-off-by: Rafael J. Wysocki --- arch/arm64/Kconfig | 8 ++++++++ drivers/cpufreq/Kconfig | 2 +- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 27bbcfc7202a..c6e2f5bb1a7b 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -303,6 +303,14 @@ source "drivers/cpuidle/Kconfig" endmenu +menu "Power management options" + +source "kernel/power/Kconfig" + +source "drivers/cpufreq/Kconfig" + +endmenu + source "net/Kconfig" source "drivers/Kconfig" diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 4b029c0944af..1fbe11f2a146 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -200,7 +200,7 @@ source "drivers/cpufreq/Kconfig.x86" endmenu menu "ARM CPU frequency scaling drivers" -depends on ARM +depends on ARM || ARM64 source "drivers/cpufreq/Kconfig.arm" endmenu -- cgit v1.2.3 From 04b73469750050290cb0a773e7ecf2358d65f6d5 Mon Sep 17 00:00:00 2001 From: Rashika Kheria Date: Thu, 27 Feb 2014 17:13:53 +0530 Subject: PM / sleep: Move prototype declaration to header file kernel/power/power.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move prototype declaration of function to header file kernel/power/power.h because it is used by more than one file. This eliminates the following warning in kernel/power/snapshot.c: kernel/power/snapshot.c:1588:16: warning: no previous prototype for ‘swsusp_save’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- kernel/power/power.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/power/power.h b/kernel/power/power.h index 7d4b7ffb3c1d..1ca753106557 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -49,6 +49,8 @@ static inline char *check_image_kernel(struct swsusp_info *info) */ #define SPARE_PAGES ((1024 * 1024) >> PAGE_SHIFT) +asmlinkage int swsusp_save(void); + /* kernel/power/hibernate.c */ extern bool freezer_test_done; -- cgit v1.2.3 From 6c5be2916565e8c710e9f0f7b43cf65a3ba39dd9 Mon Sep 17 00:00:00 2001 From: Rashika Kheria Date: Thu, 27 Feb 2014 17:15:54 +0530 Subject: PM / wakeup: Include appropriate header file in kernel/power/wakelock.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Include appropriate header file kernel/power/power.h in kernel/power/wakelock.c because it has prototype declaration of function defined in kernel/power/wakelock.c. This eliminates the following warning in kernel/power/wakelock.c: kernel/power/wakelock.c:34:9: warning: no previous prototype for ‘pm_show_wakelocks’ [-Wmissing-prototypes] kernel/power/wakelock.c:184:5: warning: no previous prototype for ‘pm_wake_lock’ [-Wmissing-prototypes] kernel/power/wakelock.c:232:5: warning: no previous prototype for ‘pm_wake_unlock’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Signed-off-by: Rafael J. Wysocki --- kernel/power/wakelock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/power/wakelock.c b/kernel/power/wakelock.c index 8f50de394d22..019069c84ff6 100644 --- a/kernel/power/wakelock.c +++ b/kernel/power/wakelock.c @@ -18,6 +18,8 @@ #include #include +#include "power.h" + static DEFINE_MUTEX(wakelocks_lock); struct wakelock { -- cgit v1.2.3 From 421a5fa1a6cfc037a21220b638d4def6da7cbabe Mon Sep 17 00:00:00 2001 From: Sebastian Capella Date: Fri, 14 Feb 2014 14:52:56 -0800 Subject: PM / hibernate: use name_to_dev_t to parse resume Use the name_to_dev_t call to parse the device name echo'd to to /sys/power/resume. This imitates the method used in hibernate.c in software_resume, and allows the resume partition to be specified using other equivalent device formats as well. By allowing /sys/debug/resume to accept the same syntax as the resume=device parameter, we can parse the resume=device in the init script and use the resume device directly from the kernel command line. Signed-off-by: Sebastian Capella Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- kernel/power/hibernate.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 37170d4dd9a6..f4f2073711d3 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -973,16 +973,20 @@ static ssize_t resume_show(struct kobject *kobj, struct kobj_attribute *attr, static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t n) { - unsigned int maj, min; dev_t res; - int ret = -EINVAL; + int len = n; + char *name; - if (sscanf(buf, "%u:%u", &maj, &min) != 2) - goto out; + if (len && buf[len-1] == '\n') + len--; + name = kstrndup(buf, len, GFP_KERNEL); + if (!name) + return -ENOMEM; - res = MKDEV(maj,min); - if (maj != MAJOR(res) || min != MINOR(res)) - goto out; + res = name_to_dev_t(name); + kfree(name); + if (!res) + return -EINVAL; lock_system_sleep(); swsusp_resume_device = res; @@ -990,9 +994,7 @@ static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr, printk(KERN_INFO "PM: Starting manual resume from disk\n"); noresume = 0; software_resume(); - ret = n; - out: - return ret; + return n; } power_attr(resume); -- cgit v1.2.3 From 3e54d1518f8f31effd487b7609c6779f62b0c04f Mon Sep 17 00:00:00 2001 From: "Lad, Prabhakar" Date: Thu, 20 Feb 2014 13:30:32 +0530 Subject: PM: fix typo in comment Signed-off-by: Lad, Prabhakar Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/pm.h b/include/linux/pm.h index f23a4f1c1bfb..3540ea99717e 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -352,7 +352,7 @@ const struct dev_pm_ops name = { \ /* * Use this for defining a set of PM operations to be used in all situations - * (sustem suspend, hibernation or runtime PM). + * (system suspend, hibernation or runtime PM). * NOTE: In general, system suspend callbacks, .suspend() and .resume(), should * be different from the corresponding runtime PM callbacks, .runtime_suspend(), * and .runtime_resume(), because .runtime_suspend() always works on an already -- cgit v1.2.3 From 0a9efc4d91df7b18fb3e97c24ee85a1529618899 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Wed, 19 Feb 2014 13:09:21 +0100 Subject: PM / sleep: Set pm_generic functions to NULL for !CONFIG_PM_SLEEP Previously only a subset of the functions were defined and set to NULL while !CONFIG_PM_SLEEP. Let's make them all available so they can be used no matter of CONFIG_PM_SLEEP or not. Signed-off-by: Ulf Hansson Reviewed-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/include/linux/pm.h b/include/linux/pm.h index 3540ea99717e..6fffbcd7bc37 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -719,14 +719,26 @@ static inline void dpm_for_each_dev(void *data, void (*fn)(struct device *, void { } -#define pm_generic_prepare NULL -#define pm_generic_suspend NULL -#define pm_generic_resume NULL -#define pm_generic_freeze NULL -#define pm_generic_thaw NULL -#define pm_generic_restore NULL -#define pm_generic_poweroff NULL -#define pm_generic_complete NULL +#define pm_generic_prepare NULL +#define pm_generic_suspend_late NULL +#define pm_generic_suspend_noirq NULL +#define pm_generic_suspend NULL +#define pm_generic_resume_early NULL +#define pm_generic_resume_noirq NULL +#define pm_generic_resume NULL +#define pm_generic_freeze_noirq NULL +#define pm_generic_freeze_late NULL +#define pm_generic_freeze NULL +#define pm_generic_thaw_noirq NULL +#define pm_generic_thaw_early NULL +#define pm_generic_thaw NULL +#define pm_generic_restore_noirq NULL +#define pm_generic_restore_early NULL +#define pm_generic_restore NULL +#define pm_generic_poweroff_noirq NULL +#define pm_generic_poweroff_late NULL +#define pm_generic_poweroff NULL +#define pm_generic_complete NULL #endif /* !CONFIG_PM_SLEEP */ /* How to reorder dpm_list after device_move() */ -- cgit v1.2.3 From bd0fa9bb455d9b58ec2d7a36cd08afed9e3411b4 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 25 Feb 2014 14:29:44 +0530 Subject: cpufreq: Return error if ->get() failed in cpufreq_update_policy() cpufreq_update_policy() calls cpufreq_driver->get() to get current frequency of a CPU and it is not supposed to fail or return zero. Return error in case that happens. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 5815af50d3de..56b7b1be352d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2139,6 +2139,11 @@ int cpufreq_update_policy(unsigned int cpu) */ if (cpufreq_driver->get) { new_policy.cur = cpufreq_driver->get(cpu); + if (WARN_ON(!new_policy.cur)) { + ret = -EIO; + goto no_policy; + } + if (!policy->cur) { pr_debug("Driver did not initialize current freq"); policy->cur = new_policy.cur; -- cgit v1.2.3 From 5f59df79837bb809f3945613aba5519cd9755a53 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Sat, 1 Mar 2014 11:56:04 +0100 Subject: PM / runtime: Fetch runtime PM callbacks using a macro While fetching the proper runtime PM callback, we walk the hierarchy of device's power domains, subsystems and drivers. This is common for rpm_suspend(), rpm_idle() and rpm_resume(). Let's clean up the code by using a macro that handles this. Signed-off-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki --- drivers/base/power/runtime.c | 78 ++++++++++++++++++++++---------------------- 1 file changed, 39 insertions(+), 39 deletions(-) diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 72e00e66ecc5..ac495b1357fa 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -13,6 +13,42 @@ #include #include "power.h" +#define RPM_GET_CALLBACK(dev, cb) \ +({ \ + int (*__rpm_cb)(struct device *__d); \ + \ + if (dev->pm_domain) \ + __rpm_cb = dev->pm_domain->ops.cb; \ + else if (dev->type && dev->type->pm) \ + __rpm_cb = dev->type->pm->cb; \ + else if (dev->class && dev->class->pm) \ + __rpm_cb = dev->class->pm->cb; \ + else if (dev->bus && dev->bus->pm) \ + __rpm_cb = dev->bus->pm->cb; \ + else \ + __rpm_cb = NULL; \ + \ + if (!__rpm_cb && dev->driver && dev->driver->pm) \ + __rpm_cb = dev->driver->pm->cb; \ + \ + __rpm_cb; \ +}) + +static int (*rpm_get_suspend_cb(struct device *dev))(struct device *) +{ + return RPM_GET_CALLBACK(dev, runtime_suspend); +} + +static int (*rpm_get_resume_cb(struct device *dev))(struct device *) +{ + return RPM_GET_CALLBACK(dev, runtime_resume); +} + +static int (*rpm_get_idle_cb(struct device *dev))(struct device *) +{ + return RPM_GET_CALLBACK(dev, runtime_idle); +} + static int rpm_resume(struct device *dev, int rpmflags); static int rpm_suspend(struct device *dev, int rpmflags); @@ -310,19 +346,7 @@ static int rpm_idle(struct device *dev, int rpmflags) dev->power.idle_notification = true; - if (dev->pm_domain) - callback = dev->pm_domain->ops.runtime_idle; - else if (dev->type && dev->type->pm) - callback = dev->type->pm->runtime_idle; - else if (dev->class && dev->class->pm) - callback = dev->class->pm->runtime_idle; - else if (dev->bus && dev->bus->pm) - callback = dev->bus->pm->runtime_idle; - else - callback = NULL; - - if (!callback && dev->driver && dev->driver->pm) - callback = dev->driver->pm->runtime_idle; + callback = rpm_get_idle_cb(dev); if (callback) retval = __rpm_callback(callback, dev); @@ -492,19 +516,7 @@ static int rpm_suspend(struct device *dev, int rpmflags) __update_runtime_status(dev, RPM_SUSPENDING); - if (dev->pm_domain) - callback = dev->pm_domain->ops.runtime_suspend; - else if (dev->type && dev->type->pm) - callback = dev->type->pm->runtime_suspend; - else if (dev->class && dev->class->pm) - callback = dev->class->pm->runtime_suspend; - else if (dev->bus && dev->bus->pm) - callback = dev->bus->pm->runtime_suspend; - else - callback = NULL; - - if (!callback && dev->driver && dev->driver->pm) - callback = dev->driver->pm->runtime_suspend; + callback = rpm_get_suspend_cb(dev); retval = rpm_callback(callback, dev); if (retval) @@ -724,19 +736,7 @@ static int rpm_resume(struct device *dev, int rpmflags) __update_runtime_status(dev, RPM_RESUMING); - if (dev->pm_domain) - callback = dev->pm_domain->ops.runtime_resume; - else if (dev->type && dev->type->pm) - callback = dev->type->pm->runtime_resume; - else if (dev->class && dev->class->pm) - callback = dev->class->pm->runtime_resume; - else if (dev->bus && dev->bus->pm) - callback = dev->bus->pm->runtime_resume; - else - callback = NULL; - - if (!callback && dev->driver && dev->driver->pm) - callback = dev->driver->pm->runtime_resume; + callback = rpm_get_resume_cb(dev); retval = rpm_callback(callback, dev); if (retval) { -- cgit v1.2.3 From 37f204164dfb0186a0caf20bc3e3120080bcd788 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Sat, 1 Mar 2014 11:56:05 +0100 Subject: PM: Add pm_runtime_suspend|resume_force functions This patch provides two new runtime PM helper functions which intend to be used from system suspend/resume callbacks, to make sure devices are put into low power state during system suspend and brought back to full power at system resume. The prerequisite is to have all levels of a device's runtime PM callbacks to be defined through the SET_PM_RUNTIME_PM_OPS macro, which means these are available for CONFIG_PM. By using the new runtime PM helper functions especially the two scenarios below will be addressed. 1) The PM core prevents .runtime_suspend callbacks from being invoked during system suspend. That means even for a runtime PM centric subsystem and driver, the device needs to be put into low power state from a system suspend callback. Otherwise it may very well be left in full power state (runtime resumed) while the system is suspended. By using the new helper functions, we make sure to walk the hierarchy of a device's power domain, subsystem and driver. 2) Subsystems and drivers need to cope with all the combinations of CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME. The two new helper functions smothly addresses this. Signed-off-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki --- drivers/base/power/Makefile | 3 +- drivers/base/power/runtime.c | 84 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/pm_runtime.h | 4 +++ 3 files changed, 89 insertions(+), 2 deletions(-) diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile index 2e58ebb1f6c0..1cb8544598d5 100644 --- a/drivers/base/power/Makefile +++ b/drivers/base/power/Makefile @@ -1,6 +1,5 @@ -obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o +obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o runtime.o obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o -obj-$(CONFIG_PM_RUNTIME) += runtime.o obj-$(CONFIG_PM_TRACE_RTC) += trace.o obj-$(CONFIG_PM_OPP) += opp.o obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index ac495b1357fa..4776cf528d08 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -44,6 +44,7 @@ static int (*rpm_get_resume_cb(struct device *dev))(struct device *) return RPM_GET_CALLBACK(dev, runtime_resume); } +#ifdef CONFIG_PM_RUNTIME static int (*rpm_get_idle_cb(struct device *dev))(struct device *) { return RPM_GET_CALLBACK(dev, runtime_idle); @@ -1401,3 +1402,86 @@ void pm_runtime_remove(struct device *dev) if (dev->power.irq_safe && dev->parent) pm_runtime_put(dev->parent); } +#endif + +/** + * pm_runtime_force_suspend - Force a device into suspend state if needed. + * @dev: Device to suspend. + * + * Disable runtime PM so we safely can check the device's runtime PM status and + * if it is active, invoke it's .runtime_suspend callback to bring it into + * suspend state. Keep runtime PM disabled to preserve the state unless we + * encounter errors. + * + * Typically this function may be invoked from a system suspend callback to make + * sure the device is put into low power state. + */ +int pm_runtime_force_suspend(struct device *dev) +{ + int (*callback)(struct device *); + int ret = 0; + + pm_runtime_disable(dev); + + /* + * Note that pm_runtime_status_suspended() returns false while + * !CONFIG_PM_RUNTIME, which means the device will be put into low + * power state. + */ + if (pm_runtime_status_suspended(dev)) + return 0; + + callback = rpm_get_suspend_cb(dev); + + if (!callback) { + ret = -ENOSYS; + goto err; + } + + ret = callback(dev); + if (ret) + goto err; + + pm_runtime_set_suspended(dev); + return 0; +err: + pm_runtime_enable(dev); + return ret; +} +EXPORT_SYMBOL_GPL(pm_runtime_force_suspend); + +/** + * pm_runtime_force_resume - Force a device into resume state. + * @dev: Device to resume. + * + * Prior invoking this function we expect the user to have brought the device + * into low power state by a call to pm_runtime_force_suspend(). Here we reverse + * those actions and brings the device into full power. We update the runtime PM + * status and re-enables runtime PM. + * + * Typically this function may be invoked from a system resume callback to make + * sure the device is put into full power state. + */ +int pm_runtime_force_resume(struct device *dev) +{ + int (*callback)(struct device *); + int ret = 0; + + callback = rpm_get_resume_cb(dev); + + if (!callback) { + ret = -ENOSYS; + goto out; + } + + ret = callback(dev); + if (ret) + goto out; + + pm_runtime_set_active(dev); + pm_runtime_mark_last_busy(dev); +out: + pm_runtime_enable(dev); + return ret; +} +EXPORT_SYMBOL_GPL(pm_runtime_force_resume); diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 16c9a62fa1c0..2a5897a4afbc 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -26,9 +26,13 @@ #ifdef CONFIG_PM extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); +extern int pm_runtime_force_suspend(struct device *dev); +extern int pm_runtime_force_resume(struct device *dev); #else static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } +static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } +static inline int pm_runtime_force_resume(struct device *dev) { return 0; } #endif #ifdef CONFIG_PM_RUNTIME -- cgit v1.2.3 From d37e2b764499e092ebc493d6f980827feb952e23 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Wed, 12 Feb 2014 10:01:04 -0800 Subject: intel_pstate: remove unneeded sample buffers Remove unneeded sample buffers, intel_pstate operates on the most recent sample only. This save some memory and make the code more readable. Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 2cd36b9297f3..41f9eb295f0c 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -99,8 +99,7 @@ struct cpudata { u64 prev_aperf; u64 prev_mperf; unsigned long long prev_tsc; - int sample_ptr; - struct sample samples[SAMPLE_COUNT]; + struct sample sample; }; static struct cpudata **all_cpu_data; @@ -586,15 +585,14 @@ static inline void intel_pstate_sample(struct cpudata *cpu) mperf = mperf >> FRAC_BITS; tsc = tsc >> FRAC_BITS; - cpu->sample_ptr = (cpu->sample_ptr + 1) % SAMPLE_COUNT; - cpu->samples[cpu->sample_ptr].aperf = aperf; - cpu->samples[cpu->sample_ptr].mperf = mperf; - cpu->samples[cpu->sample_ptr].tsc = tsc; - cpu->samples[cpu->sample_ptr].aperf -= cpu->prev_aperf; - cpu->samples[cpu->sample_ptr].mperf -= cpu->prev_mperf; - cpu->samples[cpu->sample_ptr].tsc -= cpu->prev_tsc; + cpu->sample.aperf = aperf; + cpu->sample.mperf = mperf; + cpu->sample.tsc = tsc; + cpu->sample.aperf -= cpu->prev_aperf; + cpu->sample.mperf -= cpu->prev_mperf; + cpu->sample.tsc -= cpu->prev_tsc; - intel_pstate_calc_busy(cpu, &cpu->samples[cpu->sample_ptr]); + intel_pstate_calc_busy(cpu, &cpu->sample); cpu->prev_aperf = aperf; cpu->prev_mperf = mperf; @@ -614,7 +612,7 @@ static inline int32_t intel_pstate_get_scaled_busy(struct cpudata *cpu) { int32_t core_busy, max_pstate, current_pstate; - core_busy = cpu->samples[cpu->sample_ptr].core_pct_busy; + core_busy = cpu->sample.core_pct_busy; max_pstate = int_tofp(cpu->pstate.max_pstate); current_pstate = int_tofp(cpu->pstate.current_pstate); core_busy = mul_fp(core_busy, div_fp(max_pstate, current_pstate)); @@ -648,7 +646,7 @@ static void intel_pstate_timer_func(unsigned long __data) intel_pstate_sample(cpu); - sample = &cpu->samples[cpu->sample_ptr]; + sample = &cpu->sample; intel_pstate_adjust_busy_pstate(cpu); @@ -729,7 +727,7 @@ static unsigned int intel_pstate_get(unsigned int cpu_num) cpu = all_cpu_data[cpu_num]; if (!cpu) return 0; - sample = &cpu->samples[cpu->sample_ptr]; + sample = &cpu->sample; return sample->freq; } -- cgit v1.2.3 From d98d099b9fbb7bbb20a74efe5327322831c9c9a3 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Wed, 12 Feb 2014 10:01:05 -0800 Subject: intel_pstate: fix pid_reset to use fixed point values commit d253d2a526 (Improve accuracy by not truncating until final result), changed internal variables of the PID to be fixed point numbers. Update the pid_reset() to reflect this change. Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 41f9eb295f0c..9ab109c0f90c 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -153,7 +153,7 @@ static inline void pid_reset(struct _pid *pid, int setpoint, int busy, pid->setpoint = setpoint; pid->deadband = deadband; pid->integral = int_tofp(integral); - pid->last_err = setpoint - busy; + pid->last_err = int_tofp(setpoint) - int_tofp(busy); } static inline void pid_p_gain_set(struct _pid *pid, int percent) -- cgit v1.2.3 From b24a5b6512a6fb89f3b99b9b0f829b4448e62db0 Mon Sep 17 00:00:00 2001 From: Saravana Kannan Date: Thu, 27 Feb 2014 17:58:34 -0800 Subject: cpufreq: stats: Remove redundant cpufreq_cpu_get() call __cpufreq_stats_create_table always gets pass the valid and real policy struct. So, there's no need to call cpufreq_cpu_get() to get the policy again. Acked-by: Viresh Kumar Signed-off-by: Saravana Kannan Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_stats.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 5793e1447fb1..e4bd27f1a9d8 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -185,7 +185,6 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, { unsigned int i, j, count = 0, ret = 0; struct cpufreq_stats *stat; - struct cpufreq_policy *current_policy; unsigned int alloc_size; unsigned int cpu = policy->cpu; if (per_cpu(cpufreq_stats_table, cpu)) @@ -194,13 +193,7 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, if ((stat) == NULL) return -ENOMEM; - current_policy = cpufreq_cpu_get(cpu); - if (current_policy == NULL) { - ret = -EINVAL; - goto error_get_fail; - } - - ret = sysfs_create_group(¤t_policy->kobj, &stats_attr_group); + ret = sysfs_create_group(&policy->kobj, &stats_attr_group); if (ret) goto error_out; @@ -243,11 +236,8 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, stat->last_time = get_jiffies_64(); stat->last_index = freq_table_get_index(stat, policy->cur); spin_unlock(&cpufreq_stats_lock); - cpufreq_cpu_put(current_policy); return 0; error_out: - cpufreq_cpu_put(current_policy); -error_get_fail: kfree(stat); per_cpu(cpufreq_stats_table, cpu) = NULL; return ret; -- cgit v1.2.3 From 0b7528d963e7dda51dd07fa7b1f14a9bf03b1cee Mon Sep 17 00:00:00 2001 From: Saravana Kannan Date: Thu, 27 Feb 2014 17:58:35 -0800 Subject: cpufreq: stats: Fix error handling in __cpufreq_stats_create_table() Remove sysfs group if __cpufreq_stats_create_table() fails after creating one. Acked-by: Viresh Kumar Signed-off-by: Saravana Kannan Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_stats.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index e4bd27f1a9d8..c52b44071100 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -216,7 +216,7 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, stat->time_in_state = kzalloc(alloc_size, GFP_KERNEL); if (!stat->time_in_state) { ret = -ENOMEM; - goto error_out; + goto error_alloc; } stat->freq_table = (unsigned int *)(stat->time_in_state + count); @@ -237,6 +237,8 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, stat->last_index = freq_table_get_index(stat, policy->cur); spin_unlock(&cpufreq_stats_lock); return 0; +error_alloc: + sysfs_remove_group(&policy->kobj, &stats_attr_group); error_out: kfree(stat); per_cpu(cpufreq_stats_table, cpu) = NULL; -- cgit v1.2.3 From ad4c2302c20a6906eb2f10defdb0e982bab5eb0b Mon Sep 17 00:00:00 2001 From: Saravana Kannan Date: Thu, 27 Feb 2014 17:58:36 -0800 Subject: cpufreq: stats: Refactor common code into __cpufreq_stats_create_table() cpufreq_frequency_get_table() is called from all callers of __cpufreq_stats_create_table(). So, move it inside. Suggested-by: Viresh Kumar Acked-by: Viresh Kumar Signed-off-by: Saravana Kannan Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_stats.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index c52b44071100..eb214d83ad6b 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -180,13 +180,18 @@ static void cpufreq_stats_free_table(unsigned int cpu) cpufreq_cpu_put(policy); } -static int __cpufreq_stats_create_table(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *table) +static int __cpufreq_stats_create_table(struct cpufreq_policy *policy) { unsigned int i, j, count = 0, ret = 0; struct cpufreq_stats *stat; unsigned int alloc_size; unsigned int cpu = policy->cpu; + struct cpufreq_frequency_table *table; + + table = cpufreq_frequency_get_table(cpu); + if (unlikely(!table)) + return 0; + if (per_cpu(cpufreq_stats_table, cpu)) return -EBUSY; stat = kzalloc(sizeof(*stat), GFP_KERNEL); @@ -248,7 +253,6 @@ error_out: static void cpufreq_stats_create_table(unsigned int cpu) { struct cpufreq_policy *policy; - struct cpufreq_frequency_table *table; /* * "likely(!policy)" because normally cpufreq_stats will be registered @@ -258,9 +262,7 @@ static void cpufreq_stats_create_table(unsigned int cpu) if (likely(!policy)) return; - table = cpufreq_frequency_get_table(policy->cpu); - if (likely(table)) - __cpufreq_stats_create_table(policy, table); + __cpufreq_stats_create_table(policy); cpufreq_cpu_put(policy); } @@ -283,20 +285,14 @@ static int cpufreq_stat_notifier_policy(struct notifier_block *nb, { int ret = 0; struct cpufreq_policy *policy = data; - struct cpufreq_frequency_table *table; - unsigned int cpu = policy->cpu; if (val == CPUFREQ_UPDATE_POLICY_CPU) { cpufreq_stats_update_policy_cpu(policy); return 0; } - table = cpufreq_frequency_get_table(cpu); - if (!table) - return 0; - if (val == CPUFREQ_CREATE_POLICY) - ret = __cpufreq_stats_create_table(policy, table); + ret = __cpufreq_stats_create_table(policy); else if (val == CPUFREQ_REMOVE_POLICY) __cpufreq_stats_free_table(policy); -- cgit v1.2.3 From 730bf5ebb4dfb3ec654bb6c270aa55de70ebf54d Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Thu, 20 Feb 2014 15:45:33 +0800 Subject: ACPI / tables: Replace printk with pr_* This patch just does some cleanup to replace printk with pr_*, and introduces pr_fmt() to remove all PREFIXs in tables.c, no functional change. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- drivers/acpi/tables.c | 128 ++++++++++++++++++++++---------------------------- 1 file changed, 55 insertions(+), 73 deletions(-) diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 5837f857ac2e..21782290df41 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -23,6 +23,8 @@ * */ +#define pr_fmt(fmt) "ACPI: " fmt + #include #include #include @@ -33,8 +35,6 @@ #include #include -#define PREFIX "ACPI: " - #define ACPI_MAX_TABLES 128 static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" }; @@ -55,10 +55,9 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_local_apic *p = (struct acpi_madt_local_apic *)header; - printk(KERN_INFO PREFIX - "LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n", - p->processor_id, p->id, - (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled"); + pr_info("LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n", + p->processor_id, p->id, + (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled"); } break; @@ -66,11 +65,9 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_local_x2apic *p = (struct acpi_madt_local_x2apic *)header; - printk(KERN_INFO PREFIX - "X2APIC (apic_id[0x%02x] uid[0x%02x] %s)\n", - p->local_apic_id, p->uid, - (p->lapic_flags & ACPI_MADT_ENABLED) ? - "enabled" : "disabled"); + pr_info("X2APIC (apic_id[0x%02x] uid[0x%02x] %s)\n", + p->local_apic_id, p->uid, + (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled"); } break; @@ -78,9 +75,8 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_io_apic *p = (struct acpi_madt_io_apic *)header; - printk(KERN_INFO PREFIX - "IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n", - p->id, p->address, p->global_irq_base); + pr_info("IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n", + p->id, p->address, p->global_irq_base); } break; @@ -88,18 +84,15 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_interrupt_override *p = (struct acpi_madt_interrupt_override *)header; - printk(KERN_INFO PREFIX - "INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n", - p->bus, p->source_irq, p->global_irq, - mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], - mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2]); + pr_info("INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n", + p->bus, p->source_irq, p->global_irq, + mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], + mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2]); if (p->inti_flags & ~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK)) - printk(KERN_INFO PREFIX - "INT_SRC_OVR unexpected reserved flags: 0x%x\n", - p->inti_flags & + pr_info("INT_SRC_OVR unexpected reserved flags: 0x%x\n", + p->inti_flags & ~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK)); - } break; @@ -107,11 +100,10 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_nmi_source *p = (struct acpi_madt_nmi_source *)header; - printk(KERN_INFO PREFIX - "NMI_SRC (%s %s global_irq %d)\n", - mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], - mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], - p->global_irq); + pr_info("NMI_SRC (%s %s global_irq %d)\n", + mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], + mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], + p->global_irq); } break; @@ -119,12 +111,11 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_local_apic_nmi *p = (struct acpi_madt_local_apic_nmi *)header; - printk(KERN_INFO PREFIX - "LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n", - p->processor_id, - mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK ], - mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], - p->lint); + pr_info("LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n", + p->processor_id, + mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK ], + mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], + p->lint); } break; @@ -137,12 +128,11 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) polarity = p->inti_flags & ACPI_MADT_POLARITY_MASK; trigger = (p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2; - printk(KERN_INFO PREFIX - "X2APIC_NMI (uid[0x%02x] %s %s lint[0x%x])\n", - p->uid, - mps_inti_flags_polarity[polarity], - mps_inti_flags_trigger[trigger], - p->lint); + pr_info("X2APIC_NMI (uid[0x%02x] %s %s lint[0x%x])\n", + p->uid, + mps_inti_flags_polarity[polarity], + mps_inti_flags_trigger[trigger], + p->lint); } break; @@ -150,9 +140,8 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_local_apic_override *p = (struct acpi_madt_local_apic_override *)header; - printk(KERN_INFO PREFIX - "LAPIC_ADDR_OVR (address[%p])\n", - (void *)(unsigned long)p->address); + pr_info("LAPIC_ADDR_OVR (address[%p])\n", + (void *)(unsigned long)p->address); } break; @@ -160,10 +149,9 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_io_sapic *p = (struct acpi_madt_io_sapic *)header; - printk(KERN_INFO PREFIX - "IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n", - p->id, (void *)(unsigned long)p->address, - p->global_irq_base); + pr_info("IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n", + p->id, (void *)(unsigned long)p->address, + p->global_irq_base); } break; @@ -171,10 +159,9 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_local_sapic *p = (struct acpi_madt_local_sapic *)header; - printk(KERN_INFO PREFIX - "LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n", - p->processor_id, p->id, p->eid, - (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled"); + pr_info("LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n", + p->processor_id, p->id, p->eid, + (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled"); } break; @@ -182,19 +169,17 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { struct acpi_madt_interrupt_source *p = (struct acpi_madt_interrupt_source *)header; - printk(KERN_INFO PREFIX - "PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n", - mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], - mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], - p->type, p->id, p->eid, p->io_sapic_vector, - p->global_irq); + pr_info("PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n", + mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK], + mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2], + p->type, p->id, p->eid, p->io_sapic_vector, + p->global_irq); } break; default: - printk(KERN_WARNING PREFIX - "Found unsupported MADT entry (type = 0x%x)\n", - header->type); + pr_warn("Found unsupported MADT entry (type = 0x%x)\n", + header->type); break; } } @@ -225,7 +210,7 @@ acpi_table_parse_entries(char *id, acpi_get_table_with_size(id, 0, &table_header, &tbl_size); if (!table_header) { - printk(KERN_WARNING PREFIX "%4.4s not present\n", id); + pr_warn("%4.4s not present\n", id); return -ENODEV; } @@ -248,7 +233,7 @@ acpi_table_parse_entries(char *id, * infinite loop. */ if (entry->length == 0) { - pr_err(PREFIX "[%4.4s:0x%02x] Invalid zero length\n", id, entry_id); + pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, entry_id); goto err; } @@ -256,8 +241,8 @@ acpi_table_parse_entries(char *id, ((unsigned long)entry + entry->length); } if (max_entries && count > max_entries) { - printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of " - "%i found\n", id, entry_id, count - max_entries, count); + pr_warn("[%4.4s:0x%02x] ignored %i entries of %i found\n", + id, entry_id, count - max_entries, count); } early_acpi_os_unmap_memory((char *)table_header, tbl_size); @@ -322,13 +307,11 @@ static void __init check_multiple_madt(void) acpi_get_table_with_size(ACPI_SIG_MADT, 2, &table, &tbl_size); if (table) { - printk(KERN_WARNING PREFIX - "BIOS bug: multiple APIC/MADT found," - " using %d\n", acpi_apic_instance); - printk(KERN_WARNING PREFIX - "If \"acpi_apic_instance=%d\" works better, " - "notify linux-acpi@vger.kernel.org\n", - acpi_apic_instance ? 0 : 2); + pr_warn("BIOS bug: multiple APIC/MADT found, using %d\n", + acpi_apic_instance); + pr_warn("If \"acpi_apic_instance=%d\" works better, " + "notify linux-acpi@vger.kernel.org\n", + acpi_apic_instance ? 0 : 2); early_acpi_os_unmap_memory(table, tbl_size); } else @@ -365,8 +348,7 @@ static int __init acpi_parse_apic_instance(char *str) acpi_apic_instance = simple_strtoul(str, NULL, 0); - printk(KERN_NOTICE PREFIX "Shall use APIC/MADT table %d\n", - acpi_apic_instance); + pr_notice("Shall use APIC/MADT table %d\n", acpi_apic_instance); return 0; } -- cgit v1.2.3 From 92858c476ec4e99cf0425f05dee109b6a55eb6f8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 26 Feb 2014 01:00:19 +0100 Subject: ACPI / PM: Resume runtime-suspended devices later during system suspend Runtime-suspended devices are resumed during system suspend by acpi_subsys_prepare() for two reasons: First, because they may need to be reprogrammed in order to change their wakeup settings and, second, because they may need to be operatonal for their children to be successfully suspended. That is a problem, though, if there are many runtime-suspended devices that need to be resumed this way during system suspend, because the .prepare() PM callbacks of devices are executed sequentially and the times taken by them accumulate, which may increase the total system suspend time quite a bit. For this reason, move the resume of runtime-suspended devices up to the next phase of device suspend (during system suspend), except for the ones that have power.ignore_children set. The exception is made, because the devices with power.ignore_children set may still be necessary for their children to be successfully suspended (during system suspend) and they won't be resumed automatically as a result of the runtime resume of their children. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/device_pm.c | 41 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index c14a00d3dca6..d047739f3380 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -901,14 +901,29 @@ EXPORT_SYMBOL_GPL(acpi_dev_resume_early); int acpi_subsys_prepare(struct device *dev) { /* - * Follow PCI and resume devices suspended at run time before running - * their system suspend callbacks. + * Devices having power.ignore_children set may still be necessary for + * suspending their children in the next phase of device suspend. */ - pm_runtime_resume(dev); + if (dev->power.ignore_children) + pm_runtime_resume(dev); + return pm_generic_prepare(dev); } EXPORT_SYMBOL_GPL(acpi_subsys_prepare); +/** + * acpi_subsys_suspend - Run the device driver's suspend callback. + * @dev: Device to handle. + * + * Follow PCI and resume devices suspended at run time before running their + * system suspend callbacks. + */ +int acpi_subsys_suspend(struct device *dev) +{ + pm_runtime_resume(dev); + return pm_generic_suspend(dev); +} + /** * acpi_subsys_suspend_late - Suspend device using ACPI. * @dev: Device to suspend. @@ -937,6 +952,23 @@ int acpi_subsys_resume_early(struct device *dev) return ret ? ret : pm_generic_resume_early(dev); } EXPORT_SYMBOL_GPL(acpi_subsys_resume_early); + +/** + * acpi_subsys_freeze - Run the device driver's freeze callback. + * @dev: Device to handle. + */ +int acpi_subsys_freeze(struct device *dev) +{ + /* + * This used to be done in acpi_subsys_prepare() for all devices and + * some drivers may depend on it, so do it here. Ideally, however, + * runtime-suspended devices should not be touched during freeze/thaw + * transitions. + */ + pm_runtime_resume(dev); + return pm_generic_freeze(dev); +} + #endif /* CONFIG_PM_SLEEP */ static struct dev_pm_domain acpi_general_pm_domain = { @@ -947,8 +979,11 @@ static struct dev_pm_domain acpi_general_pm_domain = { #endif #ifdef CONFIG_PM_SLEEP .prepare = acpi_subsys_prepare, + .suspend = acpi_subsys_suspend, .suspend_late = acpi_subsys_suspend_late, .resume_early = acpi_subsys_resume_early, + .freeze = acpi_subsys_freeze, + .poweroff = acpi_subsys_suspend, .poweroff_late = acpi_subsys_suspend_late, .restore_early = acpi_subsys_resume_early, #endif -- cgit v1.2.3 From 7cd0602d7836c0056fe9bdab014d5ac5ec5cb291 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 26 Feb 2014 01:00:30 +0100 Subject: PCI / PM: Resume runtime-suspended devices later during system suspend Runtime-suspended devices are resumed during system suspend by pci_pm_prepare() for two reasons: First, because they may need to be reprogrammed in order to change their wakeup settings and, second, because they may need to be operatonal for their children to be successfully suspended. That is a problem, though, if there are many runtime-suspended devices that need to be resumed this way during system suspend, because the .prepare() PM callbacks of devices are executed sequentially and the times taken by them accumulate, which may increase the total system suspend time quite a bit. For this reason, move the resume of runtime-suspended devices up to the next phase of device suspend (during system suspend), except for the ones that have power.ignore_children set. The exception is made, because the devices with power.ignore_children set may still be necessary for their children to be successfully suspended (during system suspend) and they won't be resumed automatically as a result of the runtime resume of their children. Signed-off-by: Rafael J. Wysocki Acked-by: Bjorn Helgaas --- drivers/pci/pci-driver.c | 33 +++++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 8 deletions(-) diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 25f0bc659164..d911e0c1f359 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -616,15 +616,11 @@ static int pci_pm_prepare(struct device *dev) int error = 0; /* - * PCI devices suspended at run time need to be resumed at this - * point, because in general it is necessary to reconfigure them for - * system suspend. Namely, if the device is supposed to wake up the - * system from the sleep state, we may need to reconfigure it for this - * purpose. In turn, if the device is not supposed to wake up the - * system from the sleep state, we'll have to prevent it from signaling - * wake-up. + * Devices having power.ignore_children set may still be necessary for + * suspending their children in the next phase of device suspend. */ - pm_runtime_resume(dev); + if (dev->power.ignore_children) + pm_runtime_resume(dev); if (drv && drv->pm && drv->pm->prepare) error = drv->pm->prepare(dev); @@ -654,6 +650,16 @@ static int pci_pm_suspend(struct device *dev) goto Fixup; } + /* + * PCI devices suspended at run time need to be resumed at this point, + * because in general it is necessary to reconfigure them for system + * suspend. Namely, if the device is supposed to wake up the system + * from the sleep state, we may need to reconfigure it for this purpose. + * In turn, if the device is not supposed to wake up the system from the + * sleep state, we'll have to prevent it from signaling wake-up. + */ + pm_runtime_resume(dev); + pci_dev->state_saved = false; if (pm->suspend) { pci_power_t prev = pci_dev->current_state; @@ -808,6 +814,14 @@ static int pci_pm_freeze(struct device *dev) return 0; } + /* + * This used to be done in pci_pm_prepare() for all devices and some + * drivers may depend on it, so do it here. Ideally, runtime-suspended + * devices should not be touched during freeze/thaw transitions, + * however. + */ + pm_runtime_resume(dev); + pci_dev->state_saved = false; if (pm->freeze) { int error; @@ -915,6 +929,9 @@ static int pci_pm_poweroff(struct device *dev) goto Fixup; } + /* The reason to do that is the same as in pci_pm_suspend(). */ + pm_runtime_resume(dev); + pci_dev->state_saved = false; if (pm->poweroff) { int error; -- cgit v1.2.3 From 1e3bcb596c6b1cf6db93f8f506e2de260e771bad Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 3 Mar 2014 00:40:38 +0100 Subject: ACPI / hotplug: Rework deferred execution of acpi_device_hotplug() Since the only function executed by acpi_hotplug_execute() is acpi_device_hotplug() and it only is called by the ACPI core, simplify its definition so that it only takes two arguments, the ACPI device object pointer and event code, rename it to acpi_hotplug_schedule() and move its header from acpi_bus.h to the ACPI core's internal header file internal.h. Modify the definition of acpi_device_hotplug() so that its first argument is an ACPI device object pointer and modify the definition of struct acpi_hp_work accordingly. Signed-off-by: Rafael J. Wysocki Acked-by: Toshi Kani --- drivers/acpi/bus.c | 2 +- drivers/acpi/internal.h | 3 ++- drivers/acpi/osl.c | 14 ++++++-------- drivers/acpi/scan.c | 6 ++---- include/acpi/acpi_bus.h | 4 ---- 5 files changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index e61e7b8a2eaf..afe6f9a919c1 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -400,7 +400,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: case ACPI_NOTIFY_EJECT_REQUEST: - status = acpi_hotplug_execute(acpi_device_hotplug, adev, type); + status = acpi_hotplug_schedule(adev, type); if (ACPI_SUCCESS(status)) return; default: diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4d081fc1aa24..957391306cbf 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -78,8 +78,9 @@ void acpi_lpss_init(void); static inline void acpi_lpss_init(void) {} #endif +acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); bool acpi_queue_hotplug_work(struct work_struct *work); -void acpi_device_hotplug(void *data, u32 src); +void acpi_device_hotplug(struct acpi_device *adev, u32 src); bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index fc1aa7909690..afb4be566940 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1168,8 +1168,7 @@ void acpi_os_wait_events_complete(void) struct acpi_hp_work { struct work_struct work; - acpi_hp_callback func; - void *data; + struct acpi_device *adev; u32 src; }; @@ -1178,25 +1177,24 @@ static void acpi_hotplug_work_fn(struct work_struct *work) struct acpi_hp_work *hpw = container_of(work, struct acpi_hp_work, work); acpi_os_wait_events_complete(); - hpw->func(hpw->data, hpw->src); + acpi_device_hotplug(hpw->adev, hpw->src); kfree(hpw); } -acpi_status acpi_hotplug_execute(acpi_hp_callback func, void *data, u32 src) +acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src) { struct acpi_hp_work *hpw; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Scheduling function [%p(%p, %u)] for deferred execution.\n", - func, data, src)); + "Scheduling hotplug event (%p, %u) for deferred execution.\n", + adev, src)); hpw = kmalloc(sizeof(*hpw), GFP_KERNEL); if (!hpw) return AE_NO_MEMORY; INIT_WORK(&hpw->work, acpi_hotplug_work_fn); - hpw->func = func; - hpw->data = data; + hpw->adev = adev; hpw->src = src; /* * We can't run hotplug code in kacpid_wq/kacpid_notify_wq etc., because diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index f6bcc24f73dc..eb7a1ff224e7 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -481,10 +481,9 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) return -EINVAL; } -void acpi_device_hotplug(void *data, u32 src) +void acpi_device_hotplug(struct acpi_device *adev, u32 src) { u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; - struct acpi_device *adev = data; int error = -ENODEV; lock_device_hotplug(); @@ -579,8 +578,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, return -ENODEV; get_device(&acpi_device->dev); - status = acpi_hotplug_execute(acpi_device_hotplug, acpi_device, - ACPI_OST_EC_OSPM_EJECT); + status = acpi_hotplug_schedule(acpi_device, ACPI_OST_EC_OSPM_EJECT); if (ACPI_SUCCESS(status)) return count; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index fb23a7b6c919..660f5056a37f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -455,10 +455,6 @@ static inline bool acpi_device_enumerated(struct acpi_device *adev) return adev && adev->flags.initialized && adev->flags.visited; } -typedef void (*acpi_hp_callback)(void *data, u32 src); - -acpi_status acpi_hotplug_execute(acpi_hp_callback func, void *data, u32 src); - /** * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver * @__acpi_driver: acpi_driver struct -- cgit v1.2.3 From b8a62d540240387c7e97a69127cab3ab9cadc70a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Mar 2014 00:48:57 +0100 Subject: ACPI / hotplug / PCI: Use pci_device_is_present() Make the ACPI-based PCI hotplug (ACPIPHP) code use pci_device_is_present() for checking if devices are present instead of open coding the same thing. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg --- drivers/pci/hotplug/acpiphp_glue.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f2f460cba5f7..2d51bf7e9fe0 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -689,12 +689,9 @@ static void trim_stale_devices(struct pci_dev *dev) alive = (ACPI_SUCCESS(status) && device_status_valid(sta)) || acpiphp_no_hotplug(adev); } - if (!alive) { - u32 v; + if (!alive) + alive = pci_device_is_present(dev); - /* Check if the device responds. */ - alive = pci_bus_read_dev_vendor_id(dev->bus, dev->devfn, &v, 0); - } if (!alive) { pci_stop_and_remove_bus_device(dev); if (adev) -- cgit v1.2.3 From a59ffb2062df3a5c346dbed931fa1e587fd0f0f3 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Tue, 4 Mar 2014 14:24:46 +0800 Subject: ACPI / thermal: make acpi_thermal_check asynchronous on resume On resume we do not need to wait for acpi_thermal_check to finish. Instead, we can run it asynchronously and not block the whole system resume. Also, we make sure when we are suspending again, previously queued work for acpi_thermal_check is done. Signed-off-by: Aaron Lu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/thermal.c | 37 +++++++++++++++++++++++++++++++++---- 1 file changed, 33 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 08626c851be7..964068553334 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #define PREFIX "ACPI: " @@ -90,6 +91,8 @@ static int psv; module_param(psv, int, 0644); MODULE_PARM_DESC(psv, "Disable or override all passive trip points."); +static struct workqueue_struct *acpi_thermal_pm_queue; + static int acpi_thermal_add(struct acpi_device *device); static int acpi_thermal_remove(struct acpi_device *device); static void acpi_thermal_notify(struct acpi_device *device, u32 event); @@ -101,11 +104,13 @@ static const struct acpi_device_id thermal_device_ids[] = { MODULE_DEVICE_TABLE(acpi, thermal_device_ids); #ifdef CONFIG_PM_SLEEP +static int acpi_thermal_suspend(struct device *dev); static int acpi_thermal_resume(struct device *dev); #else +#define acpi_thermal_suspend NULL #define acpi_thermal_resume NULL #endif -static SIMPLE_DEV_PM_OPS(acpi_thermal_pm, NULL, acpi_thermal_resume); +static SIMPLE_DEV_PM_OPS(acpi_thermal_pm, acpi_thermal_suspend, acpi_thermal_resume); static struct acpi_driver acpi_thermal_driver = { .name = "thermal", @@ -186,6 +191,7 @@ struct acpi_thermal { struct thermal_zone_device *thermal_zone; int tz_enabled; int kelvin_offset; + struct work_struct thermal_check_work; }; /* -------------------------------------------------------------------------- @@ -1064,6 +1070,13 @@ static void acpi_thermal_guess_offset(struct acpi_thermal *tz) tz->kelvin_offset = 2732; } +static void acpi_thermal_check_fn(struct work_struct *work) +{ + struct acpi_thermal *tz = container_of(work, struct acpi_thermal, + thermal_check_work); + acpi_thermal_check(tz); +} + static int acpi_thermal_add(struct acpi_device *device) { int result = 0; @@ -1093,6 +1106,8 @@ static int acpi_thermal_add(struct acpi_device *device) if (result) goto free_memory; + INIT_WORK(&tz->thermal_check_work, acpi_thermal_check_fn); + pr_info(PREFIX "%s [%s] (%ld C)\n", acpi_device_name(device), acpi_device_bid(device), KELVIN_TO_CELSIUS(tz->temperature)); goto end; @@ -1110,6 +1125,7 @@ static int acpi_thermal_remove(struct acpi_device *device) if (!device || !acpi_driver_data(device)) return -EINVAL; + flush_workqueue(acpi_thermal_pm_queue); tz = acpi_driver_data(device); acpi_thermal_unregister_thermal_zone(tz); @@ -1118,6 +1134,13 @@ static int acpi_thermal_remove(struct acpi_device *device) } #ifdef CONFIG_PM_SLEEP +static int acpi_thermal_suspend(struct device *dev) +{ + /* Make sure the previously queued thermal check work has been done */ + flush_workqueue(acpi_thermal_pm_queue); + return 0; +} + static int acpi_thermal_resume(struct device *dev) { struct acpi_thermal *tz; @@ -1148,7 +1171,7 @@ static int acpi_thermal_resume(struct device *dev) tz->state.active |= tz->trips.active[i].flags.enabled; } - acpi_thermal_check(tz); + queue_work(acpi_thermal_pm_queue, &tz->thermal_check_work); return AE_OK; } @@ -1240,16 +1263,22 @@ static int __init acpi_thermal_init(void) return -ENODEV; } + acpi_thermal_pm_queue = create_workqueue("acpi_thermal_pm"); + if (!acpi_thermal_pm_queue) + return -ENODEV; + result = acpi_bus_register_driver(&acpi_thermal_driver); - if (result < 0) + if (result < 0) { + destroy_workqueue(acpi_thermal_pm_queue); return -ENODEV; + } return 0; } static void __exit acpi_thermal_exit(void) { - + destroy_workqueue(acpi_thermal_pm_queue); acpi_bus_unregister_driver(&acpi_thermal_driver); return; -- cgit v1.2.3 From 5dc2f5a3030552f2501cb34ac6d979455630e486 Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:31 +0200 Subject: cpuidle: rename expected_us to next_timer_us in menu governor The field expected_us is used to store the time remaining until next timer expiry. The name is inaccurate, as we really do not expect all wakeups to be caused by timers. In addition, another field with a very similar name (predicted_us) is used to store the predicted time remaining until any wakeup source being active. This patch renames expected_us to next_timer_us in order to better reflect the contained information. Signed-off-by: Tuukka Tikkanen Acked-by: Nicolas Pitre Acked-by: Len Brown Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/governors/menu.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index cf7f2f0e4ef5..e9a2a27134c1 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -122,7 +122,7 @@ struct menu_device { int last_state_idx; int needs_update; - unsigned int expected_us; + unsigned int next_timer_us; unsigned int predicted_us; unsigned int exit_us; unsigned int bucket; @@ -257,7 +257,7 @@ again: stddev = int_sqrt(stddev); if (((avg > stddev * 6) && (divisor * 4 >= INTERVALS * 3)) || stddev <= 20) { - if (data->expected_us > avg) + if (data->next_timer_us > avg) data->predicted_us = avg; return; } @@ -306,11 +306,11 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) /* determine the expected residency time, round up */ t = ktime_to_timespec(tick_nohz_get_sleep_length()); - data->expected_us = + data->next_timer_us = t.tv_sec * USEC_PER_SEC + t.tv_nsec / NSEC_PER_USEC; - data->bucket = which_bucket(data->expected_us); + data->bucket = which_bucket(data->next_timer_us); multiplier = performance_multiplier(); @@ -326,7 +326,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) * operands are 32 bits. * Make sure to round up for half microseconds. */ - data->predicted_us = div_round64((uint64_t)data->expected_us * + data->predicted_us = div_round64((uint64_t)data->next_timer_us * data->correction_factor[data->bucket], RESOLUTION * DECAY); @@ -336,7 +336,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) * We want to default to C1 (hlt), not to busy polling * unless the timer is happening really really soon. */ - if (data->expected_us > 5 && + if (data->next_timer_us > 5 && !drv->states[CPUIDLE_DRIVER_STATE_START].disabled && dev->states_usage[CPUIDLE_DRIVER_STATE_START].disable == 0) data->last_state_idx = CPUIDLE_DRIVER_STATE_START; @@ -401,7 +401,7 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) * for the whole expected time. */ if (unlikely(!(target->flags & CPUIDLE_FLAG_TIME_VALID))) - last_idle_us = data->expected_us; + last_idle_us = data->next_timer_us; measured_us = last_idle_us; @@ -418,8 +418,8 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) new_factor = data->correction_factor[data->bucket]; new_factor -= new_factor / DECAY; - if (data->expected_us > 0 && measured_us < MAX_INTERESTING) - new_factor += RESOLUTION * measured_us / data->expected_us; + if (data->next_timer_us > 0 && measured_us < MAX_INTERESTING) + new_factor += RESOLUTION * measured_us / data->next_timer_us; else /* * we were idle so long that we count it as a perfect -- cgit v1.2.3 From 22695ab6314083d9d045ce9276e9ae79eb889531 Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:32 +0200 Subject: cpuidle: Use actual state latency in menu governor Currently menu governor records the exit latency of the state it has chosen for the idle period. The stored latency value is then later used to calculate the actual length of the idle period. This value may however be incorrect, as the entered state may not be the one chosen by the governor. The entered state information is available, so we can use that to obtain the real exit latency. Signed-off-by: Tuukka Tikkanen Acked-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/governors/menu.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index e9a2a27134c1..115386a46e9e 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -124,7 +124,6 @@ struct menu_device { unsigned int next_timer_us; unsigned int predicted_us; - unsigned int exit_us; unsigned int bucket; unsigned int correction_factor[BUCKETS]; unsigned int intervals[INTERVALS]; @@ -298,7 +297,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) } data->last_state_idx = 0; - data->exit_us = 0; /* Special case when user has set very strict latency requirement */ if (unlikely(latency_req == 0)) @@ -359,7 +357,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) continue; data->last_state_idx = i; - data->exit_us = s->exit_latency; } return data->last_state_idx; @@ -410,8 +407,8 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) * We correct for the exit latency; we are assuming here that the * exit latency happens after the event that we're interested in. */ - if (measured_us > data->exit_us) - measured_us -= data->exit_us; + if (measured_us > target->exit_latency) + measured_us -= target->exit_latency; /* Update our correction ratio */ -- cgit v1.2.3 From 7ac26436677024ab5e57e25c2c83d4c3fc232106 Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:33 +0200 Subject: cpuidle: Ensure menu coefficients stay within domain The menu governor uses coefficients as one method of actual idle period length estimation. The coefficients are, as detailed below, multipliers giving expected idle period length from time until next timer expiry. The multipliers are supposed to have domain of (0..1]. The coefficients are fractions where only the numerators are stored and denominators are a shared constant RESOLUTION*DECAY. Since the value of the coefficient should always be greater than 0 and less than or equal to 1, the numerator must have a value greater than 0 and less than or equal to RESOLUTION*DECAY. If the coefficients are updated with measured idle durations exceeding timer length, the multiplier may reach values exceeding unity (i.e. the stored numerator exceeds RESOLUTION*DECAY). This patch ensures that the multipliers are updated with durations capped to timer length. Signed-off-by: Tuukka Tikkanen Acked-by: Nicolas Pitre Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/governors/menu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 115386a46e9e..f0995dd2469f 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -410,6 +410,9 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) if (measured_us > target->exit_latency) measured_us -= target->exit_latency; + /* Make sure our coefficients do not exceed unity */ + if (measured_us > data->next_timer_us) + measured_us = data->next_timer_us; /* Update our correction ratio */ new_factor = data->correction_factor[data->bucket]; -- cgit v1.2.3 From 61c66d6efa23759f1061d80ced668977fd28337d Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:34 +0200 Subject: cpuidle: Do not substract exit latency from assumed sleep length The menu governor statistics update function tries to determine the amount of time between entry to low power state and the occurrence of the wakeup event. However, the time measured by the framework includes exit latency on top of the desired value. This exit latency is substracted from the measured value to obtain the desired value. When measured value is not available, the menu governor assumes the wakeup was caused by the timer and the time is equal to remaining timer length. No exit latency should be substracted from this value. This patch prevents the erroneous substraction and clarifies the associated comment. It also removes one intermediate variable that serves no purpose. Signed-off-by: Tuukka Tikkanen Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/governors/menu.c | 44 ++++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 18 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index f0995dd2469f..b347c101c1f7 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -387,32 +387,40 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) { struct menu_device *data = &__get_cpu_var(menu_devices); int last_idx = data->last_state_idx; - unsigned int last_idle_us = cpuidle_get_last_residency(dev); struct cpuidle_state *target = &drv->states[last_idx]; unsigned int measured_us; unsigned int new_factor; /* - * Ugh, this idle state doesn't support residency measurements, so we - * are basically lost in the dark. As a compromise, assume we slept - * for the whole expected time. + * Try to figure out how much time passed between entry to low + * power state and occurrence of the wakeup event. + * + * If the entered idle state didn't support residency measurements, + * we are basically lost in the dark how much time passed. + * As a compromise, assume we slept for the whole expected time. + * + * Any measured amount of time will include the exit latency. + * Since we are interested in when the wakeup begun, not when it + * was completed, we must substract the exit latency. However, if + * the measured amount of time is less than the exit latency, + * assume the state was never reached and the exit latency is 0. */ - if (unlikely(!(target->flags & CPUIDLE_FLAG_TIME_VALID))) - last_idle_us = data->next_timer_us; - + if (unlikely(!(target->flags & CPUIDLE_FLAG_TIME_VALID))) { + /* Use timer value as is */ + measured_us = data->next_timer_us; - measured_us = last_idle_us; + } else { + /* Use measured value */ + measured_us = cpuidle_get_last_residency(dev); - /* - * We correct for the exit latency; we are assuming here that the - * exit latency happens after the event that we're interested in. - */ - if (measured_us > target->exit_latency) - measured_us -= target->exit_latency; + /* Deduct exit latency */ + if (measured_us > target->exit_latency) + measured_us -= target->exit_latency; - /* Make sure our coefficients do not exceed unity */ - if (measured_us > data->next_timer_us) - measured_us = data->next_timer_us; + /* Make sure our coefficients do not exceed unity */ + if (measured_us > data->next_timer_us) + measured_us = data->next_timer_us; + } /* Update our correction ratio */ new_factor = data->correction_factor[data->bucket]; @@ -439,7 +447,7 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) data->correction_factor[data->bucket] = new_factor; /* update the repeating-pattern data */ - data->intervals[data->interval_ptr++] = last_idle_us; + data->intervals[data->interval_ptr++] = measured_us; if (data->interval_ptr >= INTERVALS) data->interval_ptr = 0; } -- cgit v1.2.3 From 96e95182e95fd4e0069ff4d6ee1888fe9031d154 Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:35 +0200 Subject: cpuidle: Move perf multiplier calculation out of the selection loop The menu governor performance multiplier defines a minimum predicted idle duration to latency ratio. Instead of checking this separately in every iteration of the state selection loop, adjust the overall latency restriction for the whole loop if this restriction is tighter than what is set by the QoS subsystem. The original test s->exit_latency * multiplier > data->predicted_us becomes s->exit_latency > data->predicted_us / multiplier by dividing both sides of the comparison by "multiplier". While division is likely to be several times slower than multiplication, the minor performance hit allows making a generic sleep state selection function based on (sleep duration, maximum latency) tuple. Signed-off-by: Tuukka Tikkanen Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/governors/menu.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index b347c101c1f7..71b523293354 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -288,7 +288,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) struct menu_device *data = &__get_cpu_var(menu_devices); int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY); int i; - int multiplier; + unsigned int interactivity_req; struct timespec t; if (data->needs_update) { @@ -310,8 +310,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) data->bucket = which_bucket(data->next_timer_us); - multiplier = performance_multiplier(); - /* * if the correction factor is 0 (eg first time init or cpu hotplug * etc), we actually want to start out with a unity factor. @@ -330,6 +328,15 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) get_typical_interval(data); + /* + * Performance multiplier defines a minimum predicted idle + * duration / latency ratio. Adjust the latency limit if + * necessary. + */ + interactivity_req = data->predicted_us / performance_multiplier(); + if (latency_req > interactivity_req) + latency_req = interactivity_req; + /* * We want to default to C1 (hlt), not to busy polling * unless the timer is happening really really soon. @@ -353,8 +360,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) continue; if (s->exit_latency > latency_req) continue; - if (s->exit_latency * multiplier > data->predicted_us) - continue; data->last_state_idx = i; } -- cgit v1.2.3 From 6e2c89d16d987e6e11c531b039a42d3f5f1d7c32 Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Tue, 4 Mar 2014 11:43:59 +0800 Subject: cpufreq: move call to __find_governor() to cpufreq_init_policy() We call __find_governor() during the addition of the first CPU of each policy from __cpufreq_add_dev() to find the last governor used for this CPU before it was hot-removed. After that we call cpufreq_parse_governor() in cpufreq_init_policy(), either with this governor, or with the default governor. Right after that policy->governor is set to NULL. While that code is not functionally problematic, the structure of it is suboptimal, because some of the code required in cpufreq_init_policy() is being executed by its caller, __cpufreq_add_dev(). So, it would make more sense to get all of it together in a single place to make code more readable. Accordingly, move the code needed for policy initialization to cpufreq_init_policy() and initialize policy->governor to NULL at the beginning. In order to clean up the code a bit more, some of the #ifdefs for CONFIG_HOTPLUG_CPU are dropped too. Signed-off-by: Viresh Kumar [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 38 ++++++++++++++------------------------ 1 file changed, 14 insertions(+), 24 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index df95c039a21c..2de2f1ddd95f 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -42,10 +42,8 @@ static DEFINE_RWLOCK(cpufreq_driver_lock); DEFINE_MUTEX(cpufreq_governor_lock); static LIST_HEAD(cpufreq_policy_list); -#ifdef CONFIG_HOTPLUG_CPU /* This one keeps track of the previously set governor of a removed CPU */ static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor); -#endif static inline bool has_target(void) { @@ -879,18 +877,25 @@ err_out_kobj_put: static void cpufreq_init_policy(struct cpufreq_policy *policy) { + struct cpufreq_governor *gov = NULL; struct cpufreq_policy new_policy; int ret = 0; memcpy(&new_policy, policy, sizeof(*policy)); + /* Update governor of new_policy to the governor used before hotplug */ + gov = __find_governor(per_cpu(cpufreq_cpu_governor, policy->cpu)); + if (gov) + pr_debug("Restoring governor %s for cpu %d\n", + policy->governor->name, policy->cpu); + else + gov = CPUFREQ_DEFAULT_GOVERNOR; + + new_policy.governor = gov; + /* Use the default policy if its valid. */ if (cpufreq_driver->setpolicy) - cpufreq_parse_governor(policy->governor->name, - &new_policy.policy, NULL); - - /* assure that the starting sequence is run in cpufreq_set_policy */ - policy->governor = NULL; + cpufreq_parse_governor(gov->name, &new_policy.policy, NULL); /* set default policy */ ret = cpufreq_set_policy(policy, &new_policy); @@ -949,6 +954,8 @@ static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu) read_unlock_irqrestore(&cpufreq_driver_lock, flags); + policy->governor = NULL; + return policy; } @@ -1036,7 +1043,6 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, unsigned long flags; #ifdef CONFIG_HOTPLUG_CPU struct cpufreq_policy *tpolicy; - struct cpufreq_governor *gov; #endif if (cpu_is_offline(cpu)) @@ -1094,7 +1100,6 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, else policy->cpu = cpu; - policy->governor = CPUFREQ_DEFAULT_GOVERNOR; cpumask_copy(policy->cpus, cpumask_of(cpu)); init_completion(&policy->kobj_unregister); @@ -1180,15 +1185,6 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_START, policy); -#ifdef CONFIG_HOTPLUG_CPU - gov = __find_governor(per_cpu(cpufreq_cpu_governor, cpu)); - if (gov) { - policy->governor = gov; - pr_debug("Restoring governor %s for cpu %d\n", - policy->governor->name, cpu); - } -#endif - if (!frozen) { ret = cpufreq_add_dev_interface(policy, dev); if (ret) @@ -1314,11 +1310,9 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, } } -#ifdef CONFIG_HOTPLUG_CPU if (!cpufreq_driver->setpolicy) strncpy(per_cpu(cpufreq_cpu_governor, cpu), policy->governor->name, CPUFREQ_NAME_LEN); -#endif down_read(&policy->rwsem); cpus = cpumask_weight(policy->cpus); @@ -1950,9 +1944,7 @@ EXPORT_SYMBOL_GPL(cpufreq_register_governor); void cpufreq_unregister_governor(struct cpufreq_governor *governor) { -#ifdef CONFIG_HOTPLUG_CPU int cpu; -#endif if (!governor) return; @@ -1960,14 +1952,12 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor) if (cpufreq_disabled()) return; -#ifdef CONFIG_HOTPLUG_CPU for_each_present_cpu(cpu) { if (cpu_online(cpu)) continue; if (!strcmp(per_cpu(cpufreq_cpu_governor, cpu), governor->name)) strcpy(per_cpu(cpufreq_cpu_governor, cpu), "\0"); } -#endif mutex_lock(&cpufreq_governor_mutex); list_del(&governor->governor_list); -- cgit v1.2.3 From 2f0aea9363609433b38ab13f0f86f38372668c68 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 4 Mar 2014 11:00:26 +0800 Subject: cpufreq: suspend governors on system suspend/hibernate This patch adds cpufreq suspend/resume calls to dpm_{suspend|resume}() for handling suspend/resume of cpufreq governors. Lan Tianyu (Intel) & Jinhyuk Choi (Broadcom) found an issue where the tunables configuration for clusters/sockets with non-boot CPUs was lost after system suspend/resume, as we were notifying governors with CPUFREQ_GOV_POLICY_EXIT on removal of the last CPU for that policy which caused the tunables memory to be freed. This is fixed by preventing any governor operations from being carried out between the device suspend and device resume stages of system suspend and resume, respectively. We could have added these callbacks at dpm_{suspend|resume}_noirq() level, but there is an additional problem that the majority of I/O devices is already suspended at that point and if cpufreq drivers want to change the frequency before suspending, then that not be possible on some platforms (which depend on peripherals like i2c, regulators, etc). Reported-and-tested-by: Lan Tianyu Reported-by: Jinhyuk Choi Signed-off-by: Viresh Kumar [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 5 +++ drivers/cpufreq/cpufreq.c | 111 +++++++++++++++++++++++----------------------- include/linux/cpufreq.h | 8 ++++ 3 files changed, 69 insertions(+), 55 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 1b41fca3d65a..c9fbb9d5484d 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include @@ -789,6 +790,8 @@ void dpm_resume(pm_message_t state) mutex_unlock(&dpm_list_mtx); async_synchronize_full(); dpm_show_time(starttime, state, NULL); + + cpufreq_resume(); } /** @@ -1259,6 +1262,8 @@ int dpm_suspend(pm_message_t state) might_sleep(); + cpufreq_suspend(); + mutex_lock(&dpm_list_mtx); pm_transition = state; async_error = 0; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2de2f1ddd95f..289a407a9207 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include #include @@ -45,6 +45,9 @@ static LIST_HEAD(cpufreq_policy_list); /* This one keeps track of the previously set governor of a removed CPU */ static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor); +/* Flag to suspend/resume CPUFreq governors */ +static bool cpufreq_suspended; + static inline bool has_target(void) { return cpufreq_driver->target_index || cpufreq_driver->target; @@ -1565,82 +1568,77 @@ static struct subsys_interface cpufreq_interface = { }; /** - * cpufreq_bp_suspend - Prepare the boot CPU for system suspend. + * cpufreq_suspend() - Suspend CPUFreq governors * - * This function is only executed for the boot processor. The other CPUs - * have been put offline by means of CPU hotplug. + * Called during system wide Suspend/Hibernate cycles for suspending governors + * as some platforms can't change frequency after this point in suspend cycle. + * Because some of the devices (like: i2c, regulators, etc) they use for + * changing frequency are suspended quickly after this point. */ -static int cpufreq_bp_suspend(void) +void cpufreq_suspend(void) { - int ret = 0; - - int cpu = smp_processor_id(); struct cpufreq_policy *policy; - pr_debug("suspending cpu %u\n", cpu); + if (!cpufreq_driver) + return; - /* If there's no policy for the boot CPU, we have nothing to do. */ - policy = cpufreq_cpu_get(cpu); - if (!policy) - return 0; + if (!has_target()) + return; - if (cpufreq_driver->suspend) { - ret = cpufreq_driver->suspend(policy); - if (ret) - printk(KERN_ERR "cpufreq: suspend failed in ->suspend " - "step on CPU %u\n", policy->cpu); + pr_debug("%s: Suspending Governors\n", __func__); + + list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { + if (__cpufreq_governor(policy, CPUFREQ_GOV_STOP)) + pr_err("%s: Failed to stop governor for policy: %p\n", + __func__, policy); + else if (cpufreq_driver->suspend + && cpufreq_driver->suspend(policy)) + pr_err("%s: Failed to suspend driver: %p\n", __func__, + policy); } - cpufreq_cpu_put(policy); - return ret; + cpufreq_suspended = true; } /** - * cpufreq_bp_resume - Restore proper frequency handling of the boot CPU. + * cpufreq_resume() - Resume CPUFreq governors * - * 1.) resume CPUfreq hardware support (cpufreq_driver->resume()) - * 2.) schedule call cpufreq_update_policy() ASAP as interrupts are - * restored. It will verify that the current freq is in sync with - * what we believe it to be. This is a bit later than when it - * should be, but nonethteless it's better than calling - * cpufreq_driver->get() here which might re-enable interrupts... - * - * This function is only executed for the boot CPU. The other CPUs have not - * been turned on yet. + * Called during system wide Suspend/Hibernate cycle for resuming governors that + * are suspended with cpufreq_suspend(). */ -static void cpufreq_bp_resume(void) +void cpufreq_resume(void) { - int ret = 0; - - int cpu = smp_processor_id(); struct cpufreq_policy *policy; - pr_debug("resuming cpu %u\n", cpu); + if (!cpufreq_driver) + return; - /* If there's no policy for the boot CPU, we have nothing to do. */ - policy = cpufreq_cpu_get(cpu); - if (!policy) + if (!has_target()) return; - if (cpufreq_driver->resume) { - ret = cpufreq_driver->resume(policy); - if (ret) { - printk(KERN_ERR "cpufreq: resume failed in ->resume " - "step on CPU %u\n", policy->cpu); - goto fail; - } - } + pr_debug("%s: Resuming Governors\n", __func__); - schedule_work(&policy->update); + cpufreq_suspended = false; -fail: - cpufreq_cpu_put(policy); -} + list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { + if (__cpufreq_governor(policy, CPUFREQ_GOV_START) + || __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS)) + pr_err("%s: Failed to start governor for policy: %p\n", + __func__, policy); + else if (cpufreq_driver->resume + && cpufreq_driver->resume(policy)) + pr_err("%s: Failed to resume driver: %p\n", __func__, + policy); -static struct syscore_ops cpufreq_syscore_ops = { - .suspend = cpufreq_bp_suspend, - .resume = cpufreq_bp_resume, -}; + /* + * schedule call cpufreq_update_policy() for boot CPU, i.e. last + * policy in list. It will verify that the current freq is in + * sync with what we believe it to be. + */ + if (list_is_last(&policy->policy_list, &cpufreq_policy_list)) + schedule_work(&policy->update); + } +} /** * cpufreq_get_current_driver - return current driver's name @@ -1857,6 +1855,10 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, struct cpufreq_governor *gov = NULL; #endif + /* Don't start any governor operations if we are entering suspend */ + if (cpufreq_suspended) + return 0; + if (policy->governor->max_transition_latency && policy->cpuinfo.transition_latency > policy->governor->max_transition_latency) { @@ -2392,7 +2394,6 @@ static int __init cpufreq_core_init(void) cpufreq_global_kobject = kobject_create(); BUG_ON(!cpufreq_global_kobject); - register_syscore_ops(&cpufreq_syscore_ops); return 0; } diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 4d89e0e6f9cc..94ed907c6999 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -296,6 +296,14 @@ cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy) policy->cpuinfo.max_freq); } +#ifdef CONFIG_CPU_FREQ +void cpufreq_suspend(void); +void cpufreq_resume(void); +#else +static inline void cpufreq_suspend(void) {} +static inline void cpufreq_resume(void) {} +#endif + /********************************************************************* * CPUFREQ NOTIFIER INTERFACE * *********************************************************************/ -- cgit v1.2.3 From e28867eab7c0a60cddf0cb59f9f6cbbd9561425d Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 4 Mar 2014 11:00:27 +0800 Subject: cpufreq: Implement cpufreq_generic_suspend() Multiple platforms need to set CPUs to a particular frequency before suspending the system, so provide a common infrastructure for them. Those platforms only need to point their ->suspend callback pointers to the generic routine. Tested-by: Stephen Warren Signed-off-by: Viresh Kumar [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 26 ++++++++++++++++++++++++++ include/linux/cpufreq.h | 3 +++ 2 files changed, 29 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 289a407a9207..61dd72b8c143 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1567,6 +1567,32 @@ static struct subsys_interface cpufreq_interface = { .remove_dev = cpufreq_remove_dev, }; +/* + * In case platform wants some specific frequency to be configured + * during suspend.. + */ +int cpufreq_generic_suspend(struct cpufreq_policy *policy) +{ + int ret; + + if (!policy->suspend_freq) { + pr_err("%s: suspend_freq can't be zero\n", __func__); + return -EINVAL; + } + + pr_debug("%s: Setting suspend-freq: %u\n", __func__, + policy->suspend_freq); + + ret = __cpufreq_driver_target(policy, policy->suspend_freq, + CPUFREQ_RELATION_H); + if (ret) + pr_err("%s: unable to set suspend-freq: %u. err: %d\n", + __func__, policy->suspend_freq, ret); + + return ret; +} +EXPORT_SYMBOL(cpufreq_generic_suspend); + /** * cpufreq_suspend() - Suspend CPUFreq governors * diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 94ed907c6999..325bab04271b 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -74,6 +74,8 @@ struct cpufreq_policy { unsigned int max; /* in kHz */ unsigned int cur; /* in kHz, only needed if cpufreq * governors are used */ + unsigned int suspend_freq; /* freq to set during suspend */ + unsigned int policy; /* see above */ struct cpufreq_governor *governor; /* see below */ void *governor_data; @@ -299,6 +301,7 @@ cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy) #ifdef CONFIG_CPU_FREQ void cpufreq_suspend(void); void cpufreq_resume(void); +int cpufreq_generic_suspend(struct cpufreq_policy *policy); #else static inline void cpufreq_suspend(void) {} static inline void cpufreq_resume(void) {} -- cgit v1.2.3 From d248bb89f94c193d5f88dbaeb32858d8d3c5762a Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 4 Mar 2014 11:00:28 +0800 Subject: cpufreq: exynos: Use cpufreq_generic_suspend() The cpufreq core now supports suspending and resuming of cpufreq drivers and governors during systems suspend and resume, so use the common infrastructure instead of defining special PM notifiers for the same thing. Signed-off-by: Viresh Kumar [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/exynos-cpufreq.c | 96 +++------------------------------------- 1 file changed, 7 insertions(+), 89 deletions(-) diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index fcd2914d081a..307f02e0e19c 100644 --- a/drivers/cpufreq/exynos-cpufreq.c +++ b/drivers/cpufreq/exynos-cpufreq.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #include @@ -24,12 +23,8 @@ #include "exynos-cpufreq.h" static struct exynos_dvfs_info *exynos_info; - static struct regulator *arm_regulator; - static unsigned int locking_frequency; -static bool frequency_locked; -static DEFINE_MUTEX(cpufreq_lock); static int exynos_cpufreq_get_index(unsigned int freq) { @@ -134,83 +129,13 @@ out: static int exynos_target(struct cpufreq_policy *policy, unsigned int index) { - struct cpufreq_frequency_table *freq_table = exynos_info->freq_table; - int ret = 0; - - mutex_lock(&cpufreq_lock); - - if (frequency_locked) - goto out; - - ret = exynos_cpufreq_scale(freq_table[index].frequency); - -out: - mutex_unlock(&cpufreq_lock); - - return ret; -} - -#ifdef CONFIG_PM -static int exynos_cpufreq_suspend(struct cpufreq_policy *policy) -{ - return 0; -} - -static int exynos_cpufreq_resume(struct cpufreq_policy *policy) -{ - return 0; -} -#endif - -/** - * exynos_cpufreq_pm_notifier - block CPUFREQ's activities in suspend-resume - * context - * @notifier - * @pm_event - * @v - * - * While frequency_locked == true, target() ignores every frequency but - * locking_frequency. The locking_frequency value is the initial frequency, - * which is set by the bootloader. In order to eliminate possible - * inconsistency in clock values, we save and restore frequencies during - * suspend and resume and block CPUFREQ activities. Note that the standard - * suspend/resume cannot be used as they are too deep (syscore_ops) for - * regulator actions. - */ -static int exynos_cpufreq_pm_notifier(struct notifier_block *notifier, - unsigned long pm_event, void *v) -{ - int ret; - - switch (pm_event) { - case PM_SUSPEND_PREPARE: - mutex_lock(&cpufreq_lock); - frequency_locked = true; - mutex_unlock(&cpufreq_lock); - - ret = exynos_cpufreq_scale(locking_frequency); - if (ret < 0) - return NOTIFY_BAD; - - break; - - case PM_POST_SUSPEND: - mutex_lock(&cpufreq_lock); - frequency_locked = false; - mutex_unlock(&cpufreq_lock); - break; - } - - return NOTIFY_OK; + return exynos_cpufreq_scale(exynos_info->freq_table[index].frequency); } -static struct notifier_block exynos_cpufreq_nb = { - .notifier_call = exynos_cpufreq_pm_notifier, -}; - static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy) { policy->clk = exynos_info->cpu_clk; + policy->suspend_freq = locking_frequency; return cpufreq_generic_init(policy, exynos_info->freq_table, 100000); } @@ -227,8 +152,7 @@ static struct cpufreq_driver exynos_driver = { .boost_supported = true, #endif #ifdef CONFIG_PM - .suspend = exynos_cpufreq_suspend, - .resume = exynos_cpufreq_resume, + .suspend = cpufreq_generic_suspend, #endif }; @@ -263,19 +187,13 @@ static int exynos_cpufreq_probe(struct platform_device *pdev) goto err_vdd_arm; } + /* Done here as we want to capture boot frequency */ locking_frequency = clk_get_rate(exynos_info->cpu_clk) / 1000; - register_pm_notifier(&exynos_cpufreq_nb); - - if (cpufreq_register_driver(&exynos_driver)) { - pr_err("%s: failed to register cpufreq driver\n", __func__); - goto err_cpufreq; - } - - return 0; -err_cpufreq: - unregister_pm_notifier(&exynos_cpufreq_nb); + if (!cpufreq_register_driver(&exynos_driver)) + return 0; + pr_err("%s: failed to register cpufreq driver\n", __func__); regulator_put(arm_regulator); err_vdd_arm: kfree(exynos_info); -- cgit v1.2.3 From 59625ba393881f224b4af9ab1c8ed494c643fb87 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 4 Mar 2014 11:00:29 +0800 Subject: cpufreq: s5pv210: Use cpufreq_generic_suspend() The cpufreq core now supports suspending and resuming of cpufreq drivers and governors during systems suspend and resume, so use the common infrastructure instead of defining special PM notifiers for the same thing. Signed-off-by: Viresh Kumar [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/s5pv210-cpufreq.c | 49 +++------------------------------------ 1 file changed, 3 insertions(+), 46 deletions(-) diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c index 55a8e9fa9435..72421534fff5 100644 --- a/drivers/cpufreq/s5pv210-cpufreq.c +++ b/drivers/cpufreq/s5pv210-cpufreq.c @@ -18,7 +18,6 @@ #include #include #include -#include #include #include @@ -435,18 +434,6 @@ exit: return ret; } -#ifdef CONFIG_PM -static int s5pv210_cpufreq_suspend(struct cpufreq_policy *policy) -{ - return 0; -} - -static int s5pv210_cpufreq_resume(struct cpufreq_policy *policy) -{ - return 0; -} -#endif - static int check_mem_type(void __iomem *dmc_reg) { unsigned long val; @@ -502,6 +489,7 @@ static int __init s5pv210_cpu_init(struct cpufreq_policy *policy) s5pv210_dram_conf[1].refresh = (__raw_readl(S5P_VA_DMC1 + 0x30) * 1000); s5pv210_dram_conf[1].freq = clk_get_rate(dmc1_clk); + policy->suspend_freq = SLEEP_FREQ; return cpufreq_generic_init(policy, s5pv210_freq_table, 40000); out_dmc1: @@ -511,32 +499,6 @@ out_dmc0: return ret; } -static int s5pv210_cpufreq_notifier_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - int ret; - - switch (event) { - case PM_SUSPEND_PREPARE: - ret = cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ, 0); - if (ret < 0) - return NOTIFY_BAD; - - /* Disable updation of cpu frequency */ - no_cpufreq_access = true; - return NOTIFY_OK; - case PM_POST_RESTORE: - case PM_POST_SUSPEND: - /* Enable updation of cpu frequency */ - no_cpufreq_access = false; - cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ, 0); - - return NOTIFY_OK; - } - - return NOTIFY_DONE; -} - static int s5pv210_cpufreq_reboot_notifier_event(struct notifier_block *this, unsigned long event, void *ptr) { @@ -558,15 +520,11 @@ static struct cpufreq_driver s5pv210_driver = { .init = s5pv210_cpu_init, .name = "s5pv210", #ifdef CONFIG_PM - .suspend = s5pv210_cpufreq_suspend, - .resume = s5pv210_cpufreq_resume, + .suspend = cpufreq_generic_suspend, + .resume = cpufreq_generic_suspend, /* We need to set SLEEP FREQ again */ #endif }; -static struct notifier_block s5pv210_cpufreq_notifier = { - .notifier_call = s5pv210_cpufreq_notifier_event, -}; - static struct notifier_block s5pv210_cpufreq_reboot_notifier = { .notifier_call = s5pv210_cpufreq_reboot_notifier_event, }; @@ -586,7 +544,6 @@ static int __init s5pv210_cpufreq_init(void) return PTR_ERR(int_regulator); } - register_pm_notifier(&s5pv210_cpufreq_notifier); register_reboot_notifier(&s5pv210_cpufreq_reboot_notifier); return cpufreq_register_driver(&s5pv210_driver); -- cgit v1.2.3 From d351cb31146833b67b6db7e46dcd6cb766d584ae Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 4 Mar 2014 11:00:30 +0800 Subject: cpufreq: Tegra: Use cpufreq_generic_suspend() The cpufreq core now supports suspending and resuming of cpufreq drivers and governors during systems suspend and resume, so use the common infrastructure instead of defining special PM notifiers for the same thing. Signed-off-by: Viresh Kumar Tested-by: Stephen Warren [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/tegra-cpufreq.c | 46 +++++------------------------------------ 1 file changed, 5 insertions(+), 41 deletions(-) diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index e652c1bd8d0f..bcfed7761029 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -26,7 +26,6 @@ #include #include #include -#include static struct cpufreq_frequency_table freq_table[] = { { .frequency = 216000 }, @@ -47,9 +46,6 @@ static struct clk *pll_x_clk; static struct clk *pll_p_clk; static struct clk *emc_clk; -static DEFINE_MUTEX(tegra_cpu_lock); -static bool is_suspended; - static int tegra_cpu_clk_set_rate(unsigned long rate) { int ret; @@ -112,42 +108,9 @@ static int tegra_update_cpu_speed(struct cpufreq_policy *policy, static int tegra_target(struct cpufreq_policy *policy, unsigned int index) { - int ret = -EBUSY; - - mutex_lock(&tegra_cpu_lock); - - if (!is_suspended) - ret = tegra_update_cpu_speed(policy, - freq_table[index].frequency); - - mutex_unlock(&tegra_cpu_lock); - return ret; + return tegra_update_cpu_speed(policy, freq_table[index].frequency); } -static int tegra_pm_notify(struct notifier_block *nb, unsigned long event, - void *dummy) -{ - mutex_lock(&tegra_cpu_lock); - if (event == PM_SUSPEND_PREPARE) { - struct cpufreq_policy *policy = cpufreq_cpu_get(0); - is_suspended = true; - pr_info("Tegra cpufreq suspend: setting frequency to %d kHz\n", - freq_table[0].frequency); - if (clk_get_rate(cpu_clk) / 1000 != freq_table[0].frequency) - tegra_update_cpu_speed(policy, freq_table[0].frequency); - cpufreq_cpu_put(policy); - } else if (event == PM_POST_SUSPEND) { - is_suspended = false; - } - mutex_unlock(&tegra_cpu_lock); - - return NOTIFY_OK; -} - -static struct notifier_block tegra_cpu_pm_notifier = { - .notifier_call = tegra_pm_notify, -}; - static int tegra_cpu_init(struct cpufreq_policy *policy) { int ret; @@ -166,10 +129,8 @@ static int tegra_cpu_init(struct cpufreq_policy *policy) return ret; } - if (policy->cpu == 0) - register_pm_notifier(&tegra_cpu_pm_notifier); - policy->clk = cpu_clk; + policy->suspend_freq = freq_table[0].frequency; return 0; } @@ -190,6 +151,9 @@ static struct cpufreq_driver tegra_cpufreq_driver = { .exit = tegra_cpu_exit, .name = "tegra", .attr = cpufreq_generic_attr, +#ifdef CONFIG_PM + .suspend = cpufreq_generic_suspend, +#endif }; static int __init tegra_cpufreq_init(void) -- cgit v1.2.3 From 4b2f0b033a294e6c19d57c5d0a66c000f6299559 Mon Sep 17 00:00:00 2001 From: "tuukka.tikkanen@linaro.org" Date: Mon, 24 Feb 2014 08:29:37 +0200 Subject: cpuidle: poll state can measure residency For some platforms, a poll state is inserted in the cpuidle driver states. The flags for the state do not indicate that timekeeping is not affected. As the state does not do anything apart from calling cpu_relax(), the times returned by ktime_get should remain valid. Add the missing flag. Signed-off-by: Tuukka Tikkanen Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index 06dbe7c86199..136d6a283e0a 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -209,7 +209,7 @@ static void poll_idle_init(struct cpuidle_driver *drv) state->exit_latency = 0; state->target_residency = 0; state->power_usage = -1; - state->flags = 0; + state->flags = CPUIDLE_FLAG_TIME_VALID; state->enter = poll_idle; state->disabled = false; } -- cgit v1.2.3 From 7500d9363f7e356a5a3f10f1778f2e4f8a7eba94 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 10 Mar 2014 19:31:51 +0530 Subject: PM / suspend: Remove unnecessary !! Double ! or !! are normally required to get 0 or 1 out of a expression. A comparision always returns 0 or 1 and hence there is no need to apply double ! over it again. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- kernel/power/suspend.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 62ee437b5c7e..90b3d9366d1a 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -39,7 +39,7 @@ static const struct platform_suspend_ops *suspend_ops; static bool need_suspend_ops(suspend_state_t state) { - return !!(state > PM_SUSPEND_FREEZE); + return state > PM_SUSPEND_FREEZE; } static DECLARE_WAIT_QUEUE_HEAD(suspend_freeze_wait_head); -- cgit v1.2.3 From 0b89e9aa28566cd3e96651dbdd769b026a476d49 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Thu, 6 Mar 2014 11:02:01 +0000 Subject: cpuidle: delay enabling interrupts until all coupled CPUs leave idle As described by a comment at the end of cpuidle_enter_state_coupled it can be inefficient for coupled idle states to return with IRQs enabled since they may proceed to service an interrupt instead of clearing the coupled idle state. Until they have finished & cleared the idle state all CPUs coupled with them will spin rather than being able to enter a safe idle state. Commits e1689795a784 "cpuidle: Add common time keeping and irq enabling" and 554c06ba3ee2 "cpuidle: remove en_core_tk_irqen flag" led to the cpuidle_enter_state enabling interrupts for all idle states, including coupled ones, making this inefficiency unavoidable by drivers & the local_irq_enable near the end of cpuidle_enter_state_coupled redundant. This patch avoids enabling interrupts in cpuidle_enter_state after a coupled state has been entered, allowing them to remain disabled until all coupled CPUs have exited the idle state and cpuidle_enter_state_coupled re-enables them. Cc: Daniel Lezcano Signed-off-by: Paul Burton Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/cpuidle.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index a55e68f2cfc8..366e6840ec46 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -85,7 +85,8 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, time_end = ktime_get(); - local_irq_enable(); + if (!cpuidle_state_is_coupled(dev, drv, entered_state)) + local_irq_enable(); diff = ktime_to_us(ktime_sub(time_end, time_start)); if (diff > INT_MAX) -- cgit v1.2.3 From e837f9b58b83a705c9c14b26c3ee29fd9870322e Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 11 Mar 2014 10:03:00 -0700 Subject: cpufreq: Reformat printk() statements MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - Add missing newlines - Coalesce format fragments - Convert printks to pr_ - Align arguments Based-on-patch-by: Sören Brinkmann Signed-off-by: Joe Perches Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 75 ++++++++++++++++++++++------------------------- 1 file changed, 35 insertions(+), 40 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 61dd72b8c143..746f70875078 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -182,8 +182,8 @@ unsigned int cpufreq_generic_get(unsigned int cpu) struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); if (!policy || IS_ERR(policy->clk)) { - pr_err("%s: No %s associated to cpu: %d\n", __func__, - policy ? "clk" : "policy", cpu); + pr_err("%s: No %s associated to cpu: %d\n", + __func__, policy ? "clk" : "policy", cpu); return 0; } @@ -255,15 +255,15 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) if (!l_p_j_ref_freq) { l_p_j_ref = loops_per_jiffy; l_p_j_ref_freq = ci->old; - pr_debug("saving %lu as reference value for loops_per_jiffy; " - "freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq); + pr_debug("saving %lu as reference value for loops_per_jiffy; freq is %u kHz\n", + l_p_j_ref, l_p_j_ref_freq); } if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) || (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) { loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq, ci->new); - pr_debug("scaling loops_per_jiffy to %lu " - "for frequency %u kHz\n", loops_per_jiffy, ci->new); + pr_debug("scaling loops_per_jiffy to %lu for frequency %u kHz\n", + loops_per_jiffy, ci->new); } } #else @@ -283,7 +283,7 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy, freqs->flags = cpufreq_driver->flags; pr_debug("notification %u of frequency transition to %u kHz\n", - state, freqs->new); + state, freqs->new); switch (state) { @@ -295,9 +295,8 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy, if (!(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) { if ((policy) && (policy->cpu == freqs->cpu) && (policy->cur) && (policy->cur != freqs->old)) { - pr_debug("Warning: CPU frequency is" - " %u, cpufreq assumed %u kHz.\n", - freqs->old, policy->cur); + pr_debug("Warning: CPU frequency is %u, cpufreq assumed %u kHz\n", + freqs->old, policy->cur); freqs->old = policy->cur; } } @@ -308,8 +307,8 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy, case CPUFREQ_POSTCHANGE: adjust_jiffies(CPUFREQ_POSTCHANGE, freqs); - pr_debug("FREQ: %lu - CPU: %lu", (unsigned long)freqs->new, - (unsigned long)freqs->cpu); + pr_debug("FREQ: %lu - CPU: %lu\n", + (unsigned long)freqs->new, (unsigned long)freqs->cpu); trace_cpu_frequency(freqs->new, freqs->cpu); srcu_notifier_call_chain(&cpufreq_transition_notifier_list, CPUFREQ_POSTCHANGE, freqs); @@ -369,13 +368,13 @@ static ssize_t store_boost(struct kobject *kobj, struct attribute *attr, return -EINVAL; if (cpufreq_boost_trigger_state(enable)) { - pr_err("%s: Cannot %s BOOST!\n", __func__, - enable ? "enable" : "disable"); + pr_err("%s: Cannot %s BOOST!\n", + __func__, enable ? "enable" : "disable"); return -EINVAL; } - pr_debug("%s: cpufreq BOOST %s\n", __func__, - enable ? "enabled" : "disabled"); + pr_debug("%s: cpufreq BOOST %s\n", + __func__, enable ? "enabled" : "disabled"); return count; } @@ -1264,7 +1263,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, sysfs_remove_link(&cpu_dev->kobj, "cpufreq"); ret = kobject_move(&policy->kobj, &cpu_dev->kobj); if (ret) { - pr_err("%s: Failed to move kobj: %d", __func__, ret); + pr_err("%s: Failed to move kobj: %d\n", __func__, ret); down_write(&policy->rwsem); cpumask_set_cpu(old_cpu, policy->cpus); @@ -1330,7 +1329,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, if (!frozen) { pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n", - __func__, new_cpu, cpu); + __func__, new_cpu, cpu); } } } @@ -1370,7 +1369,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, CPUFREQ_GOV_POLICY_EXIT); if (ret) { pr_err("%s: Failed to exit governor\n", - __func__); + __func__); return ret; } } @@ -1398,7 +1397,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) || (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) { pr_err("%s: Failed to start governor\n", - __func__); + __func__); return ret; } } @@ -1455,8 +1454,8 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, struct cpufreq_freqs freqs; unsigned long flags; - pr_debug("Warning: CPU frequency out of sync: cpufreq and timing " - "core thinks of %u, is %u kHz.\n", old_freq, new_freq); + pr_debug("Warning: CPU frequency out of sync: cpufreq and timing core thinks of %u, is %u kHz\n", + old_freq, new_freq); freqs.old = old_freq; freqs.new = new_freq; @@ -1780,7 +1779,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, target_freq = policy->min; pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n", - policy->cpu, target_freq, relation, old_target_freq); + policy->cpu, target_freq, relation, old_target_freq); /* * This might look like a redundant call as we are checking it again @@ -1825,8 +1824,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, freqs.flags = 0; pr_debug("%s: cpu: %d, oldfreq: %u, new freq: %u\n", - __func__, policy->cpu, freqs.old, - freqs.new); + __func__, policy->cpu, freqs.old, freqs.new); cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); @@ -1835,7 +1833,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, retval = cpufreq_driver->target_index(policy, index); if (retval) pr_err("%s: Failed to change cpu frequency: %d\n", - __func__, retval); + __func__, retval); if (notify) cpufreq_notify_post_transition(policy, &freqs, retval); @@ -1891,11 +1889,8 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, if (!gov) return -EINVAL; else { - printk(KERN_WARNING "%s governor failed, too long" - " transition latency of HW, fallback" - " to %s governor\n", - policy->governor->name, - gov->name); + pr_warn("%s governor failed, too long transition latency of HW, fallback to %s governor\n", + policy->governor->name, gov->name); policy->governor = gov; } } @@ -1905,7 +1900,7 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, return -EINVAL; pr_debug("__cpufreq_governor for CPU %u, event %u\n", - policy->cpu, event); + policy->cpu, event); mutex_lock(&cpufreq_governor_lock); if ((policy->governor_enabled && event == CPUFREQ_GOV_START) @@ -2033,8 +2028,8 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, struct cpufreq_governor *old_gov; int ret; - pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu, - new_policy->min, new_policy->max); + pr_debug("setting new policy for CPU %u: %u - %u kHz\n", + new_policy->cpu, new_policy->min, new_policy->max); memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo)); @@ -2070,7 +2065,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, policy->max = new_policy->max; pr_debug("new min and max freqs are %u - %u kHz\n", - policy->min, policy->max); + policy->min, policy->max); if (cpufreq_driver->setpolicy) { policy->policy = new_policy->policy; @@ -2158,7 +2153,7 @@ int cpufreq_update_policy(unsigned int cpu) } if (!policy->cur) { - pr_debug("Driver did not initialize current freq"); + pr_debug("Driver did not initialize current freq\n"); policy->cur = new_policy.cur; } else { if (policy->cur != new_policy.cur && has_target()) @@ -2260,8 +2255,8 @@ int cpufreq_boost_trigger_state(int state) cpufreq_driver->boost_enabled = !state; write_unlock_irqrestore(&cpufreq_driver_lock, flags); - pr_err("%s: Cannot %s BOOST\n", __func__, - state ? "enable" : "disable"); + pr_err("%s: Cannot %s BOOST\n", + __func__, state ? "enable" : "disable"); } return ret; @@ -2333,7 +2328,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) ret = cpufreq_sysfs_create_file(&boost.attr); if (ret) { pr_err("%s: cannot register global BOOST sysfs file\n", - __func__); + __func__); goto err_null_driver; } } @@ -2356,7 +2351,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) /* if all ->init() calls failed, unregister */ if (ret) { pr_debug("no CPU initialized for driver %s\n", - driver_data->name); + driver_data->name); goto err_if_unreg; } } -- cgit v1.2.3 From 7b60894ff8c5c67ff1caaf89173c3aa5cf57311e Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 11 Mar 2014 11:23:40 +0100 Subject: PM / Runtime: Add missing "it" in comment Signed-off-by: Geert Uytterhoeven Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- drivers/base/power/runtime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 72e00e66ecc5..19224883ca8b 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1130,7 +1130,7 @@ EXPORT_SYMBOL_GPL(pm_runtime_barrier); * @dev: Device to handle. * @check_resume: If set, check if there's a resume request for the device. * - * Increment power.disable_depth for the device and if was zero previously, + * Increment power.disable_depth for the device and if it was zero previously, * cancel all pending runtime PM requests for the device and wait for all * operations in progress to complete. The device can be either active or * suspended after its runtime PM has been disabled. -- cgit v1.2.3 From 4d4348202b34c130a899b597fec14bbb5d83108d Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 11 Mar 2014 11:23:41 +0100 Subject: PM / Hibernate: Spelling s/anonymouns/anonymous/ Spelling fix. Signed-off-by: Geert Uytterhoeven Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- kernel/power/snapshot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index d9f61a145802..149e745eaa52 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1268,7 +1268,7 @@ static void free_unnecessary_pages(void) * [number of saveable pages] - [number of pages that can be freed in theory] * * where the second term is the sum of (1) reclaimable slab pages, (2) active - * and (3) inactive anonymouns pages, (4) active and (5) inactive file pages, + * and (3) inactive anonymous pages, (4) active and (5) inactive file pages, * minus mapped file pages. */ static unsigned long minimum_image_size(unsigned long saveable) -- cgit v1.2.3 From af02b5fdb1fb3c5d5f8d71f7f84e4fb243e1ae31 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 11 Mar 2014 12:08:11 +0100 Subject: PM: Add missing "freeze" state Fix descriptions of /sys/power/state in the documentation and in a code comment. Signed-off-by: Geert Uytterhoeven Reviewed-by: Srivatsa S. Bhat Acked-by: Pavel Machek [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- Documentation/ABI/testing/sysfs-power | 5 +++-- kernel/power/main.c | 4 ++-- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 205a73878441..64c9276e9421 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -12,8 +12,9 @@ Contact: Rafael J. Wysocki Description: The /sys/power/state file controls the system power state. Reading from this file returns what states are supported, - which is hard-coded to 'standby' (Power-On Suspend), 'mem' - (Suspend-to-RAM), and 'disk' (Suspend-to-Disk). + which is hard-coded to 'freeze' (Low-Power Idle), 'standby' + (Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk' + (Suspend-to-Disk). Writing to this file one of these strings causes the system to transition into that state. Please see the file diff --git a/kernel/power/main.c b/kernel/power/main.c index 1d1bf630e6e9..6271bc4073ef 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -282,8 +282,8 @@ struct kobject *power_kobj; * state - control system power state. * * show() returns what states are supported, which is hard-coded to - * 'standby' (Power-On Suspend), 'mem' (Suspend-to-RAM), and - * 'disk' (Suspend-to-Disk). + * 'freeze' (Low-Power Idle), 'standby' (Power-On Suspend), + * 'mem' (Suspend-to-RAM), and 'disk' (Suspend-to-Disk). * * store() accepts one of those strings, translates it into the * proper enumerated value, and initiates a suspend transition. -- cgit v1.2.3 From e0b3165ba521c6824b3e9f563f38a701dfa2d8e6 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 10 Mar 2014 14:53:33 +0530 Subject: cpufreq: add 'freq_table' in struct cpufreq_policy freq table is not per CPU but per policy, so it makes more sense to keep it within struct cpufreq_policy instead of a per-cpu variable. This patch does it. Over that, there is no need to set policy->freq_table to NULL in ->exit(), as policy structure is going to be freed soon. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/acpi-cpufreq.c | 1 - drivers/cpufreq/arm_big_little.c | 1 - drivers/cpufreq/cpufreq.c | 7 +++++- drivers/cpufreq/e_powersaver.c | 1 - drivers/cpufreq/freq_table.c | 46 ++++++----------------------------- drivers/cpufreq/ia64-acpi-cpufreq.c | 1 - drivers/cpufreq/loongson2_cpufreq.c | 1 - drivers/cpufreq/omap-cpufreq.c | 1 - drivers/cpufreq/pasemi-cpufreq.c | 1 - drivers/cpufreq/powernow-k6.c | 1 - drivers/cpufreq/powernow-k7.c | 2 -- drivers/cpufreq/powernow-k8.c | 2 -- drivers/cpufreq/ppc-corenet-cpufreq.c | 1 - drivers/cpufreq/sh-cpufreq.c | 1 - drivers/cpufreq/sparc-us2e-cpufreq.c | 4 +-- drivers/cpufreq/sparc-us3-cpufreq.c | 4 +-- drivers/cpufreq/speedstep-centrino.c | 2 -- drivers/cpufreq/tegra-cpufreq.c | 1 - include/linux/cpufreq.h | 6 +---- 19 files changed, 17 insertions(+), 67 deletions(-) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 18448a7e9f86..822ca03a87f7 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -855,7 +855,6 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy) pr_debug("acpi_cpufreq_cpu_exit\n"); if (data) { - cpufreq_frequency_table_put_attr(policy->cpu); per_cpu(acfreq_data, policy->cpu) = NULL; acpi_processor_unregister_performance(data->acpi_data, policy->cpu); diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 72f87e9317e3..3d8707848035 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -478,7 +478,6 @@ static int bL_cpufreq_exit(struct cpufreq_policy *policy) return -ENODEV; } - cpufreq_frequency_table_put_attr(policy->cpu); put_cluster_clk_and_freq_table(cpu_dev); dev_dbg(cpu_dev, "%s: Exited, cpu: %d\n", __func__, policy->cpu); diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 746f70875078..dddbefb857c9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -191,6 +191,12 @@ unsigned int cpufreq_generic_get(unsigned int cpu) } EXPORT_SYMBOL_GPL(cpufreq_generic_get); +/* Only for cpufreq core internal use */ +struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu) +{ + return per_cpu(cpufreq_cpu_data, cpu); +} + struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) { struct cpufreq_policy *policy = NULL; @@ -1031,7 +1037,6 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) up_write(&policy->rwsem); - cpufreq_frequency_table_update_policy_cpu(policy); blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_UPDATE_POLICY_CPU, policy); } diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 9012b8bb6b64..a0d2a423cea9 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -382,7 +382,6 @@ static int eps_cpu_exit(struct cpufreq_policy *policy) unsigned int cpu = policy->cpu; /* Bye */ - cpufreq_frequency_table_put_attr(policy->cpu); kfree(eps_cpu[cpu]); eps_cpu[cpu] = NULL; return 0; diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index 8e54f97899ba..65a477075b3f 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -91,8 +91,8 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify); /* - * Generic routine to verify policy & frequency table, requires driver to call - * cpufreq_frequency_table_get_attr() prior to it. + * Generic routine to verify policy & frequency table, requires driver to set + * policy->freq_table prior to it. */ int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy) { @@ -203,8 +203,6 @@ int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy, } EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_index); -static DEFINE_PER_CPU(struct cpufreq_frequency_table *, cpufreq_show_table); - /** * show_available_freqs - show available frequencies for the specified CPU */ @@ -212,15 +210,12 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf, bool show_boost) { unsigned int i = 0; - unsigned int cpu = policy->cpu; ssize_t count = 0; - struct cpufreq_frequency_table *table; + struct cpufreq_frequency_table *table = policy->freq_table; - if (!per_cpu(cpufreq_show_table, cpu)) + if (!table) return -ENODEV; - table = per_cpu(cpufreq_show_table, cpu); - for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { if (table[i].frequency == CPUFREQ_ENTRY_INVALID) continue; @@ -283,49 +278,24 @@ struct freq_attr *cpufreq_generic_attr[] = { }; EXPORT_SYMBOL_GPL(cpufreq_generic_attr); -/* - * if you use these, you must assure that the frequency table is valid - * all the time between get_attr and put_attr! - */ -void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, - unsigned int cpu) -{ - pr_debug("setting show_table for cpu %u to %p\n", cpu, table); - per_cpu(cpufreq_show_table, cpu) = table; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr); - -void cpufreq_frequency_table_put_attr(unsigned int cpu) -{ - pr_debug("clearing show_table for cpu %u\n", cpu); - per_cpu(cpufreq_show_table, cpu) = NULL; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr); - int cpufreq_table_validate_and_show(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table) { int ret = cpufreq_frequency_table_cpuinfo(policy, table); if (!ret) - cpufreq_frequency_table_get_attr(table, policy->cpu); + policy->freq_table = table; return ret; } EXPORT_SYMBOL_GPL(cpufreq_table_validate_and_show); -void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy) -{ - pr_debug("Updating show_table for new_cpu %u from last_cpu %u\n", - policy->cpu, policy->last_cpu); - per_cpu(cpufreq_show_table, policy->cpu) = per_cpu(cpufreq_show_table, - policy->last_cpu); - per_cpu(cpufreq_show_table, policy->last_cpu) = NULL; -} +struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu); struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu) { - return per_cpu(cpufreq_show_table, cpu); + struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu); + return policy ? policy->freq_table : NULL; } EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table); diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c index 53c6ac637e10..a22b5d182e0e 100644 --- a/drivers/cpufreq/ia64-acpi-cpufreq.c +++ b/drivers/cpufreq/ia64-acpi-cpufreq.c @@ -332,7 +332,6 @@ acpi_cpufreq_cpu_exit ( pr_debug("acpi_cpufreq_cpu_exit\n"); if (data) { - cpufreq_frequency_table_put_attr(policy->cpu); acpi_io_data[policy->cpu] = NULL; acpi_processor_unregister_performance(&data->acpi_data, policy->cpu); diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c index b6581abc9207..a3588d61d933 100644 --- a/drivers/cpufreq/loongson2_cpufreq.c +++ b/drivers/cpufreq/loongson2_cpufreq.c @@ -104,7 +104,6 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy) static int loongson2_cpufreq_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); clk_put(policy->clk); return 0; } diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index 590f5b66d181..5f69c9aa703c 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -143,7 +143,6 @@ fail: static int omap_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); freq_table_free(); clk_put(policy->clk); return 0; diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index 0426008380d8..6a2b7d3e85a7 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -234,7 +234,6 @@ static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy) if (sdcpwr_mapbase) iounmap(sdcpwr_mapbase); - cpufreq_frequency_table_put_attr(policy->cpu); return 0; } diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index b9a444e358b5..ce27e6c26c94 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -231,7 +231,6 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy) if (i == max_multiplier) powernow_k6_target(policy, i); } - cpufreq_frequency_table_put_attr(policy->cpu); return 0; } diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 946708a1d745..0e68e0275621 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -664,8 +664,6 @@ static int powernow_cpu_init(struct cpufreq_policy *policy) static int powernow_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); - #ifdef CONFIG_X86_POWERNOW_K7_ACPI if (acpi_processor_perf) { acpi_processor_unregister_performance(acpi_processor_perf, 0); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 6684e0342792..27eb2be44de5 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1164,8 +1164,6 @@ static int powernowk8_cpu_exit(struct cpufreq_policy *pol) powernow_k8_cpu_exit_acpi(data); - cpufreq_frequency_table_put_attr(pol->cpu); - kfree(data->powernow_table); kfree(data); for_each_cpu(cpu, pol->cpus) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 051000f44ca2..037949d575bd 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -228,7 +228,6 @@ static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy) struct cpu_data *data = per_cpu(cpu_data, policy->cpu); unsigned int cpu; - cpufreq_frequency_table_put_attr(policy->cpu); of_node_put(data->parent); kfree(data->table); kfree(data); diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c index 387af12503a6..696170ebd3a3 100644 --- a/drivers/cpufreq/sh-cpufreq.c +++ b/drivers/cpufreq/sh-cpufreq.c @@ -143,7 +143,6 @@ static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy) unsigned int cpu = policy->cpu; struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu); - cpufreq_frequency_table_put_attr(cpu); clk_put(cpuclk); return 0; diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c index 62aa23e219d4..b73feeb666f9 100644 --- a/drivers/cpufreq/sparc-us2e-cpufreq.c +++ b/drivers/cpufreq/sparc-us2e-cpufreq.c @@ -301,10 +301,8 @@ static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy) static int us2e_freq_cpu_exit(struct cpufreq_policy *policy) { - if (cpufreq_us2e_driver) { - cpufreq_frequency_table_put_attr(policy->cpu); + if (cpufreq_us2e_driver) us2e_freq_target(policy, 0); - } return 0; } diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c index 724ffbd7105d..9bb42ba50efa 100644 --- a/drivers/cpufreq/sparc-us3-cpufreq.c +++ b/drivers/cpufreq/sparc-us3-cpufreq.c @@ -156,10 +156,8 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy) static int us3_freq_cpu_exit(struct cpufreq_policy *policy) { - if (cpufreq_us3_driver) { - cpufreq_frequency_table_put_attr(policy->cpu); + if (cpufreq_us3_driver) us3_freq_target(policy, 0); - } return 0; } diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 4e1daca5ce3b..6723f0390f20 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -406,8 +406,6 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy) if (!per_cpu(centrino_model, cpu)) return -ENODEV; - cpufreq_frequency_table_put_attr(cpu); - per_cpu(centrino_model, cpu) = NULL; return 0; diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index bcfed7761029..63f00598a251 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -136,7 +136,6 @@ static int tegra_cpu_init(struct cpufreq_policy *policy) static int tegra_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); clk_disable_unprepare(cpu_clk); clk_disable_unprepare(emc_clk); return 0; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 325bab04271b..79341350f498 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -85,6 +85,7 @@ struct cpufreq_policy { * called, but you're in IRQ context */ struct cpufreq_real_policy user_policy; + struct cpufreq_frequency_table *freq_table; struct list_head policy_list; struct kobject kobj; @@ -474,7 +475,6 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy, int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy, unsigned int freq); -void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf); #ifdef CONFIG_CPU_FREQ @@ -501,9 +501,6 @@ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; extern struct freq_attr *cpufreq_generic_attr[]; -void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, - unsigned int cpu); -void cpufreq_frequency_table_put_attr(unsigned int cpu); int cpufreq_table_validate_and_show(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table); @@ -513,7 +510,6 @@ int cpufreq_generic_init(struct cpufreq_policy *policy, unsigned int transition_latency); static inline int cpufreq_generic_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); return 0; } -- cgit v1.2.3 From 979d86fac5e6dbf5c939e9a2a9fe294c9e05e42f Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 10 Mar 2014 14:53:34 +0530 Subject: cpufreq: Remove cpufreq_generic_exit() cpufreq_generic_exit() is empty now and can be deleted. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/blackfin-cpufreq.c | 1 - drivers/cpufreq/cpufreq-cpu0.c | 1 - drivers/cpufreq/cris-artpec3-cpufreq.c | 1 - drivers/cpufreq/cris-etraxfs-cpufreq.c | 1 - drivers/cpufreq/davinci-cpufreq.c | 1 - drivers/cpufreq/elanfreq.c | 1 - drivers/cpufreq/exynos-cpufreq.c | 1 - drivers/cpufreq/exynos5440-cpufreq.c | 1 - drivers/cpufreq/imx6q-cpufreq.c | 1 - drivers/cpufreq/kirkwood-cpufreq.c | 1 - drivers/cpufreq/longhaul.c | 1 - drivers/cpufreq/p4-clockmod.c | 1 - drivers/cpufreq/ppc_cbe_cpufreq.c | 1 - drivers/cpufreq/pxa2xx-cpufreq.c | 1 - drivers/cpufreq/pxa3xx-cpufreq.c | 1 - drivers/cpufreq/sc520_freq.c | 1 - drivers/cpufreq/spear-cpufreq.c | 1 - drivers/cpufreq/speedstep-ich.c | 1 - drivers/cpufreq/speedstep-smi.c | 1 - include/linux/cpufreq.h | 5 ----- 20 files changed, 24 deletions(-) diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c index e9e63fc9c2c9..a9f8e5bd0716 100644 --- a/drivers/cpufreq/blackfin-cpufreq.c +++ b/drivers/cpufreq/blackfin-cpufreq.c @@ -195,7 +195,6 @@ static struct cpufreq_driver bfin_driver = { .target_index = bfin_target, .get = bfin_getfreq_khz, .init = __bfin_cpu_init, - .exit = cpufreq_generic_exit, .name = "bfin cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index 0c12ffc0ebcb..1bf6bbac3e03 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -109,7 +109,6 @@ static struct cpufreq_driver cpu0_cpufreq_driver = { .target_index = cpu0_set_target, .get = cpufreq_generic_get, .init = cpu0_cpufreq_init, - .exit = cpufreq_generic_exit, .name = "generic_cpu0", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cris-artpec3-cpufreq.c b/drivers/cpufreq/cris-artpec3-cpufreq.c index 86559040c54c..d4573032cbbc 100644 --- a/drivers/cpufreq/cris-artpec3-cpufreq.c +++ b/drivers/cpufreq/cris-artpec3-cpufreq.c @@ -57,7 +57,6 @@ static struct cpufreq_driver cris_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cris_freq_target, .init = cris_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cris_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cris-etraxfs-cpufreq.c b/drivers/cpufreq/cris-etraxfs-cpufreq.c index 26d940d40b1d..13c3361437f7 100644 --- a/drivers/cpufreq/cris-etraxfs-cpufreq.c +++ b/drivers/cpufreq/cris-etraxfs-cpufreq.c @@ -57,7 +57,6 @@ static struct cpufreq_driver cris_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cris_freq_target, .init = cris_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cris_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/davinci-cpufreq.c b/drivers/cpufreq/davinci-cpufreq.c index 2cf33848d86e..28a16dc6e02e 100644 --- a/drivers/cpufreq/davinci-cpufreq.c +++ b/drivers/cpufreq/davinci-cpufreq.c @@ -125,7 +125,6 @@ static struct cpufreq_driver davinci_driver = { .target_index = davinci_target, .get = cpufreq_generic_get, .init = davinci_cpu_init, - .exit = cpufreq_generic_exit, .name = "davinci", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c index de08acff5101..c987e94708f5 100644 --- a/drivers/cpufreq/elanfreq.c +++ b/drivers/cpufreq/elanfreq.c @@ -198,7 +198,6 @@ static struct cpufreq_driver elanfreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = elanfreq_target, .init = elanfreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "elanfreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index 307f02e0e19c..f99cfe24e7bc 100644 --- a/drivers/cpufreq/exynos-cpufreq.c +++ b/drivers/cpufreq/exynos-cpufreq.c @@ -145,7 +145,6 @@ static struct cpufreq_driver exynos_driver = { .target_index = exynos_target, .get = cpufreq_generic_get, .init = exynos_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "exynos_cpufreq", .attr = cpufreq_generic_attr, #ifdef CONFIG_ARM_EXYNOS_CPU_FREQ_BOOST_SW diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index 49b756015316..7f776aa91e2f 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -312,7 +312,6 @@ static struct cpufreq_driver exynos_driver = { .target_index = exynos_target, .get = cpufreq_generic_get, .init = exynos_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = CPUFREQ_NAME, .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index ce69059be1fc..e27fca86fe4f 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -144,7 +144,6 @@ static struct cpufreq_driver imx6q_cpufreq_driver = { .target_index = imx6q_set_target, .get = cpufreq_generic_get, .init = imx6q_cpufreq_init, - .exit = cpufreq_generic_exit, .name = "imx6q-cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index eb7abe345b50..3d114bc5a97a 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -102,7 +102,6 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = kirkwood_cpufreq_target, .init = kirkwood_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "kirkwood-cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index 45bafddfd8ea..7b94da3d2d10 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -913,7 +913,6 @@ static struct cpufreq_driver longhaul_driver = { .target_index = longhaul_target, .get = longhaul_get, .init = longhaul_cpu_init, - .exit = cpufreq_generic_exit, .name = "longhaul", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 3d1cba9fd5f9..74f593e70e19 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -237,7 +237,6 @@ static struct cpufreq_driver p4clockmod_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cpufreq_p4_target, .init = cpufreq_p4_cpu_init, - .exit = cpufreq_generic_exit, .get = cpufreq_p4_get, .name = "p4-clockmod", .attr = cpufreq_generic_attr, diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c index e42ca9c31cea..af7b1cabd1e7 100644 --- a/drivers/cpufreq/ppc_cbe_cpufreq.c +++ b/drivers/cpufreq/ppc_cbe_cpufreq.c @@ -141,7 +141,6 @@ static struct cpufreq_driver cbe_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cbe_cpufreq_target, .init = cbe_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cbe-cpufreq", .flags = CPUFREQ_CONST_LOOPS, }; diff --git a/drivers/cpufreq/pxa2xx-cpufreq.c b/drivers/cpufreq/pxa2xx-cpufreq.c index a9195a86b069..e24269ab4e9b 100644 --- a/drivers/cpufreq/pxa2xx-cpufreq.c +++ b/drivers/cpufreq/pxa2xx-cpufreq.c @@ -427,7 +427,6 @@ static struct cpufreq_driver pxa_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = pxa_set_target, .init = pxa_cpufreq_init, - .exit = cpufreq_generic_exit, .get = pxa_cpufreq_get, .name = "PXA2xx", }; diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c index 3785687e9d70..a01275900389 100644 --- a/drivers/cpufreq/pxa3xx-cpufreq.c +++ b/drivers/cpufreq/pxa3xx-cpufreq.c @@ -205,7 +205,6 @@ static struct cpufreq_driver pxa3xx_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = pxa3xx_cpufreq_set, .init = pxa3xx_cpufreq_init, - .exit = cpufreq_generic_exit, .get = pxa3xx_cpufreq_get, .name = "pxa3xx-cpufreq", }; diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 6adb354e359c..69371bf0886d 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -93,7 +93,6 @@ static struct cpufreq_driver sc520_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = sc520_freq_target, .init = sc520_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "sc520_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 5c86e3fa5593..410b54a9346c 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -163,7 +163,6 @@ static struct cpufreq_driver spear_cpufreq_driver = { .target_index = spear_cpufreq_target, .get = cpufreq_generic_get, .init = spear_cpufreq_init, - .exit = cpufreq_generic_exit, .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c index 7639b2be2a90..394ac159312a 100644 --- a/drivers/cpufreq/speedstep-ich.c +++ b/drivers/cpufreq/speedstep-ich.c @@ -311,7 +311,6 @@ static struct cpufreq_driver speedstep_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = speedstep_target, .init = speedstep_cpu_init, - .exit = cpufreq_generic_exit, .get = speedstep_get, .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c index 998c17b42200..db5d274dc13a 100644 --- a/drivers/cpufreq/speedstep-smi.c +++ b/drivers/cpufreq/speedstep-smi.c @@ -280,7 +280,6 @@ static struct cpufreq_driver speedstep_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = speedstep_target, .init = speedstep_cpu_init, - .exit = cpufreq_generic_exit, .get = speedstep_get, .resume = speedstep_resume, .attr = cpufreq_generic_attr, diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 79341350f498..31c431e150a7 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -508,9 +508,4 @@ unsigned int cpufreq_generic_get(unsigned int cpu); int cpufreq_generic_init(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table, unsigned int transition_latency); -static inline int cpufreq_generic_exit(struct cpufreq_policy *policy) -{ - return 0; -} - #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From 96bbbe4a2a5b13c440a19dd7a5ff33de3303aac4 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 10 Mar 2014 14:53:35 +0530 Subject: cpufreq: Remove unnecessary variable/parameter 'frozen' We have used 'frozen' variable/function parameter at many places to distinguish between CPU offline/online on suspend/resume vs sysfs removals. We now have another variable cpufreq_suspended which can be used in these cases, so we can get rid of all those variables or function parameters. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 51 ++++++++++++++++++++--------------------------- 1 file changed, 22 insertions(+), 29 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index dddbefb857c9..571723b338f9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1041,13 +1041,13 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) CPUFREQ_UPDATE_POLICY_CPU, policy); } -static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, - bool frozen) +static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) { unsigned int j, cpu = dev->id; int ret = -ENOMEM; struct cpufreq_policy *policy; unsigned long flags; + bool recover_policy = cpufreq_suspended; #ifdef CONFIG_HOTPLUG_CPU struct cpufreq_policy *tpolicy; #endif @@ -1088,9 +1088,9 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, * Restore the saved policy when doing light-weight init and fall back * to the full init if that fails. */ - policy = frozen ? cpufreq_policy_restore(cpu) : NULL; + policy = recover_policy ? cpufreq_policy_restore(cpu) : NULL; if (!policy) { - frozen = false; + recover_policy = false; policy = cpufreq_policy_alloc(); if (!policy) goto nomem_out; @@ -1102,7 +1102,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, * the creation of a brand new one. So we need to perform this update * by invoking update_policy_cpu(). */ - if (frozen && cpu != policy->cpu) + if (recover_policy && cpu != policy->cpu) update_policy_cpu(policy, cpu); else policy->cpu = cpu; @@ -1130,7 +1130,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, */ cpumask_and(policy->cpus, policy->cpus, cpu_online_mask); - if (!frozen) { + if (!recover_policy) { policy->user_policy.min = policy->min; policy->user_policy.max = policy->max; } @@ -1192,7 +1192,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_START, policy); - if (!frozen) { + if (!recover_policy) { ret = cpufreq_add_dev_interface(policy, dev); if (ret) goto err_out_unregister; @@ -1206,7 +1206,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, cpufreq_init_policy(policy); - if (!frozen) { + if (!recover_policy) { policy->user_policy.policy = policy->policy; policy->user_policy.governor = policy->governor; } @@ -1229,7 +1229,7 @@ err_get_freq: if (cpufreq_driver->exit) cpufreq_driver->exit(policy); err_set_policy_cpu: - if (frozen) { + if (recover_policy) { /* Do not leave stale fallback data behind. */ per_cpu(cpufreq_cpu_data_fallback, cpu) = NULL; cpufreq_policy_put_kobj(policy); @@ -1253,7 +1253,7 @@ nomem_out: */ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) { - return __cpufreq_add_dev(dev, sif, false); + return __cpufreq_add_dev(dev, sif); } static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, @@ -1284,8 +1284,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, } static int __cpufreq_remove_dev_prepare(struct device *dev, - struct subsys_interface *sif, - bool frozen) + struct subsys_interface *sif) { unsigned int cpu = dev->id, cpus; int new_cpu, ret; @@ -1299,7 +1298,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, policy = per_cpu(cpufreq_cpu_data, cpu); /* Save the policy somewhere when doing a light-weight tear-down */ - if (frozen) + if (cpufreq_suspended) per_cpu(cpufreq_cpu_data_fallback, cpu) = policy; write_unlock_irqrestore(&cpufreq_driver_lock, flags); @@ -1332,7 +1331,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, if (new_cpu >= 0) { update_policy_cpu(policy, new_cpu); - if (!frozen) { + if (!cpufreq_suspended) { pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n", __func__, new_cpu, cpu); } @@ -1343,8 +1342,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, } static int __cpufreq_remove_dev_finish(struct device *dev, - struct subsys_interface *sif, - bool frozen) + struct subsys_interface *sif) { unsigned int cpu = dev->id, cpus; int ret; @@ -1379,7 +1377,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, } } - if (!frozen) + if (!cpufreq_suspended) cpufreq_policy_put_kobj(policy); /* @@ -1395,7 +1393,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, list_del(&policy->policy_list); write_unlock_irqrestore(&cpufreq_driver_lock, flags); - if (!frozen) + if (!cpufreq_suspended) cpufreq_policy_free(policy); } else { if (has_target()) { @@ -1425,10 +1423,10 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif) if (cpu_is_offline(cpu)) return 0; - ret = __cpufreq_remove_dev_prepare(dev, sif, false); + ret = __cpufreq_remove_dev_prepare(dev, sif); if (!ret) - ret = __cpufreq_remove_dev_finish(dev, sif, false); + ret = __cpufreq_remove_dev_finish(dev, sif); return ret; } @@ -2182,29 +2180,24 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb, { unsigned int cpu = (unsigned long)hcpu; struct device *dev; - bool frozen = false; dev = get_cpu_device(cpu); if (dev) { - - if (action & CPU_TASKS_FROZEN) - frozen = true; - switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: - __cpufreq_add_dev(dev, NULL, frozen); + __cpufreq_add_dev(dev, NULL); break; case CPU_DOWN_PREPARE: - __cpufreq_remove_dev_prepare(dev, NULL, frozen); + __cpufreq_remove_dev_prepare(dev, NULL); break; case CPU_POST_DEAD: - __cpufreq_remove_dev_finish(dev, NULL, frozen); + __cpufreq_remove_dev_finish(dev, NULL); break; case CPU_DOWN_FAILED: - __cpufreq_add_dev(dev, NULL, frozen); + __cpufreq_add_dev(dev, NULL); break; } } -- cgit v1.2.3 From 2449d33a40553504867f407dd713e9bcf6f9fe24 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 10 Mar 2014 15:43:18 +0530 Subject: cpufreq: SPEAr: Instantiate as platform_driver As multiplatform build is being adopted by more and more ARM platforms, initcall function should be used very carefully. For example, when SPEAr cpufreq driver is enabled on a kernel booted on a non-SPEAr board, we will get following boot time error: spear_cpufreq: Invalid cpufreq_tbl To eliminate this undesired the effect, the patch changes SPEAr driver to have it instantiated as a platform_driver. Then it will only run on platforms that create the platform_device "spear-cpufreq". This patch also creates platform node for SPEAr13xx boards. Reported-by: Josh Cartwright Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-spear/spear1310.c | 1 + arch/arm/mach-spear/spear1340.c | 1 + drivers/cpufreq/spear-cpufreq.c | 13 +++++++++++-- 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-spear/spear1310.c b/arch/arm/mach-spear/spear1310.c index 7ad003001ab7..824b12a56a42 100644 --- a/arch/arm/mach-spear/spear1310.c +++ b/arch/arm/mach-spear/spear1310.c @@ -28,6 +28,7 @@ static void __init spear1310_dt_init(void) { of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + platform_device_register_simple("spear-cpufreq", -1, NULL, 0); } static const char * const spear1310_dt_board_compat[] = { diff --git a/arch/arm/mach-spear/spear1340.c b/arch/arm/mach-spear/spear1340.c index 3fb683424729..7b6bff7154e1 100644 --- a/arch/arm/mach-spear/spear1340.c +++ b/arch/arm/mach-spear/spear1340.c @@ -143,6 +143,7 @@ static void __init spear1340_dt_init(void) { of_platform_populate(NULL, of_default_bus_match_table, spear1340_auxdata_lookup, NULL); + platform_device_register_simple("spear-cpufreq", -1, NULL, 0); } static const char * const spear1340_dt_board_compat[] = { diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 410b54a9346c..4cfdcff8a310 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -166,7 +167,7 @@ static struct cpufreq_driver spear_cpufreq_driver = { .attr = cpufreq_generic_attr, }; -static int spear_cpufreq_driver_init(void) +static int spear_cpufreq_probe(struct platform_device *pdev) { struct device_node *np; const struct property *prop; @@ -234,7 +235,15 @@ out_put_node: of_node_put(np); return ret; } -late_initcall(spear_cpufreq_driver_init); + +static struct platform_driver spear_cpufreq_platdrv = { + .driver = { + .name = "spear-cpufreq", + .owner = THIS_MODULE, + }, + .probe = spear_cpufreq_probe, +}; +module_platform_driver(spear_cpufreq_platdrv); MODULE_AUTHOR("Deepak Sikri "); MODULE_DESCRIPTION("SPEAr CPUFreq driver"); -- cgit v1.2.3 From 0a16d12a8e8df523022b458dae33dc4288d18dd1 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:31:18 +0800 Subject: ACPICA: Comment update - no functional change. Change all instances of "sub-package" to "subpackage" for consistency. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acpredef.h | 8 ++++---- drivers/acpi/acpica/nsprepkg.c | 40 ++++++++++++++++++++-------------------- drivers/acpi/acpica/nsrepair.c | 4 ++-- drivers/acpi/acpica/nsrepair2.c | 16 ++++++++-------- drivers/acpi/acpica/rscalc.c | 2 +- drivers/acpi/acpica/rscreate.c | 4 ++-- 6 files changed, 37 insertions(+), 37 deletions(-) diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index 393826bee42d..c99bc04a5efe 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -50,7 +50,7 @@ * * Return Package types * - * 1) PTYPE1 packages do not contain sub-packages. + * 1) PTYPE1 packages do not contain subpackages. * * ACPI_PTYPE1_FIXED: Fixed-length length, 1 or 2 object types: * object type @@ -65,8 +65,8 @@ * (Used for _PRW) * * - * 2) PTYPE2 packages contain a Variable-length number of sub-packages. Each - * of the different types describe the contents of each of the sub-packages. + * 2) PTYPE2 packages contain a Variable-length number of subpackages. Each + * of the different types describe the contents of each of the subpackages. * * ACPI_PTYPE2: Each subpackage contains 1 or 2 object types. Zero-length * parent package is allowed: @@ -562,7 +562,7 @@ const union acpi_predefined_info acpi_gbl_predefined_methods[] = { /* * For _HPX, a single package is returned, containing a variable-length number - * of sub-packages. Each sub-package contains a PCI record setting. + * of subpackages. Each subpackage contains a PCI record setting. * There are several different type of record settings, of different * lengths, but all elements of all settings are Integers. */ diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c index 61faf77afc18..68f725839eb6 100644 --- a/drivers/acpi/acpica/nsprepkg.c +++ b/drivers/acpi/acpica/nsprepkg.c @@ -132,12 +132,12 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, * Decode the type of the expected package contents * * PTYPE1 packages contain no subpackages - * PTYPE2 packages contain sub-packages + * PTYPE2 packages contain subpackages */ switch (package->ret_info.type) { case ACPI_PTYPE1_FIXED: /* - * The package count is fixed and there are no sub-packages + * The package count is fixed and there are no subpackages * * If package is too small, exit. * If package is larger than expected, issue warning but continue @@ -169,7 +169,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, case ACPI_PTYPE1_VAR: /* - * The package count is variable, there are no sub-packages, and all + * The package count is variable, there are no subpackages, and all * elements must be of the same type */ for (i = 0; i < count; i++) { @@ -185,7 +185,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, case ACPI_PTYPE1_OPTION: /* - * The package count is variable, there are no sub-packages. There are + * The package count is variable, there are no subpackages. There are * a fixed number of required elements, and a variable number of * optional elements. * @@ -242,7 +242,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, elements++; count--; - /* Examine the sub-packages */ + /* Examine the subpackages */ status = acpi_ns_check_package_list(info, package, elements, count); @@ -250,7 +250,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, case ACPI_PTYPE2_PKG_COUNT: - /* First element is the (Integer) count of sub-packages to follow */ + /* First element is the (Integer) count of subpackages to follow */ status = acpi_ns_check_object_type(info, elements, ACPI_RTYPE_INTEGER, 0); @@ -270,7 +270,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, count = expected_count; elements++; - /* Examine the sub-packages */ + /* Examine the subpackages */ status = acpi_ns_check_package_list(info, package, elements, count); @@ -283,9 +283,9 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, case ACPI_PTYPE2_FIX_VAR: /* * These types all return a single Package that consists of a - * variable number of sub-Packages. + * variable number of subpackages. * - * First, ensure that the first element is a sub-Package. If not, + * First, ensure that the first element is a subpackage. If not, * the BIOS may have incorrectly returned the object as a single * package instead of a Package of Packages (a common error if * there is only one entry). We may be able to repair this by @@ -310,7 +310,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info, count = 1; } - /* Examine the sub-packages */ + /* Examine the subpackages */ status = acpi_ns_check_package_list(info, package, elements, count); @@ -370,9 +370,9 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, u32 j; /* - * Validate each sub-Package in the parent Package + * Validate each subpackage in the parent Package * - * NOTE: assumes list of sub-packages contains no NULL elements. + * NOTE: assumes list of subpackages contains no NULL elements. * Any NULL elements should have been removed by earlier call * to acpi_ns_remove_null_elements. */ @@ -389,7 +389,7 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, return (status); } - /* Examine the different types of expected sub-packages */ + /* Examine the different types of expected subpackages */ info->parent_package = sub_package; switch (package->ret_info.type) { @@ -450,14 +450,14 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, case ACPI_PTYPE2_FIXED: - /* Each sub-package has a fixed length */ + /* Each subpackage has a fixed length */ expected_count = package->ret_info2.count; if (sub_package->package.count < expected_count) { goto package_too_small; } - /* Check the type of each sub-package element */ + /* Check the type of each subpackage element */ for (j = 0; j < expected_count; j++) { status = @@ -475,14 +475,14 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, case ACPI_PTYPE2_MIN: - /* Each sub-package has a variable but minimum length */ + /* Each subpackage has a variable but minimum length */ expected_count = package->ret_info.count1; if (sub_package->package.count < expected_count) { goto package_too_small; } - /* Check the type of each sub-package element */ + /* Check the type of each subpackage element */ status = acpi_ns_check_package_elements(info, sub_elements, @@ -531,7 +531,7 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, (*sub_elements)->integer.value = expected_count; } - /* Check the type of each sub-package element */ + /* Check the type of each subpackage element */ status = acpi_ns_check_package_elements(info, @@ -557,10 +557,10 @@ acpi_ns_check_package_list(struct acpi_evaluate_info *info, package_too_small: - /* The sub-package count was smaller than required */ + /* The subpackage count was smaller than required */ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags, - "Return Sub-Package[%u] is too small - found %u elements, expected %u", + "Return SubPackage[%u] is too small - found %u elements, expected %u", i, sub_package->package.count, expected_count)); return (AE_AML_OPERAND_VALUE); diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 21b6402e5245..7e417aa5c91e 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -465,7 +465,7 @@ acpi_ns_repair_null_element(struct acpi_evaluate_info * info, * RETURN: None. * * DESCRIPTION: Remove all NULL package elements from packages that contain - * a variable number of sub-packages. For these types of + * a variable number of subpackages. For these types of * packages, NULL elements can be safely removed. * *****************************************************************************/ @@ -486,7 +486,7 @@ acpi_ns_remove_null_elements(struct acpi_evaluate_info *info, /* * We can safely remove all NULL elements from these package types: * PTYPE1_VAR packages contain a variable number of simple data types. - * PTYPE2 packages contain a variable number of sub-packages. + * PTYPE2 packages contain a variable number of subpackages. */ switch (package_type) { case ACPI_PTYPE1_VAR: diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index 18012140de1f..b09e6bef72b8 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -432,8 +432,8 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info, * DESCRIPTION: Repair for the _CST object: * 1. Sort the list ascending by C state type * 2. Ensure type cannot be zero - * 3. A sub-package count of zero means _CST is meaningless - * 4. Count must match the number of C state sub-packages + * 3. A subpackage count of zero means _CST is meaningless + * 4. Count must match the number of C state subpackages * *****************************************************************************/ @@ -686,7 +686,7 @@ acpi_ns_repair_PSS(struct acpi_evaluate_info *info, u32 i; /* - * Entries (sub-packages) in the _PSS Package must be sorted by power + * Entries (subpackages) in the _PSS Package must be sorted by power * dissipation, in descending order. If it appears that the list is * incorrectly sorted, sort it. We sort by cpu_frequency, since this * should be proportional to the power. @@ -774,9 +774,9 @@ acpi_ns_repair_TSS(struct acpi_evaluate_info *info, * * PARAMETERS: info - Method execution information block * return_object - Pointer to the top-level returned object - * start_index - Index of the first sub-package - * expected_count - Minimum length of each sub-package - * sort_index - Sub-package entry to sort on + * start_index - Index of the first subpackage + * expected_count - Minimum length of each subpackage + * sort_index - Subpackage entry to sort on * sort_direction - Ascending or descending * sort_key_name - Name of the sort_index field * @@ -812,7 +812,7 @@ acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, } /* - * NOTE: assumes list of sub-packages contains no NULL elements. + * NOTE: assumes list of subpackages contains no NULL elements. * Any NULL elements should have been removed by earlier call * to acpi_ns_remove_null_elements. */ @@ -839,7 +839,7 @@ acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, return (AE_AML_OPERAND_TYPE); } - /* Each sub-package must have the minimum length */ + /* Each subpackage must have the minimum length */ if ((*outer_elements)->package.count < expected_count) { return (AE_AML_PACKAGE_LIMIT); diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c index ae9a9cf0f50f..689556744b03 100644 --- a/drivers/acpi/acpica/rscalc.c +++ b/drivers/acpi/acpica/rscalc.c @@ -636,7 +636,7 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object, for (index = 0; index < number_of_elements; index++) { - /* Dereference the sub-package */ + /* Dereference the subpackage */ package_element = *top_object_list; diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c index f4cd6cad6607..75d369050657 100644 --- a/drivers/acpi/acpica/rscreate.c +++ b/drivers/acpi/acpica/rscreate.c @@ -273,7 +273,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, */ user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); - /* Each sub-package must be of length 4 */ + /* Each subpackage must be of length 4 */ if ((*top_object_list)->package.count != 4) { ACPI_ERROR((AE_INFO, @@ -283,7 +283,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, } /* - * Dereference the sub-package. + * Dereference the subpackage. * The sub_object_list will now point to an array of the four IRQ * elements: [Address, Pin, Source, source_index] */ -- cgit v1.2.3 From 3aa0b085f62f771072dca7ad7f5554a11a83cf7e Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 26 Feb 2014 10:32:38 +0800 Subject: ACPICA: Cleanup/improve global variable declarations. This change cleans up the entire global variable mechaninism including the related macros. Also reduces warnings from the "sparse" utility in the Linux environment. Lv Zheng. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acglobal.h | 353 ++++++++++++++++++++--------------------- drivers/acpi/acpica/utglobal.c | 37 +++-- 2 files changed, 189 insertions(+), 201 deletions(-) diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 203b2dc5ea28..7cc7ffef04d2 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -53,11 +53,19 @@ * to simplify maintenance of the code. */ #ifdef DEFINE_ACPI_GLOBALS -#define ACPI_EXTERN -#define ACPI_INIT_GLOBAL(a,b) a=b +#define ACPI_GLOBAL(type,name) \ + extern type name; \ + type name + +#define ACPI_INIT_GLOBAL(type,name,value) \ + type name=value + #else -#define ACPI_EXTERN extern -#define ACPI_INIT_GLOBAL(a,b) a +#define ACPI_GLOBAL(type,name) \ + extern type name + +#define ACPI_INIT_GLOBAL(type,name,value) \ + extern type name #endif #ifdef DEFINE_ACPI_GLOBALS @@ -84,7 +92,7 @@ * 5) Allow unresolved references (invalid target name) in package objects * 6) Enable warning messages for behavior that is not ACPI spec compliant */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_interpreter_slack, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_interpreter_slack, FALSE); /* * Automatically serialize ALL control methods? Default is FALSE, meaning @@ -92,25 +100,25 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_interpreter_slack, FALSE); * Only change this if the ASL code is poorly written and cannot handle * reentrancy even though methods are marked "NotSerialized". */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_all_methods_serialized, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_all_methods_serialized, FALSE); /* * Create the predefined _OSI method in the namespace? Default is TRUE * because ACPI CA is fully compatible with other ACPI implementations. * Changing this will revert ACPI CA (and machine ASL) to pre-OSI behavior. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_create_osi_method, TRUE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_create_osi_method, TRUE); /* * Optionally use default values for the ACPI register widths. Set this to * TRUE to use the defaults, if an FADT contains incorrect widths/lengths. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_use_default_register_widths, TRUE); /* * Optionally enable output from the AML Debug Object. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_aml_debug_object, FALSE); /* * Optionally copy the entire DSDT to local memory (instead of simply @@ -118,7 +126,7 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE); * DSDT, creating the need for this option. Default is FALSE, do not copy * the DSDT. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_copy_dsdt_locally, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_copy_dsdt_locally, FALSE); /* * Optionally ignore an XSDT if present and use the RSDT instead. @@ -126,7 +134,7 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_copy_dsdt_locally, FALSE); * of the RSDT, the XSDT has been found to be corrupt or ill-formed on * some machines. Default behavior is to use the XSDT if present. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_do_not_use_xsdt, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_do_not_use_xsdt, FALSE); /* * Optionally use 32-bit FADT addresses if and when there is a conflict @@ -136,7 +144,7 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_do_not_use_xsdt, FALSE); * some machines have been found to have a corrupted non-zero 64-bit * address. Default is FALSE, do not favor the 32-bit addresses. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_use32_bit_fadt_addresses, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, FALSE); /* * Optionally truncate I/O addresses to 16 bits. Provides compatibility @@ -144,47 +152,28 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_use32_bit_fadt_addresses, FALSE); * this value is set to TRUE if any Windows OSI strings have been * requested by the BIOS. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_truncate_io_addresses, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_truncate_io_addresses, FALSE); /* * Disable runtime checking and repair of values returned by control methods. * Use only if the repair is causing a problem on a particular machine. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_disable_auto_repair, FALSE); /* * Optionally do not load any SSDTs from the RSDT/XSDT during initialization. * This can be useful for debugging ACPI problems on some machines. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_ssdt_table_load, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_disable_ssdt_table_load, FALSE); /* * We keep track of the latest version of Windows that has been requested by * the BIOS. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_osi_data, 0); - -/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */ - -struct acpi_table_fadt acpi_gbl_FADT; -u32 acpi_current_gpe_count; -u32 acpi_gbl_trace_flags; -acpi_name acpi_gbl_trace_method_name; -u8 acpi_gbl_system_awake_and_running; - -/* - * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning - * that the ACPI hardware is no longer required. A flag in the FADT indicates - * a reduced HW machine, and that flag is duplicated here for convenience. - */ -u8 acpi_gbl_reduced_hardware; +ACPI_INIT_GLOBAL(u8, acpi_gbl_osi_data, 0); #endif /* DEFINE_ACPI_GLOBALS */ -/* Do not disassemble buffers to resource descriptors */ - -ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_no_resource_disassembly, FALSE); - /***************************************************************************** * * ACPI Table globals @@ -192,37 +181,36 @@ ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_no_resource_disassembly, FALSE); ****************************************************************************/ /* - * acpi_gbl_root_table_list is the master list of ACPI tables that were - * found in the RSDT/XSDT. + * Master list of all ACPI tables that were found in the RSDT/XSDT. */ -ACPI_EXTERN struct acpi_table_list acpi_gbl_root_table_list; +ACPI_GLOBAL(struct acpi_table_list, acpi_gbl_root_table_list); + +/* DSDT information. Used to check for DSDT corruption */ + +ACPI_GLOBAL(struct acpi_table_header *, acpi_gbl_DSDT); +ACPI_GLOBAL(struct acpi_table_header, acpi_gbl_original_dsdt_header); #if (!ACPI_REDUCED_HARDWARE) -ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS; +ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_FACS); #endif /* !ACPI_REDUCED_HARDWARE */ /* These addresses are calculated from the FADT Event Block addresses */ -ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status; -ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_enable; - -ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_status; -ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_enable; +ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1a_status); +ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1a_enable); -/* DSDT information. Used to check for DSDT corruption */ - -ACPI_EXTERN struct acpi_table_header *acpi_gbl_DSDT; -ACPI_EXTERN struct acpi_table_header acpi_gbl_original_dsdt_header; +ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_status); +ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_enable); /* - * Handle both ACPI 1.0 and ACPI 2.0 Integer widths. The integer width is + * Handle both ACPI 1.0 and ACPI 2.0+ Integer widths. The integer width is * determined by the revision of the DSDT: If the DSDT revision is less than * 2, use only the lower 32 bits of the internal 64-bit Integer. */ -ACPI_EXTERN u8 acpi_gbl_integer_bit_width; -ACPI_EXTERN u8 acpi_gbl_integer_byte_width; -ACPI_EXTERN u8 acpi_gbl_integer_nybble_width; +ACPI_GLOBAL(u8, acpi_gbl_integer_bit_width); +ACPI_GLOBAL(u8, acpi_gbl_integer_byte_width); +ACPI_GLOBAL(u8, acpi_gbl_integer_nybble_width); /***************************************************************************** * @@ -235,36 +223,36 @@ ACPI_EXTERN u8 acpi_gbl_integer_nybble_width; * actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs. * (The table maps local handles to the real OS handles) */ -ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX]; +ACPI_GLOBAL(struct acpi_mutex_info, acpi_gbl_mutex_info[ACPI_NUM_MUTEX]); /* * Global lock mutex is an actual AML mutex object * Global lock semaphore works in conjunction with the actual global lock * Global lock spinlock is used for "pending" handshake */ -ACPI_EXTERN union acpi_operand_object *acpi_gbl_global_lock_mutex; -ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore; -ACPI_EXTERN acpi_spinlock acpi_gbl_global_lock_pending_lock; -ACPI_EXTERN u16 acpi_gbl_global_lock_handle; -ACPI_EXTERN u8 acpi_gbl_global_lock_acquired; -ACPI_EXTERN u8 acpi_gbl_global_lock_present; -ACPI_EXTERN u8 acpi_gbl_global_lock_pending; +ACPI_GLOBAL(union acpi_operand_object *, acpi_gbl_global_lock_mutex); +ACPI_GLOBAL(acpi_semaphore, acpi_gbl_global_lock_semaphore); +ACPI_GLOBAL(acpi_spinlock, acpi_gbl_global_lock_pending_lock); +ACPI_GLOBAL(u16, acpi_gbl_global_lock_handle); +ACPI_GLOBAL(u8, acpi_gbl_global_lock_acquired); +ACPI_GLOBAL(u8, acpi_gbl_global_lock_present); +ACPI_GLOBAL(u8, acpi_gbl_global_lock_pending); /* * Spinlocks are used for interfaces that can be possibly called at * interrupt level */ -ACPI_EXTERN acpi_spinlock acpi_gbl_gpe_lock; /* For GPE data structs and registers */ -ACPI_EXTERN acpi_spinlock acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ -ACPI_EXTERN acpi_spinlock acpi_gbl_reference_count_lock; +ACPI_GLOBAL(acpi_spinlock, acpi_gbl_gpe_lock); /* For GPE data structs and registers */ +ACPI_GLOBAL(acpi_spinlock, acpi_gbl_hardware_lock); /* For ACPI H/W except GPE registers */ +ACPI_GLOBAL(acpi_spinlock, acpi_gbl_reference_count_lock); /* Mutex for _OSI support */ -ACPI_EXTERN acpi_mutex acpi_gbl_osi_mutex; +ACPI_GLOBAL(acpi_mutex, acpi_gbl_osi_mutex); /* Reader/Writer lock is used for namespace walk and dynamic table unload */ -ACPI_EXTERN struct acpi_rw_lock acpi_gbl_namespace_rw_lock; +ACPI_GLOBAL(struct acpi_rw_lock, acpi_gbl_namespace_rw_lock); /***************************************************************************** * @@ -274,70 +262,69 @@ ACPI_EXTERN struct acpi_rw_lock acpi_gbl_namespace_rw_lock; /* Object caches */ -ACPI_EXTERN acpi_cache_t *acpi_gbl_namespace_cache; -ACPI_EXTERN acpi_cache_t *acpi_gbl_state_cache; -ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_cache; -ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_ext_cache; -ACPI_EXTERN acpi_cache_t *acpi_gbl_operand_cache; +ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_namespace_cache); +ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_state_cache); +ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_ps_node_cache); +ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_ps_node_ext_cache); +ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_operand_cache); + +/* System */ + +ACPI_INIT_GLOBAL(u32, acpi_gbl_startup_flags, 0); +ACPI_INIT_GLOBAL(u8, acpi_gbl_shutdown, TRUE); /* Global handlers */ -ACPI_EXTERN struct acpi_global_notify_handler acpi_gbl_global_notify[2]; -ACPI_EXTERN acpi_exception_handler acpi_gbl_exception_handler; -ACPI_EXTERN acpi_init_handler acpi_gbl_init_handler; -ACPI_EXTERN acpi_table_handler acpi_gbl_table_handler; -ACPI_EXTERN void *acpi_gbl_table_handler_context; -ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk; -ACPI_EXTERN acpi_interface_handler acpi_gbl_interface_handler; -ACPI_EXTERN struct acpi_sci_handler_info *acpi_gbl_sci_handler_list; +ACPI_GLOBAL(struct acpi_global_notify_handler, acpi_gbl_global_notify[2]); +ACPI_GLOBAL(acpi_exception_handler, acpi_gbl_exception_handler); +ACPI_GLOBAL(acpi_init_handler, acpi_gbl_init_handler); +ACPI_GLOBAL(acpi_table_handler, acpi_gbl_table_handler); +ACPI_GLOBAL(void *, acpi_gbl_table_handler_context); +ACPI_GLOBAL(struct acpi_walk_state *, acpi_gbl_breakpoint_walk); +ACPI_GLOBAL(acpi_interface_handler, acpi_gbl_interface_handler); +ACPI_GLOBAL(struct acpi_sci_handler_info *, acpi_gbl_sci_handler_list); /* Owner ID support */ -ACPI_EXTERN u32 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS]; -ACPI_EXTERN u8 acpi_gbl_last_owner_id_index; -ACPI_EXTERN u8 acpi_gbl_next_owner_id_offset; +ACPI_GLOBAL(u32, acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS]); +ACPI_GLOBAL(u8, acpi_gbl_last_owner_id_index); +ACPI_GLOBAL(u8, acpi_gbl_next_owner_id_offset); /* Initialization sequencing */ -ACPI_EXTERN u8 acpi_gbl_reg_methods_executed; +ACPI_GLOBAL(u8, acpi_gbl_reg_methods_executed); /* Misc */ -ACPI_EXTERN u32 acpi_gbl_original_mode; -ACPI_EXTERN u32 acpi_gbl_rsdp_original_location; -ACPI_EXTERN u32 acpi_gbl_ns_lookup_count; -ACPI_EXTERN u32 acpi_gbl_ps_find_count; -ACPI_EXTERN u16 acpi_gbl_pm1_enable_register_save; -ACPI_EXTERN u8 acpi_gbl_debugger_configuration; -ACPI_EXTERN u8 acpi_gbl_step_to_next_call; -ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present; -ACPI_EXTERN u8 acpi_gbl_events_initialized; -ACPI_EXTERN struct acpi_interface_info *acpi_gbl_supported_interfaces; -ACPI_EXTERN struct acpi_address_range - *acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX]; - -#ifndef DEFINE_ACPI_GLOBALS - -/* Other miscellaneous */ - -extern u8 acpi_gbl_shutdown; -extern u32 acpi_gbl_startup_flags; +ACPI_GLOBAL(u32, acpi_gbl_original_mode); +ACPI_GLOBAL(u32, acpi_gbl_rsdp_original_location); +ACPI_GLOBAL(u32, acpi_gbl_ns_lookup_count); +ACPI_GLOBAL(u32, acpi_gbl_ps_find_count); +ACPI_GLOBAL(u16, acpi_gbl_pm1_enable_register_save); +ACPI_GLOBAL(u8, acpi_gbl_debugger_configuration); +ACPI_GLOBAL(u8, acpi_gbl_step_to_next_call); +ACPI_GLOBAL(u8, acpi_gbl_acpi_hardware_present); +ACPI_GLOBAL(u8, acpi_gbl_events_initialized); +ACPI_GLOBAL(struct acpi_interface_info *, acpi_gbl_supported_interfaces); +ACPI_GLOBAL(struct acpi_address_range *, + acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX]); + +/* Other miscellaneous, declared and initialized in utglobal */ + extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT]; extern const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS]; extern const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS]; -extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES]; extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS]; - -#endif +extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES]; #ifdef ACPI_DBG_TRACK_ALLOCATIONS -/* Lists for tracking memory allocations */ +/* Lists for tracking memory allocations (debug only) */ -ACPI_EXTERN struct acpi_memory_list *acpi_gbl_global_list; -ACPI_EXTERN struct acpi_memory_list *acpi_gbl_ns_node_list; -ACPI_EXTERN u8 acpi_gbl_display_final_mem_stats; -ACPI_EXTERN u8 acpi_gbl_disable_mem_tracking; +ACPI_GLOBAL(struct acpi_memory_list *, acpi_gbl_global_list); +ACPI_GLOBAL(struct acpi_memory_list *, acpi_gbl_ns_node_list); +ACPI_GLOBAL(u8, acpi_gbl_display_final_mem_stats); +ACPI_GLOBAL(u8, acpi_gbl_disable_mem_tracking); #endif /***************************************************************************** @@ -352,22 +339,23 @@ ACPI_EXTERN u8 acpi_gbl_disable_mem_tracking; #define NUM_PREDEFINED_NAMES 9 #endif -ACPI_EXTERN struct acpi_namespace_node acpi_gbl_root_node_struct; -ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_root_node; -ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_fadt_gpe_device; -ACPI_EXTERN union acpi_operand_object *acpi_gbl_module_code_list; +ACPI_GLOBAL(struct acpi_namespace_node, acpi_gbl_root_node_struct); +ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_root_node); +ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_fadt_gpe_device); +ACPI_GLOBAL(union acpi_operand_object *, acpi_gbl_module_code_list); extern const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES]; extern const struct acpi_predefined_names acpi_gbl_pre_defined_names[NUM_PREDEFINED_NAMES]; #ifdef ACPI_DEBUG_OUTPUT -ACPI_EXTERN u32 acpi_gbl_current_node_count; -ACPI_EXTERN u32 acpi_gbl_current_node_size; -ACPI_EXTERN u32 acpi_gbl_max_concurrent_node_count; -ACPI_EXTERN acpi_size *acpi_gbl_entry_stack_pointer; -ACPI_EXTERN acpi_size *acpi_gbl_lowest_stack_pointer; -ACPI_EXTERN u32 acpi_gbl_deepest_nesting; +ACPI_GLOBAL(u32, acpi_gbl_current_node_count); +ACPI_GLOBAL(u32, acpi_gbl_current_node_size); +ACPI_GLOBAL(u32, acpi_gbl_max_concurrent_node_count); +ACPI_GLOBAL(acpi_size *, acpi_gbl_entry_stack_pointer); +ACPI_GLOBAL(acpi_size *, acpi_gbl_lowest_stack_pointer); +ACPI_GLOBAL(u32, acpi_gbl_deepest_nesting); +ACPI_INIT_GLOBAL(u32, acpi_gbl_nesting_level, 0); #endif /***************************************************************************** @@ -376,11 +364,11 @@ ACPI_EXTERN u32 acpi_gbl_deepest_nesting; * ****************************************************************************/ -ACPI_EXTERN struct acpi_thread_state *acpi_gbl_current_walk_list; +ACPI_GLOBAL(struct acpi_thread_state *, acpi_gbl_current_walk_list); /* Control method single step flag */ -ACPI_EXTERN u8 acpi_gbl_cm_single_step; +ACPI_GLOBAL(u8, acpi_gbl_cm_single_step); /***************************************************************************** * @@ -390,8 +378,9 @@ ACPI_EXTERN u8 acpi_gbl_cm_single_step; extern struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG]; -ACPI_EXTERN u8 acpi_gbl_sleep_type_a; -ACPI_EXTERN u8 acpi_gbl_sleep_type_b; + +ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a); +ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b); /***************************************************************************** * @@ -401,14 +390,15 @@ ACPI_EXTERN u8 acpi_gbl_sleep_type_b; #if (!ACPI_REDUCED_HARDWARE) -ACPI_EXTERN u8 acpi_gbl_all_gpes_initialized; -ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head; -ACPI_EXTERN struct acpi_gpe_block_info - *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS]; -ACPI_EXTERN acpi_gbl_event_handler acpi_gbl_global_event_handler; -ACPI_EXTERN void *acpi_gbl_global_event_handler_context; -ACPI_EXTERN struct acpi_fixed_event_handler - acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS]; +ACPI_GLOBAL(u8, acpi_gbl_all_gpes_initialized); +ACPI_GLOBAL(struct acpi_gpe_xrupt_info *, acpi_gbl_gpe_xrupt_list_head); +ACPI_GLOBAL(struct acpi_gpe_block_info *, + acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS]); +ACPI_GLOBAL(acpi_gbl_event_handler, acpi_gbl_global_event_handler); +ACPI_GLOBAL(void *, acpi_gbl_global_event_handler_context); +ACPI_GLOBAL(struct acpi_fixed_event_handler, + acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS]); + extern struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS]; @@ -420,23 +410,19 @@ extern struct acpi_fixed_event_info * ****************************************************************************/ -/* Procedure nesting level for debug output */ - -extern u32 acpi_gbl_nesting_level; - /* Event counters */ -ACPI_EXTERN u32 acpi_method_count; -ACPI_EXTERN u32 acpi_gpe_count; -ACPI_EXTERN u32 acpi_sci_count; -ACPI_EXTERN u32 acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS]; +ACPI_GLOBAL(u32, acpi_method_count); +ACPI_GLOBAL(u32, acpi_gpe_count); +ACPI_GLOBAL(u32, acpi_sci_count); +ACPI_GLOBAL(u32, acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS]); /* Support for dynamic control method tracing mechanism */ -ACPI_EXTERN u32 acpi_gbl_original_dbg_level; -ACPI_EXTERN u32 acpi_gbl_original_dbg_layer; -ACPI_EXTERN u32 acpi_gbl_trace_dbg_level; -ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer; +ACPI_GLOBAL(u32, acpi_gbl_original_dbg_level); +ACPI_GLOBAL(u32, acpi_gbl_original_dbg_layer); +ACPI_GLOBAL(u32, acpi_gbl_trace_dbg_level); +ACPI_GLOBAL(u32, acpi_gbl_trace_dbg_layer); /***************************************************************************** * @@ -444,61 +430,64 @@ ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer; * ****************************************************************************/ -ACPI_EXTERN u8 acpi_gbl_db_output_flags; +ACPI_GLOBAL(u8, acpi_gbl_db_output_flags); #ifdef ACPI_DISASSEMBLER -ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_ignore_noop_operator, FALSE); +/* Do not disassemble buffers to resource descriptors */ + +ACPI_INIT_GLOBAL(u8, acpi_gbl_no_resource_disassembly, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_ignore_noop_operator, FALSE); -ACPI_EXTERN u8 acpi_gbl_db_opt_disasm; -ACPI_EXTERN u8 acpi_gbl_db_opt_verbose; -ACPI_EXTERN u8 acpi_gbl_num_external_methods; -ACPI_EXTERN u32 acpi_gbl_resolved_external_methods; -ACPI_EXTERN struct acpi_external_list *acpi_gbl_external_list; -ACPI_EXTERN struct acpi_external_file *acpi_gbl_external_file_list; +ACPI_GLOBAL(u8, acpi_gbl_db_opt_disasm); +ACPI_GLOBAL(u8, acpi_gbl_db_opt_verbose); +ACPI_GLOBAL(u8, acpi_gbl_num_external_methods); +ACPI_GLOBAL(u32, acpi_gbl_resolved_external_methods); +ACPI_GLOBAL(struct acpi_external_list *, acpi_gbl_external_list); +ACPI_GLOBAL(struct acpi_external_file *, acpi_gbl_external_file_list); #endif #ifdef ACPI_DEBUGGER -extern u8 acpi_gbl_method_executing; -extern u8 acpi_gbl_abort_method; -extern u8 acpi_gbl_db_terminate_threads; +ACPI_INIT_GLOBAL(u8, acpi_gbl_db_terminate_threads, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_abort_method, FALSE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_method_executing, FALSE); -ACPI_EXTERN u8 acpi_gbl_db_opt_tables; -ACPI_EXTERN u8 acpi_gbl_db_opt_stats; -ACPI_EXTERN u8 acpi_gbl_db_opt_ini_methods; -ACPI_EXTERN u8 acpi_gbl_db_opt_no_region_support; -ACPI_EXTERN u8 acpi_gbl_db_output_to_file; -ACPI_EXTERN char *acpi_gbl_db_buffer; -ACPI_EXTERN char *acpi_gbl_db_filename; -ACPI_EXTERN u32 acpi_gbl_db_debug_level; -ACPI_EXTERN u32 acpi_gbl_db_console_debug_level; -ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_db_scope_node; +ACPI_GLOBAL(u8, acpi_gbl_db_opt_tables); +ACPI_GLOBAL(u8, acpi_gbl_db_opt_stats); +ACPI_GLOBAL(u8, acpi_gbl_db_opt_ini_methods); +ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_region_support); +ACPI_GLOBAL(u8, acpi_gbl_db_output_to_file); +ACPI_GLOBAL(char *, acpi_gbl_db_buffer); +ACPI_GLOBAL(char *, acpi_gbl_db_filename); +ACPI_GLOBAL(u32, acpi_gbl_db_debug_level); +ACPI_GLOBAL(u32, acpi_gbl_db_console_debug_level); +ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_db_scope_node); -ACPI_EXTERN char *acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS]; -ACPI_EXTERN acpi_object_type acpi_gbl_db_arg_types[ACPI_DEBUGGER_MAX_ARGS]; +ACPI_GLOBAL(char *, acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS]); +ACPI_GLOBAL(acpi_object_type, acpi_gbl_db_arg_types[ACPI_DEBUGGER_MAX_ARGS]); /* These buffers should all be the same size */ -ACPI_EXTERN char acpi_gbl_db_line_buf[ACPI_DB_LINE_BUFFER_SIZE]; -ACPI_EXTERN char acpi_gbl_db_parsed_buf[ACPI_DB_LINE_BUFFER_SIZE]; -ACPI_EXTERN char acpi_gbl_db_scope_buf[ACPI_DB_LINE_BUFFER_SIZE]; -ACPI_EXTERN char acpi_gbl_db_debug_filename[ACPI_DB_LINE_BUFFER_SIZE]; +ACPI_GLOBAL(char, acpi_gbl_db_line_buf[ACPI_DB_LINE_BUFFER_SIZE]); +ACPI_GLOBAL(char, acpi_gbl_db_parsed_buf[ACPI_DB_LINE_BUFFER_SIZE]); +ACPI_GLOBAL(char, acpi_gbl_db_scope_buf[ACPI_DB_LINE_BUFFER_SIZE]); +ACPI_GLOBAL(char, acpi_gbl_db_debug_filename[ACPI_DB_LINE_BUFFER_SIZE]); /* * Statistic globals */ -ACPI_EXTERN u16 acpi_gbl_obj_type_count[ACPI_TYPE_NS_NODE_MAX + 1]; -ACPI_EXTERN u16 acpi_gbl_node_type_count[ACPI_TYPE_NS_NODE_MAX + 1]; -ACPI_EXTERN u16 acpi_gbl_obj_type_count_misc; -ACPI_EXTERN u16 acpi_gbl_node_type_count_misc; -ACPI_EXTERN u32 acpi_gbl_num_nodes; -ACPI_EXTERN u32 acpi_gbl_num_objects; - -ACPI_EXTERN u32 acpi_gbl_size_of_parse_tree; -ACPI_EXTERN u32 acpi_gbl_size_of_method_trees; -ACPI_EXTERN u32 acpi_gbl_size_of_node_entries; -ACPI_EXTERN u32 acpi_gbl_size_of_acpi_objects; +ACPI_GLOBAL(u16, acpi_gbl_obj_type_count[ACPI_TYPE_NS_NODE_MAX + 1]); +ACPI_GLOBAL(u16, acpi_gbl_node_type_count[ACPI_TYPE_NS_NODE_MAX + 1]); +ACPI_GLOBAL(u16, acpi_gbl_obj_type_count_misc); +ACPI_GLOBAL(u16, acpi_gbl_node_type_count_misc); +ACPI_GLOBAL(u32, acpi_gbl_num_nodes); +ACPI_GLOBAL(u32, acpi_gbl_num_objects); + +ACPI_GLOBAL(u32, acpi_gbl_size_of_parse_tree); +ACPI_GLOBAL(u32, acpi_gbl_size_of_method_trees); +ACPI_GLOBAL(u32, acpi_gbl_size_of_node_entries); +ACPI_GLOBAL(u32, acpi_gbl_size_of_acpi_objects); #endif /* ACPI_DEBUGGER */ @@ -510,7 +499,7 @@ ACPI_EXTERN u32 acpi_gbl_size_of_acpi_objects; #ifdef ACPI_APPLICATION -ACPI_FILE ACPI_INIT_GLOBAL(acpi_gbl_debug_file, NULL); +ACPI_INIT_GLOBAL(ACPI_FILE, acpi_gbl_debug_file, NULL); #endif /* ACPI_APPLICATION */ diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 21785da2318e..f3abeae9d2f8 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -55,31 +55,27 @@ ACPI_MODULE_NAME("utglobal") * Static global variable initialization. * ******************************************************************************/ -/* - * We want the debug switches statically initialized so they - * are already set when the debugger is entered. - */ -/* Debug switch - level and trace mask */ +/* Debug output control masks */ u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT; -/* Debug switch - layer (component) mask */ - u32 acpi_dbg_layer = 0; -u32 acpi_gbl_nesting_level = 0; -/* Debugger globals */ +/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */ -u8 acpi_gbl_db_terminate_threads = FALSE; -u8 acpi_gbl_abort_method = FALSE; -u8 acpi_gbl_method_executing = FALSE; +struct acpi_table_fadt acpi_gbl_FADT; +u32 acpi_gbl_trace_flags; +acpi_name acpi_gbl_trace_method_name; +u8 acpi_gbl_system_awake_and_running; +u32 acpi_current_gpe_count; -/* System flags */ - -u32 acpi_gbl_startup_flags = 0; - -/* System starts uninitialized */ +/* + * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning + * that the ACPI hardware is no longer required. A flag in the FADT indicates + * a reduced HW machine, and that flag is duplicated here for convenience. + */ +u8 acpi_gbl_reduced_hardware; -u8 acpi_gbl_shutdown = TRUE; +/* Various state name strings */ const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = { "\\_S0_", @@ -335,7 +331,6 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_DSDT = NULL; acpi_gbl_cm_single_step = FALSE; - acpi_gbl_db_terminate_threads = FALSE; acpi_gbl_shutdown = FALSE; acpi_gbl_ns_lookup_count = 0; acpi_gbl_ps_find_count = 0; @@ -382,6 +377,10 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_disable_mem_tracking = FALSE; #endif +#ifdef ACPI_DEBUGGER + acpi_gbl_db_terminate_threads = FALSE; +#endif + return_ACPI_STATUS(AE_OK); } -- cgit v1.2.3 From 3ef27bd002f13bc1bfa0a442ffbfcd9a70b48bc6 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:33:08 +0800 Subject: ACPICA: Update for _PRP predefined name. Allow objects of type "reference" in the second subpackage element. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acpredef.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index c99bc04a5efe..08c359f8a666 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -704,7 +704,7 @@ const union acpi_predefined_info acpi_gbl_predefined_methods[] = { METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each: 1 Str, 1 Int/Str/Pkg */ PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_STRING, 1, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | - ACPI_RTYPE_PACKAGE, 1, 0), + ACPI_RTYPE_PACKAGE | ACPI_RTYPE_REFERENCE, 1, 0), {{"_PRS", METHOD_0ARGS, METHOD_RETURNS(ACPI_RTYPE_BUFFER)}}, -- cgit v1.2.3 From 73581c022d2e4484734f226284bda817b2937dfe Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:33:18 +0800 Subject: ACPICA: Add text: ACPICA policy for new _OSI strings. No functional change. Adds further information about why new _OSI strings should be adopted by all hosts as soon as possible. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/utosi.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c index 1e5525e87d34..685766fc6ca8 100644 --- a/drivers/acpi/acpica/utosi.c +++ b/drivers/acpi/acpica/utosi.c @@ -47,6 +47,31 @@ #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utosi") +/****************************************************************************** + * + * ACPICA policy for new _OSI strings: + * + * It is the stated policy of ACPICA that new _OSI strings will be integrated + * into this module as soon as possible after they are defined. It is strongly + * recommended that all ACPICA hosts mirror this policy and integrate any + * changes to this module as soon as possible. There are several historical + * reasons behind this policy: + * + * 1) New BIOSs tend to test only the case where the host responds TRUE to + * the latest version of Windows, which would respond to the latest/newest + * _OSI string. Not responding TRUE to the latest version of Windows will + * risk executing untested code paths throughout the DSDT and SSDTs. + * + * 2) If a new _OSI string is recognized only after a significant delay, this + * has the potential to cause problems on existing working machines because + * of the possibility that a new and different path through the ASL code + * will be executed. + * + * 3) New _OSI strings are tending to come out about once per year. A delay + * in recognizing a new string for a significant amount of time risks the + * release of another string which only compounds the initial problem. + * + *****************************************************************************/ /* * Strings supported by the _OSI predefined control method (which is * implemented internally within this module.) -- cgit v1.2.3 From a487af33a4f0f5ced860ab18c4a740b97b435a3e Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:33:32 +0800 Subject: ACPICA: Debugger: Add missing objects; Traverse linked lists This change adds support for two missing objects, the "extra" and "data" secondary objects, as well as adding support to traverse and display linked lists related to ACPICA objects. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acinterp.h | 4 + drivers/acpi/acpica/exdump.c | 229 +++++++++++++++++++++++++++++++++++------ 2 files changed, 199 insertions(+), 34 deletions(-) diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h index 277f4d03c080..fc222d69e2ab 100644 --- a/drivers/acpi/acpica/acinterp.h +++ b/drivers/acpi/acpica/acinterp.h @@ -89,6 +89,10 @@ typedef const struct acpi_exdump_info { #define ACPI_EXD_PACKAGE 11 #define ACPI_EXD_FIELD 12 #define ACPI_EXD_REFERENCE 13 +#define ACPI_EXD_LIST 14 /* Operand object list */ +#define ACPI_EXD_HDLR_LIST 15 /* Address Handler list */ +#define ACPI_EXD_RGN_LIST 16 /* Region list */ +#define ACPI_EXD_NODE 17 /* Namespace Node */ /* restore default alignment */ diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c index c3e419c23d17..973fdae00f94 100644 --- a/drivers/acpi/acpica/exdump.c +++ b/drivers/acpi/acpica/exdump.c @@ -94,12 +94,13 @@ static struct acpi_exdump_info acpi_ex_dump_buffer[5] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_buffer), NULL}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(buffer.length), "Length"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(buffer.pointer), "Pointer"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(buffer.node), "Parent Node"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(buffer.node), "Parent Node"}, {ACPI_EXD_BUFFER, 0, NULL} }; -static struct acpi_exdump_info acpi_ex_dump_package[5] = { +static struct acpi_exdump_info acpi_ex_dump_package[6] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_package), NULL}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(package.node), "Parent Node"}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(package.flags), "Flags"}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(package.count), "Elements"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(package.elements), "Element List"}, @@ -108,11 +109,11 @@ static struct acpi_exdump_info acpi_ex_dump_package[5] = { static struct acpi_exdump_info acpi_ex_dump_device[4] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_device), NULL}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.handler), "Handler"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.notify_list[0]), "System Notify"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.notify_list[1]), - "Device Notify"} + "Device Notify"}, + {ACPI_EXD_HDLR_LIST, ACPI_EXD_OFFSET(device.handler), "Handler"} }; static struct acpi_exdump_info acpi_ex_dump_event[2] = { @@ -142,17 +143,18 @@ static struct acpi_exdump_info acpi_ex_dump_mutex[5] = { {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.os_mutex), "OsMutex"} }; -static struct acpi_exdump_info acpi_ex_dump_region[7] = { +static struct acpi_exdump_info acpi_ex_dump_region[8] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_region), NULL}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(region.space_id), "Space Id"}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(region.flags), "Flags"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(region.node), "Parent Node"}, {ACPI_EXD_ADDRESS, ACPI_EXD_OFFSET(region.address), "Address"}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(region.length), "Length"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(region.handler), "Handler"}, + {ACPI_EXD_HDLR_LIST, ACPI_EXD_OFFSET(region.handler), "Handler"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(region.next), "Next"} }; -static struct acpi_exdump_info acpi_ex_dump_power[5] = { +static struct acpi_exdump_info acpi_ex_dump_power[6] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_power), NULL}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(power_resource.system_level), "System Level"}, @@ -161,7 +163,8 @@ static struct acpi_exdump_info acpi_ex_dump_power[5] = { {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.notify_list[0]), "System Notify"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.notify_list[1]), - "Device Notify"} + "Device Notify"}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.handler), "Handler"} }; static struct acpi_exdump_info acpi_ex_dump_processor[7] = { @@ -225,7 +228,7 @@ static struct acpi_exdump_info acpi_ex_dump_reference[8] = { {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(reference.target_type), "Target Type"}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(reference.value), "Value"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.object), "Object Desc"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.node), "Node"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(reference.node), "Node"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.where), "Where"}, {ACPI_EXD_REFERENCE, 0, NULL} }; @@ -234,16 +237,16 @@ static struct acpi_exdump_info acpi_ex_dump_address_handler[6] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_address_handler), NULL}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(address_space.space_id), "Space Id"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(address_space.next), "Next"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(address_space.region_list), + {ACPI_EXD_HDLR_LIST, ACPI_EXD_OFFSET(address_space.next), "Next"}, + {ACPI_EXD_RGN_LIST, ACPI_EXD_OFFSET(address_space.region_list), "Region List"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(address_space.node), "Node"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(address_space.node), "Node"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(address_space.context), "Context"} }; static struct acpi_exdump_info acpi_ex_dump_notify[7] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_notify), NULL}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.node), "Node"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(notify.node), "Node"}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(notify.handler_type), "Handler Type"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.handler), "Handler"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.context), "Context"}, @@ -252,14 +255,31 @@ static struct acpi_exdump_info acpi_ex_dump_notify[7] = { {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.next[1]), "Next Device Notify"} }; +static struct acpi_exdump_info acpi_ex_dump_extra[6] = { + {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_extra), NULL}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(extra.method_REG), "_REG Method"}, + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(extra.scope_node), "Scope Node"}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(extra.region_context), + "Region Context"}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(extra.aml_start), "Aml Start"}, + {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(extra.aml_length), "Aml Length"} +}; + +static struct acpi_exdump_info acpi_ex_dump_data[3] = { + {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_data), NULL}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(data.handler), "Handler"}, + {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(data.pointer), "Raw Data"} +}; + /* Miscellaneous tables */ -static struct acpi_exdump_info acpi_ex_dump_common[4] = { +static struct acpi_exdump_info acpi_ex_dump_common[5] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_common), NULL}, {ACPI_EXD_TYPE, 0, NULL}, {ACPI_EXD_UINT16, ACPI_EXD_OFFSET(common.reference_count), "Reference Count"}, - {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(common.flags), "Flags"} + {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(common.flags), "Flags"}, + {ACPI_EXD_LIST, ACPI_EXD_OFFSET(common.next_object), "Object List"} }; static struct acpi_exdump_info acpi_ex_dump_field_common[7] = { @@ -274,15 +294,17 @@ static struct acpi_exdump_info acpi_ex_dump_field_common[7] = { "Field Bit Offset"}, {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(common_field.base_byte_offset), "Base Byte Offset"}, - {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(common_field.node), "Parent Node"} + {ACPI_EXD_NODE, ACPI_EXD_OFFSET(common_field.node), "Parent Node"} }; -static struct acpi_exdump_info acpi_ex_dump_node[5] = { +static struct acpi_exdump_info acpi_ex_dump_node[7] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_node), NULL}, {ACPI_EXD_UINT8, ACPI_EXD_NSOFFSET(flags), "Flags"}, {ACPI_EXD_UINT8, ACPI_EXD_NSOFFSET(owner_id), "Owner Id"}, - {ACPI_EXD_POINTER, ACPI_EXD_NSOFFSET(child), "Child List"}, - {ACPI_EXD_POINTER, ACPI_EXD_NSOFFSET(peer), "Next Peer"} + {ACPI_EXD_LIST, ACPI_EXD_NSOFFSET(object), "Object List"}, + {ACPI_EXD_NODE, ACPI_EXD_NSOFFSET(parent), "Parent"}, + {ACPI_EXD_NODE, ACPI_EXD_NSOFFSET(child), "Child"}, + {ACPI_EXD_NODE, ACPI_EXD_NSOFFSET(peer), "Peer"} }; /* Dispatch table, indexed by object type */ @@ -315,7 +337,9 @@ static struct acpi_exdump_info *acpi_ex_dump_info[] = { acpi_ex_dump_address_handler, NULL, NULL, - NULL + NULL, + acpi_ex_dump_extra, + acpi_ex_dump_data }; /******************************************************************************* @@ -340,6 +364,10 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc, char *name; const char *reference_name; u8 count; + union acpi_operand_object *start; + union acpi_operand_object *data = NULL; + union acpi_operand_object *next; + struct acpi_namespace_node *node; if (!info) { acpi_os_printf @@ -363,9 +391,9 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc, case ACPI_EXD_TYPE: - acpi_ex_out_string("Type", - acpi_ut_get_object_type_name - (obj_desc)); + acpi_os_printf("%20s : %2.2X [%s]\n", "Type", + obj_desc->common.type, + acpi_ut_get_object_type_name(obj_desc)); break; case ACPI_EXD_UINT8: @@ -433,6 +461,121 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc, acpi_ex_dump_reference_obj(obj_desc); break; + case ACPI_EXD_LIST: + + start = *ACPI_CAST_PTR(void *, target); + next = start; + + acpi_os_printf("%20s : %p", name, next); + if (next) { + acpi_os_printf("(%s %2.2X)", + acpi_ut_get_object_type_name + (next), next->common.type); + + while (next->common.next_object) { + if ((next->common.type == + ACPI_TYPE_LOCAL_DATA) && !data) { + data = next; + } + + next = next->common.next_object; + acpi_os_printf("->%p(%s %2.2X)", next, + acpi_ut_get_object_type_name + (next), + next->common.type); + + if ((next == start) || (next == data)) { + acpi_os_printf + ("\n**** Error: Object list appears to be circular linked"); + break; + } + } + } + + acpi_os_printf("\n", next); + break; + + case ACPI_EXD_HDLR_LIST: + + start = *ACPI_CAST_PTR(void *, target); + next = start; + + acpi_os_printf("%20s : %p", name, next); + if (next) { + acpi_os_printf("(%s %2.2X)", + acpi_ut_get_object_type_name + (next), next->common.type); + + while (next->address_space.next) { + if ((next->common.type == + ACPI_TYPE_LOCAL_DATA) && !data) { + data = next; + } + + next = next->address_space.next; + acpi_os_printf("->%p(%s %2.2X)", next, + acpi_ut_get_object_type_name + (next), + next->common.type); + + if ((next == start) || (next == data)) { + acpi_os_printf + ("\n**** Error: Handler list appears to be circular linked"); + break; + } + } + } + + acpi_os_printf("\n", next); + break; + + case ACPI_EXD_RGN_LIST: + + start = *ACPI_CAST_PTR(void *, target); + next = start; + + acpi_os_printf("%20s : %p", name, next); + if (next) { + acpi_os_printf("(%s %2.2X)", + acpi_ut_get_object_type_name + (next), next->common.type); + + while (next->region.next) { + if ((next->common.type == + ACPI_TYPE_LOCAL_DATA) && !data) { + data = next; + } + + next = next->region.next; + acpi_os_printf("->%p(%s %2.2X)", next, + acpi_ut_get_object_type_name + (next), + next->common.type); + + if ((next == start) || (next == data)) { + acpi_os_printf + ("\n**** Error: Region list appears to be circular linked"); + break; + } + } + } + + acpi_os_printf("\n", next); + break; + + case ACPI_EXD_NODE: + + node = + *ACPI_CAST_PTR(struct acpi_namespace_node *, + target); + + acpi_os_printf("%20s : %p", name, node); + if (node) { + acpi_os_printf(" [%4.4s]", node->name.ascii); + } + acpi_os_printf("\n"); + break; + default: acpi_os_printf("**** Invalid table opcode [%X] ****\n", @@ -821,10 +964,8 @@ void acpi_ex_dump_namespace_node(struct acpi_namespace_node *node, u32 flags) } acpi_os_printf("%20s : %4.4s\n", "Name", acpi_ut_get_node_name(node)); - acpi_ex_out_string("Type", acpi_ut_get_type_name(node->type)); - acpi_ex_out_pointer("Attached Object", - acpi_ns_get_attached_object(node)); - acpi_ex_out_pointer("Parent", node->parent); + acpi_os_printf("%20s : %2.2X [%s]\n", "Type", + node->type, acpi_ut_get_type_name(node->type)); acpi_ex_dump_object(ACPI_CAST_PTR(union acpi_operand_object, node), acpi_ex_dump_node); @@ -1017,22 +1158,26 @@ acpi_ex_dump_object_descriptor(union acpi_operand_object *obj_desc, u32 flags) ((struct acpi_namespace_node *)obj_desc)-> object); - acpi_ex_dump_object_descriptor(((struct acpi_namespace_node *) - obj_desc)->object, flags); - return_VOID; + obj_desc = ((struct acpi_namespace_node *)obj_desc)->object; + goto dump_object; } if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) { - acpi_os_printf - ("ExDumpObjectDescriptor: %p is not an ACPI operand object: [%s]\n", - obj_desc, acpi_ut_get_descriptor_name(obj_desc)); + acpi_os_printf("%p is not an ACPI operand object: [%s]\n", + obj_desc, acpi_ut_get_descriptor_name(obj_desc)); return_VOID; } - if (obj_desc->common.type > ACPI_TYPE_NS_NODE_MAX) { + /* Validate the object type */ + + if (obj_desc->common.type > ACPI_TYPE_LOCAL_MAX) { + acpi_os_printf("Not a known object type: %2.2X\n", + obj_desc->common.type); return_VOID; } +dump_object: + /* Common Fields */ acpi_ex_dump_object(obj_desc, acpi_ex_dump_common); @@ -1040,6 +1185,22 @@ acpi_ex_dump_object_descriptor(union acpi_operand_object *obj_desc, u32 flags) /* Object-specific fields */ acpi_ex_dump_object(obj_desc, acpi_ex_dump_info[obj_desc->common.type]); + + if (obj_desc->common.type == ACPI_TYPE_REGION) { + obj_desc = obj_desc->common.next_object; + if (obj_desc->common.type > ACPI_TYPE_LOCAL_MAX) { + acpi_os_printf + ("Secondary object is not a known object type: %2.2X\n", + obj_desc->common.type); + + return_VOID; + } + + acpi_os_printf("\nExtra attached Object (%p):\n", obj_desc); + acpi_ex_dump_object(obj_desc, + acpi_ex_dump_info[obj_desc->common.type]); + } + return_VOID; } -- cgit v1.2.3 From f953529f3b659a72c0982c2cf195158db96361f1 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:33:47 +0800 Subject: ACPICA: Prevent infinite loops when traversing corrupted lists. This change hardens the ACPICA code to detect circular linked object lists and prevent an infinite loop if such corruption exists. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evregion.c | 11 +++++++++++ drivers/acpi/acpica/nsobject.c | 10 ++++++++-- drivers/acpi/acpica/utdelete.c | 15 +++++++++++++-- 3 files changed, 32 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index e31049b3e9d4..9957297d1580 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -314,6 +314,7 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj, { union acpi_operand_object *handler_obj; union acpi_operand_object *obj_desc; + union acpi_operand_object *start_desc; union acpi_operand_object **last_obj_ptr; acpi_adr_space_setup region_setup; void **region_context; @@ -341,6 +342,7 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj, /* Find this region in the handler's list */ obj_desc = handler_obj->address_space.region_list; + start_desc = obj_desc; last_obj_ptr = &handler_obj->address_space.region_list; while (obj_desc) { @@ -438,6 +440,15 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj, last_obj_ptr = &obj_desc->region.next; obj_desc = obj_desc->region.next; + + /* Prevent infinite loop if list is corrupted */ + + if (obj_desc == start_desc) { + ACPI_ERROR((AE_INFO, + "Circular handler list in region object %p", + region_obj)); + return_VOID; + } } /* If we get here, the region was not in the handler's region list */ diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c index 32845b105053..fe54a8c73b8c 100644 --- a/drivers/acpi/acpica/nsobject.c +++ b/drivers/acpi/acpica/nsobject.c @@ -222,13 +222,19 @@ void acpi_ns_detach_object(struct acpi_namespace_node *node) } } - /* Clear the entry in all cases */ + /* Clear the Node entry in all cases */ node->object = NULL; if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) == ACPI_DESC_TYPE_OPERAND) { + + /* Unlink object from front of possible object list */ + node->object = obj_desc->common.next_object; + + /* Handle possible 2-descriptor object */ + if (node->object && - ((node->object)->common.type != ACPI_TYPE_LOCAL_DATA)) { + (node->object->common.type != ACPI_TYPE_LOCAL_DATA)) { node->object = node->object->common.next_object; } } diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c index ed4cb8683310..a3516de213fa 100644 --- a/drivers/acpi/acpica/utdelete.c +++ b/drivers/acpi/acpica/utdelete.c @@ -75,6 +75,7 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) union acpi_operand_object *handler_desc; union acpi_operand_object *second_desc; union acpi_operand_object *next_desc; + union acpi_operand_object *start_desc; union acpi_operand_object **last_obj_ptr; ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object); @@ -235,10 +236,11 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) if (handler_desc) { next_desc = handler_desc->address_space.region_list; + start_desc = next_desc; last_obj_ptr = &handler_desc->address_space.region_list; - /* Remove the region object from the handler's list */ + /* Remove the region object from the handler list */ while (next_desc) { if (next_desc == object) { @@ -247,10 +249,19 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) break; } - /* Walk the linked list of handler */ + /* Walk the linked list of handlers */ last_obj_ptr = &next_desc->region.next; next_desc = next_desc->region.next; + + /* Prevent infinite loop if list is corrupted */ + + if (next_desc == start_desc) { + ACPI_ERROR((AE_INFO, + "Circular region list in address handler object %p", + handler_desc)); + return_VOID; + } } if (handler_desc->address_space.handler_flags & -- cgit v1.2.3 From d2716578e439a5a693d0817e8ab89802b33b4ded Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 26 Feb 2014 10:33:55 +0800 Subject: ACPICA: Update version to 20140214. Version 20140214. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index efa767ffe904..943c6d7856ca 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -46,7 +46,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20140114 +#define ACPI_CA_VERSION 0x20140214 #include #include -- cgit v1.2.3 From 6e596084833b95662dfe90e1f30d83ccbd64575c Mon Sep 17 00:00:00 2001 From: Robert Moore Date: Wed, 5 Mar 2014 14:12:01 +0800 Subject: ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)." This reverts commit aae576e5faefa8ba70647efa320d4747b6375f1e. Push and Pop are not portable "enough", and caused problems for some ACPICA customers. Signed-off-by: Robert Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acdebug.h | 4 ---- drivers/acpi/acpica/acdispat.h | 4 ---- drivers/acpi/acpica/acevents.h | 3 --- drivers/acpi/acpica/acglobal.h | 4 ---- drivers/acpi/acpica/achware.h | 4 ---- drivers/acpi/acpica/acinterp.h | 4 ---- drivers/acpi/acpica/aclocal.h | 4 ---- drivers/acpi/acpica/acmacros.h | 4 ---- drivers/acpi/acpica/acnamesp.h | 4 ---- drivers/acpi/acpica/acobject.h | 4 +--- drivers/acpi/acpica/acparser.h | 4 ---- drivers/acpi/acpica/acpredef.h | 4 ---- drivers/acpi/acpica/acresrc.h | 4 ---- drivers/acpi/acpica/acstruct.h | 4 ---- drivers/acpi/acpica/actables.h | 4 ---- drivers/acpi/acpica/acutils.h | 4 ---- drivers/acpi/acpica/amlcode.h | 4 ---- drivers/acpi/acpica/amlresrc.h | 4 ---- include/acpi/acbuffer.h | 4 ---- include/acpi/acconfig.h | 4 ---- include/acpi/acexcep.h | 4 ---- include/acpi/acoutput.h | 4 ---- include/acpi/acpiosxf.h | 4 ---- include/acpi/acpixf.h | 4 ---- include/acpi/acrestyp.h | 4 ---- include/acpi/actbl.h | 4 ---- include/acpi/actbl1.h | 6 +++--- include/acpi/actbl2.h | 6 +++--- include/acpi/actbl3.h | 6 +++--- include/acpi/actypes.h | 4 ---- 30 files changed, 10 insertions(+), 115 deletions(-) diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index e9ab514a96c8..68a91eb0fa48 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -44,8 +44,6 @@ #ifndef __ACDEBUG_H__ #define __ACDEBUG_H__ -#pragma pack(push) /* Set default struct packing */ - #define ACPI_DEBUG_BUFFER_SIZE 0x4000 /* 16K buffer for return objects */ struct acpi_db_command_info { @@ -284,6 +282,4 @@ struct acpi_namespace_node *acpi_db_local_ns_lookup(char *name); void acpi_db_uint32_to_hex_string(u32 value, char *buffer); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACDEBUG_H__ */ diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h index 53b6dd679ffa..5b472c43c31d 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -44,8 +44,6 @@ #ifndef _ACDISPAT_H_ #define _ACDISPAT_H_ -#pragma pack(push) /* Set default struct packing */ - #define NAMEOF_LOCAL_NTE "__L0" #define NAMEOF_ARG_NTE "__A0" @@ -353,6 +351,4 @@ acpi_status acpi_ds_result_push(union acpi_operand_object *object, struct acpi_walk_state *walk_state); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* _ACDISPAT_H_ */ diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 75f25eda3a6a..68ec61fff188 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -44,8 +44,6 @@ #ifndef __ACEVENTS_H__ #define __ACEVENTS_H__ -#pragma pack(push) /* Set default struct packing */ - /* * evevent */ @@ -253,5 +251,4 @@ u32 acpi_ev_install_sci_handler(void); acpi_status acpi_ev_remove_all_sci_handlers(void); ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_ev_terminate(void)) -#pragma pack(pop) /* Restore original struct packing */ #endif /* __ACEVENTS_H__ */ diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 7cc7ffef04d2..8f40bb972ae3 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -44,8 +44,6 @@ #ifndef __ACGLOBAL_H__ #define __ACGLOBAL_H__ -#pragma pack(push) /* Set default struct packing */ - /* * Ensure that the globals are actually defined and initialized only once. * @@ -511,6 +509,4 @@ ACPI_INIT_GLOBAL(ACPI_FILE, acpi_gbl_debug_file, NULL); extern const struct ah_predefined_name asl_predefined_info[]; -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACGLOBAL_H__ */ diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 4a0e63457881..2ad2351a9833 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -44,8 +44,6 @@ #ifndef __ACHWARE_H__ #define __ACHWARE_H__ -#pragma pack(push) /* Set default struct packing */ - /* Values for the _SST predefined method */ #define ACPI_SST_INDICATOR_OFF 0 @@ -149,6 +147,4 @@ acpi_status acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id, acpi_handle root_pci_device, acpi_handle pci_region); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACHWARE_H__ */ diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h index fc222d69e2ab..c54267748be5 100644 --- a/drivers/acpi/acpica/acinterp.h +++ b/drivers/acpi/acpica/acinterp.h @@ -44,8 +44,6 @@ #ifndef __ACINTERP_H__ #define __ACINTERP_H__ -#pragma pack(push) /* Set default struct packing */ - #define ACPI_WALK_OPERANDS (&(walk_state->operands [walk_state->num_operands -1])) /* Macros for tables used for debug output */ @@ -537,6 +535,4 @@ acpi_ex_data_table_space_handler(u32 function, u64 *value, void *handler_context, void *region_context); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __INTERP_H__ */ diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index fee53b50399b..52a21dafb540 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -44,8 +44,6 @@ #ifndef __ACLOCAL_H__ #define __ACLOCAL_H__ -#pragma pack(push) /* Set default struct packing */ - /* acpisrc:struct_defs -- for acpisrc conversion */ #define ACPI_SERIALIZED 0xFF @@ -1149,6 +1147,4 @@ struct ah_predefined_name { #endif }; -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACLOCAL_H__ */ diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 9b0ce226bf5d..4bceb11c7380 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -44,8 +44,6 @@ #ifndef __ACMACROS_H__ #define __ACMACROS_H__ -#pragma pack(push) /* Set default struct packing */ - /* * Extract data using a pointer. Any more than a byte and we * get into potential aligment issues -- see the STORE macros below. @@ -429,6 +427,4 @@ #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7')) -#pragma pack(pop) /* Restore original struct packing */ - #endif /* ACMACROS_H */ diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index 751083dd7793..ee1c040f321c 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -44,8 +44,6 @@ #ifndef __ACNAMESP_H__ #define __ACNAMESP_H__ -#pragma pack(push) /* Set default struct packing */ - /* To search the entire name space, pass this as search_base */ #define ACPI_NS_ALL ((acpi_handle)0) @@ -406,6 +404,4 @@ struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle); void acpi_ns_terminate(void); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACNAMESP_H__ */ diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index 7ce7e9f1a040..1a4d61805ebc 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -44,8 +44,6 @@ #ifndef _ACOBJECT_H #define _ACOBJECT_H -#pragma pack(push) /* Set default struct packing */ - /* acpisrc:struct_defs -- for acpisrc conversion */ /* @@ -458,6 +456,6 @@ union acpi_descriptor { union acpi_parse_object op; }; -#pragma pack(pop) /* Restore original struct packing */ +#pragma pack() #endif /* _ACOBJECT_H */ diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h index 3d828be9dc20..6168b85463ed 100644 --- a/drivers/acpi/acpica/acparser.h +++ b/drivers/acpi/acpica/acparser.h @@ -44,8 +44,6 @@ #ifndef __ACPARSER_H__ #define __ACPARSER_H__ -#pragma pack(push) /* Set default struct packing */ - #define OP_HAS_RETURN_VALUE 1 /* Variable number of arguments. This field must be 32 bits */ @@ -253,6 +251,4 @@ acpi_ps_sprint_op(char *buffer_start, void acpi_ps_show(union acpi_parse_object *op); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACPARSER_H__ */ diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index 08c359f8a666..a48d713e9599 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -44,8 +44,6 @@ #ifndef __ACPREDEF_H__ #define __ACPREDEF_H__ -#pragma pack(push) /* Set default struct packing */ - /****************************************************************************** * * Return Package types @@ -1088,6 +1086,4 @@ static const union acpi_predefined_info acpi_gbl_scope_names[] = { extern const union acpi_predefined_info acpi_gbl_resource_names[]; #endif -#pragma pack(pop) /* Restore original struct packing */ - #endif diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h index be16da2d9f3d..4b008e8884a1 100644 --- a/drivers/acpi/acpica/acresrc.h +++ b/drivers/acpi/acpica/acresrc.h @@ -48,8 +48,6 @@ #include "amlresrc.h" -#pragma pack(push) /* Set default struct packing */ - /* * If possible, pack the following structures to byte alignment, since we * don't care about performance for debug output. Two cases where we cannot @@ -380,6 +378,4 @@ extern struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[]; extern struct acpi_rsdump_info acpi_rs_dump_general_flags[]; #endif -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACRESRC_H__ */ diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h index 5a3fa0ddc1bc..5d2989a1b68c 100644 --- a/drivers/acpi/acpica/acstruct.h +++ b/drivers/acpi/acpica/acstruct.h @@ -44,8 +44,6 @@ #ifndef __ACSTRUCT_H__ #define __ACSTRUCT_H__ -#pragma pack(push) /* Set default struct packing */ - /* acpisrc:struct_defs -- for acpisrc conversion */ /***************************************************************************** @@ -243,6 +241,4 @@ struct acpi_walk_info { #define ACPI_DISPLAY_SHORT (u8) 2 -#pragma pack(pop) /* Restore original struct packing */ - #endif diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index 9b0f9846e014..5fa4b2027697 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -44,8 +44,6 @@ #ifndef __ACTABLES_H__ #define __ACTABLES_H__ -#pragma pack(push) /* Set default struct packing */ - acpi_status acpi_allocate_root_table(u32 initial_table_count); /* @@ -131,6 +129,4 @@ acpi_tb_install_table(acpi_physical_address address, acpi_status acpi_tb_parse_root_table(acpi_physical_address rsdp_address); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACTABLES_H__ */ diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index df970ffb7356..ceeec0b7ccb1 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -44,8 +44,6 @@ #ifndef _ACUTILS_H #define _ACUTILS_H -#pragma pack(push) /* Set default struct packing */ - extern const u8 acpi_gbl_resource_aml_sizes[]; extern const u8 acpi_gbl_resource_aml_serial_bus_sizes[]; @@ -739,6 +737,4 @@ acpi_ut_method_error(const char *module_name, struct acpi_namespace_node *node, const char *path, acpi_status lookup_status); -#pragma pack(pop) /* Restore original struct packing */ - #endif /* _ACUTILS_H */ diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index 2db27109d70e..5908ccec6aea 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -46,8 +46,6 @@ #ifndef __AMLCODE_H__ #define __AMLCODE_H__ -#pragma pack(push) /* Set default struct packing */ - /* primary opcodes */ #define AML_NULL_CHAR (u16) 0x00 @@ -486,6 +484,4 @@ typedef enum { #define AML_METHOD_SERIALIZED 0x08 #define AML_METHOD_SYNC_LEVEL 0xF0 -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __AMLCODE_H__ */ diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h index 334fbeee80d2..f3f834408441 100644 --- a/drivers/acpi/acpica/amlresrc.h +++ b/drivers/acpi/acpica/amlresrc.h @@ -46,8 +46,6 @@ #ifndef __AMLRESRC_H #define __AMLRESRC_H -#pragma pack(push) /* Set default struct packing */ - /* * Resource descriptor tags, as defined in the ACPI specification. * Used to symbolically reference fields within a descriptor. @@ -451,6 +449,4 @@ union aml_resource { u8 byte_item; }; -#pragma pack(pop) /* Restore original struct packing */ - #endif diff --git a/include/acpi/acbuffer.h b/include/acpi/acbuffer.h index 960c76fb69a1..88cb477524a6 100644 --- a/include/acpi/acbuffer.h +++ b/include/acpi/acbuffer.h @@ -44,8 +44,6 @@ #ifndef __ACBUFFER_H__ #define __ACBUFFER_H__ -#pragma pack(push) /* Set default struct packing */ - /* * Contains buffer structures for these predefined names: * _FDE, _GRT, _GTM, _PLD, _SRT @@ -234,6 +232,4 @@ struct acpi_pld_info { #define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK) #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */ -#pragma pack(pop) /* Restore original struct packing */ - #endif /* ACBUFFER_H */ diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h index d8a0ba8f88a5..932a60d6ed82 100644 --- a/include/acpi/acconfig.h +++ b/include/acpi/acconfig.h @@ -44,8 +44,6 @@ #ifndef _ACCONFIG_H #define _ACCONFIG_H -#pragma pack(push) /* Set default struct packing */ - /****************************************************************************** * * Configuration options @@ -231,6 +229,4 @@ #define ACPI_DEBUGGER_COMMAND_PROMPT '-' #define ACPI_DEBUGGER_EXECUTE_PROMPT '%' -#pragma pack(pop) /* Restore original struct packing */ - #endif /* _ACCONFIG_H */ diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h index f0bcb96b1598..8b06e4c1dd5d 100644 --- a/include/acpi/acexcep.h +++ b/include/acpi/acexcep.h @@ -44,8 +44,6 @@ #ifndef __ACEXCEP_H__ #define __ACEXCEP_H__ -#pragma pack(push) /* Set default struct packing */ - /* This module contains all possible exception codes for acpi_status */ /* @@ -379,6 +377,4 @@ static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = { #endif /* EXCEPTION_TABLE */ -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACEXCEP_H__ */ diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h index 247636fb51a5..1baae6edda89 100644 --- a/include/acpi/acoutput.h +++ b/include/acpi/acoutput.h @@ -44,8 +44,6 @@ #ifndef __ACOUTPUT_H__ #define __ACOUTPUT_H__ -#pragma pack(push) /* Set default struct packing */ - /* * Debug levels and component IDs. These are used to control the * granularity of the output of the ACPI_DEBUG_PRINT macro -- on a @@ -458,6 +456,4 @@ #endif /* ACPI_DEBUG_OUTPUT */ -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACOUTPUT_H__ */ diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h index a4a2cd39aea9..f6f5f8af2112 100644 --- a/include/acpi/acpiosxf.h +++ b/include/acpi/acpiosxf.h @@ -49,8 +49,6 @@ #include #include -#pragma pack(push) /* Set default struct packing */ - /* Types for acpi_os_execute */ typedef enum { @@ -401,6 +399,4 @@ char *acpi_os_get_next_filename(void *dir_handle); void acpi_os_close_directory(void *dir_handle); #endif -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACPIOSXF_H__ */ diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 943c6d7856ca..e04f0114283f 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -55,8 +55,6 @@ extern u8 acpi_gbl_permanent_mmap; -#pragma pack(push) /* Set default struct packing */ - /* * Globals that are publically available */ @@ -582,6 +580,4 @@ acpi_debug_print_raw(u32 requested_debug_level, u32 component_id, const char *format, ...); #endif -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACXFACE_H__ */ diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h index 3c83a79c583f..eb760ca0b2e0 100644 --- a/include/acpi/acrestyp.h +++ b/include/acpi/acrestyp.h @@ -44,8 +44,6 @@ #ifndef __ACRESTYP_H__ #define __ACRESTYP_H__ -#pragma pack(push) /* Set default struct packing */ - /* * Definitions for Resource Attributes */ @@ -612,6 +610,4 @@ struct acpi_pci_routing_table { char source[4]; /* pad to 64 bits so sizeof() works in all cases */ }; -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACRESTYP_H__ */ diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index b32a33f1c2df..3b30e36b53b5 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -44,8 +44,6 @@ #ifndef __ACTBL_H__ #define __ACTBL_H__ -#pragma pack(push) /* Set default struct packing */ - /******************************************************************************* * * Fundamental ACPI tables @@ -406,6 +404,4 @@ struct acpi_table_desc { #define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control)) #define ACPI_FADT_V5_SIZE (u32) (sizeof (struct acpi_table_fadt)) -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACTBL_H__ */ diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index b7f0b0c6ff66..212c65de75df 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -44,8 +44,6 @@ #ifndef __ACTBL1_H__ #define __ACTBL1_H__ -#pragma pack(push) /* Set default struct packing */ - /******************************************************************************* * * Additional ACPI Tables (1) @@ -974,6 +972,8 @@ struct acpi_srat_x2apic_cpu_affinity { #define ACPI_SRAT_CPU_ENABLED (1) /* 00: Use affinity structure */ -#pragma pack(pop) /* Restore original struct packing */ +/* Reset to default packing */ + +#pragma pack() #endif /* __ACTBL1_H__ */ diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index 89a26135745b..f3372441e3a5 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -44,8 +44,6 @@ #ifndef __ACTBL2_H__ #define __ACTBL2_H__ -#pragma pack(push) /* Set default struct packing */ - /******************************************************************************* * * Additional ACPI Tables (2) @@ -1231,6 +1229,8 @@ struct acpi_table_wdrt { u8 units; }; -#pragma pack(pop) /* Restore original struct packing */ +/* Reset to default packing */ + +#pragma pack() #endif /* __ACTBL2_H__ */ diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index 85ebeea02b81..c2295cc4a5c0 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -44,8 +44,6 @@ #ifndef __ACTBL3_H__ #define __ACTBL3_H__ -#pragma pack(push) /* Set default struct packing */ - /******************************************************************************* * * Additional ACPI Tables (3) @@ -624,6 +622,8 @@ struct acpi_tpm2_control { u64 response_address; }; -#pragma pack(pop) /* Restore original struct packing */ +/* Reset to default packing */ + +#pragma pack() #endif /* __ACTBL3_H__ */ diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index c28573da1662..e76356574374 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -44,8 +44,6 @@ #ifndef __ACTYPES_H__ #define __ACTYPES_H__ -#pragma pack(push) /* Set default struct packing */ - /* acpisrc:struct_defs -- for acpisrc conversion */ /* @@ -1225,6 +1223,4 @@ struct acpi_memory_list { #define ACPI_OSI_WIN_7 0x0B #define ACPI_OSI_WIN_8 0x0C -#pragma pack(pop) /* Restore original struct packing */ - #endif /* __ACTYPES_H__ */ -- cgit v1.2.3 From f03be3525f1fac98b03a994522a7d78e9a70fe52 Mon Sep 17 00:00:00 2001 From: Alexander Mezin Date: Wed, 12 Mar 2014 00:58:46 +0700 Subject: ACPI / battery: move some ACPI_BATTERY_* definitions to header ACPI_BATTERY_CLASS is used in multiple places. Also, I'll use ACPI_BATTERY_NOTIFY_STATUS inside AC driver in one of following patches. So, create a header file and move ACPI_BATTERY_CLASS and ACPI_BATTERY_NOTIFY_* definitions into it. Also, remove copy of ACPI_BATTERY_CLASS from sbs.c Signed-off-by: Alexander Mezin Signed-off-by: Rafael J. Wysocki --- drivers/acpi/battery.c | 6 ++---- drivers/acpi/battery.h | 10 ++++++++++ drivers/acpi/sbs.c | 2 +- 3 files changed, 13 insertions(+), 5 deletions(-) create mode 100644 drivers/acpi/battery.h diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 797a6938d051..bfec70f12faa 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -39,15 +39,13 @@ #include #include +#include "battery.h" + #define PREFIX "ACPI: " #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF -#define ACPI_BATTERY_CLASS "battery" #define ACPI_BATTERY_DEVICE_NAME "Battery" -#define ACPI_BATTERY_NOTIFY_STATUS 0x80 -#define ACPI_BATTERY_NOTIFY_INFO 0x81 -#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82 /* Battery power unit: 0 means mW, 1 means mA */ #define ACPI_BATTERY_POWER_UNIT_MA 1 diff --git a/drivers/acpi/battery.h b/drivers/acpi/battery.h new file mode 100644 index 000000000000..6c084976987d --- /dev/null +++ b/drivers/acpi/battery.h @@ -0,0 +1,10 @@ +#ifndef __ACPI_BATTERY_H +#define __ACPI_BATTERY_H + +#define ACPI_BATTERY_CLASS "battery" + +#define ACPI_BATTERY_NOTIFY_STATUS 0x80 +#define ACPI_BATTERY_NOTIFY_INFO 0x81 +#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82 + +#endif diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index dbd48498b938..366ca40a6f70 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -37,12 +37,12 @@ #include #include "sbshc.h" +#include "battery.h" #define PREFIX "ACPI: " #define ACPI_SBS_CLASS "sbs" #define ACPI_AC_CLASS "ac_adapter" -#define ACPI_BATTERY_CLASS "battery" #define ACPI_SBS_DEVICE_NAME "Smart Battery System" #define ACPI_SBS_FILE_INFO "info" #define ACPI_SBS_FILE_STATE "state" -- cgit v1.2.3 From 411e0f77bdf79cdb80b61ab78acc6513c9ff8f97 Mon Sep 17 00:00:00 2001 From: Alexander Mezin Date: Wed, 12 Mar 2014 00:58:47 +0700 Subject: ACPI / battery: call ACPI notifier chain in acpi_battery_notify Allow other drivers to subscribe to battery status notifications. Just like AC driver does. Signed-off-by: Alexander Mezin Acked-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/battery.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index bfec70f12faa..9a2c63b20050 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -734,6 +734,7 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event) acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, acpi_battery_present(battery)); + acpi_notifier_call_chain(device, event, acpi_battery_present(battery)); /* acpi_battery_update could remove power_supply object */ if (old && battery->bat.dev) power_supply_changed(&battery->bat); -- cgit v1.2.3 From 4eee4f03ce7aea1ef212bb5c27a8b54d73315996 Mon Sep 17 00:00:00 2001 From: Alexander Mezin Date: Wed, 12 Mar 2014 00:58:48 +0700 Subject: ACPI / AC: recheck adapter status upon battery status changes On HP Pavilion dv6-6179er there are no notifications when AC adapter is plugged/unplugged. However, when AC status is read (acpi_ac_get_state), and if AC status has changed, AML code triggers the notification. This patch solves the problem by re-reading AC adapter status upon ACPI_BATTERY_NOTIFY_STATUS notification. Signed-off-by: Alexander Mezin Acked-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ac.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 6f190bc2b8b7..2c01c1da29ce 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -33,6 +33,7 @@ #include #include #include +#include "battery.h" #define PREFIX "ACPI: " @@ -57,6 +58,7 @@ struct acpi_ac { struct power_supply charger; struct platform_device *pdev; unsigned long long state; + struct notifier_block battery_nb; }; #define to_acpi_ac(x) container_of(x, struct acpi_ac, charger) @@ -152,6 +154,26 @@ static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data) return; } +static int acpi_ac_battery_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct acpi_ac *ac = container_of(nb, struct acpi_ac, battery_nb); + struct acpi_bus_event *event = (struct acpi_bus_event *)data; + + /* + * On HP Pavilion dv6-6179er AC status notifications aren't triggered + * when adapter is plugged/unplugged. However, battery status + * notifcations are triggered when battery starts charging or + * discharging. Re-reading AC status triggers lost AC notifications, + * if AC status has changed. + */ + if (strcmp(event->device_class, ACPI_BATTERY_CLASS) == 0 && + event->type == ACPI_BATTERY_NOTIFY_STATUS) + acpi_ac_get_state(ac); + + return NOTIFY_OK; +} + static int thinkpad_e530_quirk(const struct dmi_system_id *d) { ac_sleep_before_get_state_ms = 1000; @@ -215,6 +237,8 @@ static int acpi_ac_probe(struct platform_device *pdev) acpi_device_name(adev), acpi_device_bid(adev), ac->state ? "on-line" : "off-line"); + ac->battery_nb.notifier_call = acpi_ac_battery_notify; + register_acpi_notifier(&ac->battery_nb); end: if (result) kfree(ac); @@ -261,6 +285,7 @@ static int acpi_ac_remove(struct platform_device *pdev) ac = platform_get_drvdata(pdev); if (ac->charger.dev) power_supply_unregister(&ac->charger); + unregister_acpi_notifier(&ac->battery_nb); kfree(ac); -- cgit v1.2.3 From 07070e12cf5cab46a783a4753f07bb99e557473b Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Thu, 13 Mar 2014 12:47:39 +0800 Subject: ACPI: Remove duplicate definitions of PREFIX We already have a macro for PREFIX of "ACPI: " in drivers/acpi/internal.h, so remove the duplicate ones in ACPI drivers when internal.h is included. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_cmos_rtc.c | 2 -- drivers/acpi/container.c | 2 -- drivers/acpi/dock.c | 2 -- drivers/acpi/osl.c | 2 +- drivers/acpi/pci_link.c | 2 -- drivers/acpi/pci_root.c | 2 -- drivers/acpi/power.c | 2 -- drivers/acpi/processor_core.c | 1 - drivers/acpi/processor_driver.c | 2 -- drivers/acpi/sysfs.c | 2 -- drivers/acpi/video.c | 2 -- drivers/acpi/video_detect.c | 2 -- 12 files changed, 1 insertion(+), 22 deletions(-) diff --git a/drivers/acpi/acpi_cmos_rtc.c b/drivers/acpi/acpi_cmos_rtc.c index 84190ed89c04..961b45d18a5d 100644 --- a/drivers/acpi/acpi_cmos_rtc.c +++ b/drivers/acpi/acpi_cmos_rtc.c @@ -18,8 +18,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - ACPI_MODULE_NAME("cmos rtc"); static const struct acpi_device_id acpi_cmos_rtc_ids[] = { diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index 368f9ddb8480..dceba8310c4f 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -31,8 +31,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define _COMPONENT ACPI_CONTAINER_COMPONENT ACPI_MODULE_NAME("container"); diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 5bfd769fc91f..e6500ace5045 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -35,8 +35,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define ACPI_DOCK_DRIVER_DESCRIPTION "ACPI Dock Station Driver" ACPI_MODULE_NAME("dock"); diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index fc1aa7909690..ee11657b3339 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -52,7 +52,7 @@ #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME("osl"); -#define PREFIX "ACPI: " + struct acpi_os_dpc { acpi_osd_exec_callback function; void *context; diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 9418c7a1f786..cfd7581cc19f 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -43,8 +43,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define _COMPONENT ACPI_PCI_COMPONENT ACPI_MODULE_NAME("pci_link"); #define ACPI_PCI_LINK_CLASS "pci_irq_routing" diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c1c4102e6478..74e6c4e8cd05 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -39,8 +39,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define _COMPONENT ACPI_PCI_COMPONENT ACPI_MODULE_NAME("pci_root"); #define ACPI_PCI_ROOT_CLASS "pci_bridge" diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index ad7da686e6e6..e0bcfb642b52 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -46,8 +46,6 @@ #include "sleep.h" #include "internal.h" -#define PREFIX "ACPI: " - #define _COMPONENT ACPI_POWER_COMPONENT ACPI_MODULE_NAME("power"); #define ACPI_POWER_CLASS "power_resource" diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index a4eea9a508d3..57e0769656c6 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -15,7 +15,6 @@ #include "internal.h" -#define PREFIX "ACPI: " #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_core"); diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index c1c35623550f..7f70f3182d50 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -41,8 +41,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80 #define ACPI_PROCESSOR_NOTIFY_POWER 0x81 #define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82 diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 91a32cefb11f..38cb9782d4b8 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -12,8 +12,6 @@ #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("sysfs"); -#define PREFIX "ACPI: " - #ifdef CONFIG_ACPI_DEBUG /* * ACPI debug sysfs I/F, including: diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index b6ba88ed31ae..48c7e8af9c96 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -45,8 +45,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - #define ACPI_VIDEO_BUS_NAME "Video Bus" #define ACPI_VIDEO_DEVICE_NAME "Video Device" #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 19080c8e2f2a..33e3db548a29 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -40,8 +40,6 @@ #include "internal.h" -#define PREFIX "ACPI: " - ACPI_MODULE_NAME("video"); #define _COMPONENT ACPI_VIDEO_COMPONENT -- cgit v1.2.3 From 0bf6368ee8f25826d0645c0f7a4f17c8845356a4 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Sat, 15 Mar 2014 13:37:13 -0400 Subject: ACPI / button: Add ACPI Button event via netlink routine Commit 1696d9d (ACPI: Remove the old /proc/acpi/event interface) removed ACPI Button event which originally was sent to userspace via /proc/acpi/event. This caused ACPI shutdown regression on gentoo in VirtualBox. Now ACPI events are sent to userspace via netlink, so add ACPI Button event back via netlink routine. References: https://bugzilla.kernel.org/show_bug.cgi?id=71721 Reported-and-tested-by: Richard Musil Signed-off-by: Lan Tianyu Cc: 3.11+ # 3.11+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/button.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 714e957a871a..db35594d4df7 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -302,6 +302,10 @@ static void acpi_button_notify(struct acpi_device *device, u32 event) input_sync(input); pm_wakeup_event(&device->dev, 0); + acpi_bus_generate_netlink_event( + device->pnp.device_class, + dev_name(&device->dev), + event, ++button->pushed); } break; default: -- cgit v1.2.3 From 3b84d58d42d75025077f321997da402f0df67e59 Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Fri, 14 Mar 2014 12:10:54 +0530 Subject: cpufreq: arm_big_little: make vexpress driver depend on bL core driver Currently vexpress big LITTLE driver selects ARM_BIG_LITTLE_CPUFREQ, so if CONFIG_BIG_LITTLE isn't enabled and CONFIG_ARM_VEXPRESS_SPC_CPUFREQ is enabled, we get the following build warnings: warning: (ARM_VEXPRESS_SPC_CPUFREQ) selects ARM_BIG_LITTLE_CPUFREQ which has unmet direct dependencies (ARCH_HAS_CPUFREQ && CPU_FREQ && (ARM || ARM64) && ARM && BIG_LITTLE && ARM_CPU_TOPOLOGY && HAVE_CLK) To fix this, make ARM_VEXPRESS_SPC_CPUFREQ depend on ARM_BIG_LITTLE_CPUFREQ instead of selecting it. This also moves the entry for ARM_VEXPRESS_SPC_CPUFREQ along with other big LITTLE config entries. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/Kconfig.arm | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 31297499a60a..9fb627046e17 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -2,6 +2,7 @@ # ARM CPU Frequency scaling drivers # +# big LITTLE core layer and glue drivers config ARM_BIG_LITTLE_CPUFREQ tristate "Generic ARM big LITTLE CPUfreq driver" depends on ARM && BIG_LITTLE && ARM_CPU_TOPOLOGY && HAVE_CLK @@ -16,6 +17,14 @@ config ARM_DT_BL_CPUFREQ This enables probing via DT for Generic CPUfreq driver for ARM big.LITTLE platform. This gets frequency tables from DT. +config ARM_VEXPRESS_SPC_CPUFREQ + tristate "Versatile Express SPC based CPUfreq driver" + depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC + help + This add the CPUfreq driver support for Versatile Express + big.LITTLE platforms using SPC for power management. + + config ARM_EXYNOS_CPUFREQ bool @@ -241,11 +250,3 @@ config ARM_TEGRA_CPUFREQ default y help This adds the CPUFreq driver support for TEGRA SOCs. - -config ARM_VEXPRESS_SPC_CPUFREQ - tristate "Versatile Express SPC based CPUfreq driver" - select ARM_BIG_LITTLE_CPUFREQ - depends on ARCH_VEXPRESS_SPC - help - This add the CPUfreq driver support for Versatile Express - big.LITTLE platforms using SPC for power management. -- cgit v1.2.3 From 8f3ba3d3257be80636ed15cc221d6a2efb6a6e82 Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Fri, 14 Mar 2014 12:10:55 +0530 Subject: cpufreq: arm_big_little: set 'physical_cluster' for each CPU We have a per-CPU variable for managing which cluster a CPU belongs to. Currently, physical_cluster is set for policy->cpu only which leads to the following on some SoC's: - There are two clusters: - Cluster 0 has four ARM Cortex A7 CPUs (slower ones): 0,1,2,3 - Cluster 1 has four ARM Cortex A15 CPUs (faster ones): 4,5,6,7 - CPUs are booted in order 0,1..7 and so initially policy->cpu for A7 cluster would be 0 and for A15 cluster would be 4. - Now CPU4 (i.e. A15_0) is hotplugged out and so policy->cpu for A15 cluster becomes 5 (i.e. A15_1). - But physical cluster is only set for CPU0 and CPU4 in ARM big LITTLE driver and isn't updated. - Now freq change request comes for A15 cluster and we would try to update freq of physical_cluster of CPU5, i.e. A15_1. And it is currently set to zero (default value of uninitialized global variables). - And so we actually try to change freq of A7 cluster instead of A15. - This also results in kernel crash as sometimes we might request freq above A7's limit and CPU may behave badly.. Fix this by initializing physical_cluster for all CPUs of a policy. Based on previous work by Xin Wang. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/arm_big_little.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 3d8707848035..bad2ed317ba2 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -446,9 +446,12 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy) } if (cur_cluster < MAX_CLUSTERS) { + int cpu; + cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu)); - per_cpu(physical_cluster, policy->cpu) = cur_cluster; + for_each_cpu(cpu, policy->cpus) + per_cpu(physical_cluster, cpu) = cur_cluster; } else { /* Assumption: during init, we are always running on A15 */ per_cpu(physical_cluster, policy->cpu) = A15_CLUSTER; -- cgit v1.2.3 From 9832235f3f880ab2e58141885e3b5ed3b158c0fb Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 19 Mar 2014 12:48:30 +0100 Subject: cpufreq: Do not allow ->setpolicy drivers to provide ->target cpufreq drivers that provide the ->setpolicy() callback are supposed to have integrated governors, so they don't need to set ->target() or ->target_index() and may confuse the core if any of these callbacks is present. For this reason, add a check preventing ->setpolicy cpufreq drivers from registering if they have non-NULL ->target or ->target_index. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar --- drivers/cpufreq/cpufreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2677ff1c0a2c..24cd6ff9bb0b 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2299,7 +2299,9 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) if (!driver_data || !driver_data->verify || !driver_data->init || !(driver_data->setpolicy || driver_data->target_index || - driver_data->target)) + driver_data->target) || + (driver_data->setpolicy && (driver_data->target_index || + driver_data->target))) return -EINVAL; pr_debug("trying to register driver %s\n", driver_data->name); -- cgit v1.2.3 From 0b443ead714f0cba797a7f2476dd756f22b5421e Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Wed, 19 Mar 2014 11:24:58 +0530 Subject: cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE} Two cpufreq notifiers CPUFREQ_RESUMECHANGE and CPUFREQ_SUSPENDCHANGE have not been used for some time, so remove them to clean up code a bit. Signed-off-by: Viresh Kumar Reviewed-by: Srivatsa S. Bhat [rjw: Changelog] Signed-off-by: Rafael J. Wysocki --- Documentation/cpu-freq/core.txt | 4 ---- arch/arm/kernel/smp.c | 3 +-- arch/arm/kernel/smp_twd.c | 2 +- arch/arm/mach-pxa/viper.c | 3 --- arch/powerpc/oprofile/op_model_cell.c | 3 +-- arch/sparc/kernel/time_64.c | 3 +-- arch/x86/kernel/tsc.c | 3 +-- drivers/cpufreq/cpufreq.c | 3 +-- drivers/pcmcia/sa11xx_base.c | 3 --- drivers/tty/serial/sh-sci.c | 3 +-- include/linux/cpufreq.h | 2 -- 11 files changed, 7 insertions(+), 25 deletions(-) diff --git a/Documentation/cpu-freq/core.txt b/Documentation/cpu-freq/core.txt index ce0666e51036..0060d76b445f 100644 --- a/Documentation/cpu-freq/core.txt +++ b/Documentation/cpu-freq/core.txt @@ -92,7 +92,3 @@ values: cpu - number of the affected CPU old - old frequency new - new frequency - -If the cpufreq core detects the frequency has changed while the system -was suspended, these notifiers are called with CPUFREQ_RESUMECHANGE as -second argument. diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index b7b4c86e338b..7c4fada440f0 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -674,8 +674,7 @@ static int cpufreq_callback(struct notifier_block *nb, } if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) || - (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) || - (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) { + (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)) { loops_per_jiffy = cpufreq_scale(global_l_p_j_ref, global_l_p_j_ref_freq, freq->new); diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 6591e26fc13f..dfc32130bc44 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -166,7 +166,7 @@ static int twd_cpufreq_transition(struct notifier_block *nb, * frequency. The timer is local to a cpu, so cross-call to the * changing cpu. */ - if (state == CPUFREQ_POSTCHANGE || state == CPUFREQ_RESUMECHANGE) + if (state == CPUFREQ_POSTCHANGE) smp_call_function_single(freqs->cpu, twd_update_frequency, NULL, 1); diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c index 29905b127ad9..41f27f667ca8 100644 --- a/arch/arm/mach-pxa/viper.c +++ b/arch/arm/mach-pxa/viper.c @@ -885,9 +885,6 @@ static int viper_cpufreq_notifier(struct notifier_block *nb, viper_set_core_cpu_voltage(freq->new, 0); } break; - case CPUFREQ_RESUMECHANGE: - viper_set_core_cpu_voltage(freq->new, 0); - break; default: /* ignore */ break; diff --git a/arch/powerpc/oprofile/op_model_cell.c b/arch/powerpc/oprofile/op_model_cell.c index 1f0ebdeea5f7..863d89386f60 100644 --- a/arch/powerpc/oprofile/op_model_cell.c +++ b/arch/powerpc/oprofile/op_model_cell.c @@ -1121,8 +1121,7 @@ oprof_cpufreq_notify(struct notifier_block *nb, unsigned long val, void *data) int ret = 0; struct cpufreq_freqs *frq = data; if ((val == CPUFREQ_PRECHANGE && frq->old < frq->new) || - (val == CPUFREQ_POSTCHANGE && frq->old > frq->new) || - (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) + (val == CPUFREQ_POSTCHANGE && frq->old > frq->new)) set_spu_profiling_frequency(frq->new, spu_cycle_reset); return ret; } diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c index c3d82b5f54ca..b397e053b872 100644 --- a/arch/sparc/kernel/time_64.c +++ b/arch/sparc/kernel/time_64.c @@ -659,8 +659,7 @@ static int sparc64_cpufreq_notifier(struct notifier_block *nb, unsigned long val ft->clock_tick_ref = cpu_data(cpu).clock_tick; } if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) || - (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) || - (val == CPUFREQ_RESUMECHANGE)) { + (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)) { cpu_data(cpu).clock_tick = cpufreq_scale(ft->clock_tick_ref, ft->ref_freq, diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index cfbe99f88830..7a9296ab8834 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -914,8 +914,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, tsc_khz_ref = tsc_khz; } if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) || - (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) || - (val == CPUFREQ_RESUMECHANGE)) { + (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)) { *lpj = cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new); tsc_khz = cpufreq_scale(tsc_khz_ref, ref_freq, freq->new); diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 24cd6ff9bb0b..e3aa9deb40d9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -264,8 +264,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) pr_debug("saving %lu as reference value for loops_per_jiffy; freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq); } - if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) || - (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) { + if (val == CPUFREQ_POSTCHANGE && ci->old != ci->new) { loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq, ci->new); pr_debug("scaling loops_per_jiffy to %lu for frequency %u kHz\n", diff --git a/drivers/pcmcia/sa11xx_base.c b/drivers/pcmcia/sa11xx_base.c index 6eecd7cddf57..54d3089d157b 100644 --- a/drivers/pcmcia/sa11xx_base.c +++ b/drivers/pcmcia/sa11xx_base.c @@ -125,9 +125,6 @@ sa1100_pcmcia_frequency_change(struct soc_pcmcia_socket *skt, if (freqs->new < freqs->old) sa1100_pcmcia_set_mecr(skt, freqs->new); break; - case CPUFREQ_RESUMECHANGE: - sa1100_pcmcia_set_mecr(skt, freqs->new); - break; } return 0; diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index be33d2b0613b..7e0b62602632 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1041,8 +1041,7 @@ static int sci_notifier(struct notifier_block *self, sci_port = container_of(self, struct sci_port, freq_transition); - if ((phase == CPUFREQ_POSTCHANGE) || - (phase == CPUFREQ_RESUMECHANGE)) { + if (phase == CPUFREQ_POSTCHANGE) { struct uart_port *port = &sci_port->port; spin_lock_irqsave(&port->lock, flags); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 31c431e150a7..70929bcf1a9d 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -318,8 +318,6 @@ static inline void cpufreq_resume(void) {} /* Transition notifiers */ #define CPUFREQ_PRECHANGE (0) #define CPUFREQ_POSTCHANGE (1) -#define CPUFREQ_RESUMECHANGE (8) -#define CPUFREQ_SUSPENDCHANGE (9) /* Policy Notifiers */ #define CPUFREQ_ADJUST (0) -- cgit v1.2.3 From 9f380fc56ae1175781b67cea4bca1a2b183f9382 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 17 Mar 2014 15:46:44 +0100 Subject: ACPI / video: fix ACPI_VIDEO dependencies ACPI_VIDEO stopped depending on VIDEO_OUTPUT_CONTROL over 3 years ago (see commit 677bd810, "ACPI video: remove output switching control".) So it's about time to remove the Kconfig dependency between these two options. Signed-off-by: Jean Delvare Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 4770de5707b9..19520221f41b 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -115,7 +115,7 @@ config ACPI_BUTTON config ACPI_VIDEO tristate "Video" - depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL + depends on X86 && BACKLIGHT_CLASS_DEVICE depends on INPUT select THERMAL help -- cgit v1.2.3 From a386c006a791840cef43217da4e4d85b2a0c4334 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 17 Mar 2014 16:17:49 +0100 Subject: ACPI / gpu / drm: Stop selecting VIDEO_OUTPUT_CONTROL ACPI_VIDEO no longer depends on VIDEO_OUTPUT_CONTROL, so drivers which want to select ACPI_VIDEO no longer have to select VIDEO_OUTPUT_CONTROL. Signed-off-by: Jean Delvare Acked-by: Daniel Vetter Signed-off-by: Rafael J. Wysocki --- drivers/gpu/drm/gma500/Kconfig | 1 - drivers/gpu/drm/i915/Kconfig | 1 - drivers/gpu/drm/nouveau/Kconfig | 3 +-- 3 files changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig index 508cf99a292d..17f928ec84ea 100644 --- a/drivers/gpu/drm/gma500/Kconfig +++ b/drivers/gpu/drm/gma500/Kconfig @@ -10,7 +10,6 @@ config DRM_GMA500 # GMA500 depends on ACPI_VIDEO when ACPI is enabled, just like i915 select ACPI_VIDEO if ACPI select BACKLIGHT_CLASS_DEVICE if ACPI - select VIDEO_OUTPUT_CONTROL if ACPI select INPUT if ACPI help Say yes for an experimental 2D KMS framebuffer driver for the diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 73ed59eff139..bea2d67196fb 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -14,7 +14,6 @@ config DRM_I915 # but for select to work, need to select ACPI_VIDEO's dependencies, ick select BACKLIGHT_LCD_SUPPORT if ACPI select BACKLIGHT_CLASS_DEVICE if ACPI - select VIDEO_OUTPUT_CONTROL if ACPI select INPUT if ACPI select ACPI_VIDEO if ACPI select ACPI_BUTTON if ACPI diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig index 7cf787d697b1..637c29a33127 100644 --- a/drivers/gpu/drm/nouveau/Kconfig +++ b/drivers/gpu/drm/nouveau/Kconfig @@ -11,7 +11,7 @@ config DRM_NOUVEAU select FB select FRAMEBUFFER_CONSOLE if !EXPERT select FB_BACKLIGHT if DRM_NOUVEAU_BACKLIGHT - select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL && INPUT + select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && INPUT select X86_PLATFORM_DEVICES if ACPI && X86 select ACPI_WMI if ACPI && X86 select MXM_WMI if ACPI && X86 @@ -19,7 +19,6 @@ config DRM_NOUVEAU # Similar to i915, we need to select ACPI_VIDEO and it's dependencies select BACKLIGHT_LCD_SUPPORT if ACPI && X86 select BACKLIGHT_CLASS_DEVICE if ACPI && X86 - select VIDEO_OUTPUT_CONTROL if ACPI && X86 select INPUT if ACPI && X86 select THERMAL if ACPI && X86 select ACPI_VIDEO if ACPI && X86 -- cgit v1.2.3 From 1c71a1b8a738621fd86cd787ea5887bf817d7022 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 17 Mar 2014 15:48:23 +0100 Subject: acer-wmi: Stop selecting VIDEO_OUTPUT_CONTROL ACPI_VIDEO no longer depends on VIDEO_OUTPUT_CONTROL, so drivers which want to select ACPI_VIDEO no longer have to select VIDEO_OUTPUT_CONTROL. Signed-off-by: Jean Delvare Acked-by: "Lee, Chun-Yi" Signed-off-by: Rafael J. Wysocki --- drivers/platform/x86/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 5ae65c11d544..5f67843c7fb7 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -27,8 +27,6 @@ config ACER_WMI depends on ACPI_WMI select INPUT_SPARSEKMAP # Acer WMI depends on ACPI_VIDEO when ACPI is enabled - # but for select to work, need to select ACPI_VIDEO's dependencies, ick - select VIDEO_OUTPUT_CONTROL if ACPI select ACPI_VIDEO if ACPI ---help--- This is a driver for newer Acer (and Wistron) laptops. It adds -- cgit v1.2.3 From 782dd91c8761dc2ef9be28fbe7a812f4bad3c785 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 19 Mar 2014 19:38:46 +0100 Subject: fujitsu-laptop: Drop unneeded include The fujitsu-laptop driver includes but doesn't call any of its functions. Drop the unneeded include to avoid unnecessary driver rebuilds. Signed-off-by: Jean Delvare Acked-by: Jonathan Woithe Signed-off-by: Rafael J. Wysocki --- drivers/platform/x86/fujitsu-laptop.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index be02bcc346d3..e6f336270c21 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -66,7 +66,6 @@ #include #include #include -#include #include #include #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) -- cgit v1.2.3 From f167a64e9d67ebd03d304e369c12011cf2bffaf5 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 17 Mar 2014 15:49:10 +0100 Subject: video / output: Drop display output class support It was only ever used by the ACPI video driver, and that only use case vanished over 3 years ago (see commit 677bd810, "ACPI video: remove output switching control".) So this is dead code and I guess we can remove it now. Signed-off-by: Jean Delvare Signed-off-by: Rafael J. Wysocki --- drivers/video/Kconfig | 6 -- drivers/video/Makefile | 2 - drivers/video/output.c | 133 ------------------------------------------- include/linux/video_output.h | 57 ------------------- 4 files changed, 198 deletions(-) delete mode 100644 drivers/video/output.c delete mode 100644 include/linux/video_output.h diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index dade5b7699bc..97a8f3a12a7b 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -27,12 +27,6 @@ config VGASTATE tristate default n -config VIDEO_OUTPUT_CONTROL - tristate "Lowlevel video output switch controls" - help - This framework adds support for low-level control of the video - output switch. - config VIDEOMODE_HELPERS bool diff --git a/drivers/video/Makefile b/drivers/video/Makefile index ae17ddf49a00..08d6a4ab3ace 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -172,8 +172,6 @@ obj-$(CONFIG_FB_SIMPLE) += simplefb.o # the test framebuffer is last obj-$(CONFIG_FB_VIRTUAL) += vfb.o -#video output switch sysfs driver -obj-$(CONFIG_VIDEO_OUTPUT_CONTROL) += output.o obj-$(CONFIG_VIDEOMODE_HELPERS) += display_timing.o videomode.o ifeq ($(CONFIG_OF),y) obj-$(CONFIG_VIDEOMODE_HELPERS) += of_display_timing.o of_videomode.o diff --git a/drivers/video/output.c b/drivers/video/output.c deleted file mode 100644 index 1446c49fe6af..000000000000 --- a/drivers/video/output.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * output.c - Display Output Switch driver - * - * Copyright (C) 2006 Luming Yu - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include -#include -#include -#include -#include - - -MODULE_DESCRIPTION("Display Output Switcher Lowlevel Control Abstraction"); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Luming Yu "); - -static ssize_t state_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - ssize_t ret_size = 0; - struct output_device *od = to_output_device(dev); - if (od->props) - ret_size = sprintf(buf,"%.8x\n",od->props->get_status(od)); - return ret_size; -} - -static ssize_t state_store(struct device *dev, struct device_attribute *attr, - const char *buf,size_t count) -{ - char *endp; - struct output_device *od = to_output_device(dev); - int request_state = simple_strtoul(buf,&endp,0); - size_t size = endp - buf; - - if (isspace(*endp)) - size++; - if (size != count) - return -EINVAL; - - if (od->props) { - od->request_state = request_state; - od->props->set_state(od); - } - return count; -} -static DEVICE_ATTR_RW(state); - -static void video_output_release(struct device *dev) -{ - struct output_device *od = to_output_device(dev); - kfree(od); -} - -static struct attribute *video_output_attrs[] = { - &dev_attr_state.attr, - NULL, -}; -ATTRIBUTE_GROUPS(video_output); - -static struct class video_output_class = { - .name = "video_output", - .dev_release = video_output_release, - .dev_groups = video_output_groups, -}; - -struct output_device *video_output_register(const char *name, - struct device *dev, - void *devdata, - struct output_properties *op) -{ - struct output_device *new_dev; - int ret_code = 0; - - new_dev = kzalloc(sizeof(struct output_device),GFP_KERNEL); - if (!new_dev) { - ret_code = -ENOMEM; - goto error_return; - } - new_dev->props = op; - new_dev->dev.class = &video_output_class; - new_dev->dev.parent = dev; - dev_set_name(&new_dev->dev, "%s", name); - dev_set_drvdata(&new_dev->dev, devdata); - ret_code = device_register(&new_dev->dev); - if (ret_code) { - kfree(new_dev); - goto error_return; - } - return new_dev; - -error_return: - return ERR_PTR(ret_code); -} -EXPORT_SYMBOL(video_output_register); - -void video_output_unregister(struct output_device *dev) -{ - if (!dev) - return; - device_unregister(&dev->dev); -} -EXPORT_SYMBOL(video_output_unregister); - -static void __exit video_output_class_exit(void) -{ - class_unregister(&video_output_class); -} - -static int __init video_output_class_init(void) -{ - return class_register(&video_output_class); -} - -postcore_initcall(video_output_class_init); -module_exit(video_output_class_exit); diff --git a/include/linux/video_output.h b/include/linux/video_output.h deleted file mode 100644 index ed5cdeb3604d..000000000000 --- a/include/linux/video_output.h +++ /dev/null @@ -1,57 +0,0 @@ -/* - * - * Copyright (C) 2006 Luming Yu - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#ifndef _LINUX_VIDEO_OUTPUT_H -#define _LINUX_VIDEO_OUTPUT_H -#include -#include -struct output_device; -struct output_properties { - int (*set_state)(struct output_device *); - int (*get_status)(struct output_device *); -}; -struct output_device { - int request_state; - struct output_properties *props; - struct device dev; -}; -#define to_output_device(obj) container_of(obj, struct output_device, dev) -#if defined(CONFIG_VIDEO_OUTPUT_CONTROL) || defined(CONFIG_VIDEO_OUTPUT_CONTROL_MODULE) -struct output_device *video_output_register(const char *name, - struct device *dev, - void *devdata, - struct output_properties *op); -void video_output_unregister(struct output_device *dev); -#else -static struct output_device *video_output_register(const char *name, - struct device *dev, - void *devdata, - struct output_properties *op) -{ - return ERR_PTR(-ENODEV); -} -static void video_output_unregister(struct output_device *dev) -{ - return; -} -#endif -#endif -- cgit v1.2.3 From 651665dbfdfca3201966c72edefdb0391160bea9 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 17 Mar 2014 21:26:11 +0100 Subject: PM / Runtime: Update runtime_idle() documentation for return value meaning As of commit 45f0a85c8258 ('PM / Runtime: Rework the "runtime idle" helper routine'), the return value of ->runtime_idle() is no longer ignored by the PM core, but used to decide whether to suspend the device or not. Update the documentation to match the code. Signed-off-by: Geert Uytterhoeven Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/pm.h b/include/linux/pm.h index 8c6583a53a06..0298b5e5de01 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -264,9 +264,9 @@ typedef struct pm_message { * registers, so that it is fully operational. * * @runtime_idle: Device appears to be inactive and it might be put into a - * low-power state if all of the necessary conditions are satisfied. Check - * these conditions and handle the device as appropriate, possibly queueing - * a suspend request for it. The return value is ignored by the PM core. + * low-power state if all of the necessary conditions are satisfied. + * Check these conditions, and return 0 if it's appropriate to let the PM + * core queue a suspend request for the device. * * Refer to Documentation/power/runtime_pm.txt for more information about the * role of the above callbacks in device runtime power management. -- cgit v1.2.3 From 7fb060820acbc55eeab342d1ce6cdffc80797478 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 20 Mar 2014 03:34:47 +0100 Subject: MAINTAINERS: Reorder maintainer addresses for PM and ACPI For a few subsystems I am the person who actually applies patches and people don't CC me on patch submissions, because my address is not the first one in the given MAINTAINERS item. Reorder PM and ACPI maintainer addresses in MAINTAINERS to make the probability of that a bit smaller. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek --- MAINTAINERS | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index b3fdb0f004ba..9d33ccbc3934 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -242,8 +242,8 @@ S: Maintained F: drivers/platform/x86/acer-wmi.c ACPI -M: Len Brown M: Rafael J. Wysocki +M: Len Brown L: linux-acpi@vger.kernel.org W: https://01.org/linux-acpi Q: https://patchwork.kernel.org/project/linux-acpi/list/ @@ -3657,8 +3657,8 @@ S: Maintained F: fs/freevxfs/ FREEZER -M: Pavel Machek M: "Rafael J. Wysocki" +M: Pavel Machek L: linux-pm@vger.kernel.org S: Supported F: Documentation/power/freezing-of-tasks.txt @@ -4022,8 +4022,8 @@ S: Maintained F: drivers/video/hgafb.c HIBERNATION (aka Software Suspend, aka swsusp) -M: Pavel Machek M: "Rafael J. Wysocki" +M: Pavel Machek L: linux-pm@vger.kernel.org S: Supported F: arch/x86/power/ @@ -8425,9 +8425,9 @@ F: arch/sh/ F: drivers/sh/ SUSPEND TO RAM +M: "Rafael J. Wysocki" M: Len Brown M: Pavel Machek -M: "Rafael J. Wysocki" L: linux-pm@vger.kernel.org S: Supported F: Documentation/power/ -- cgit v1.2.3 From bfa709bc823fc32ee8dd5220d1711b46078235d8 Mon Sep 17 00:00:00 2001 From: Zhuoyu Zhang Date: Tue, 18 Mar 2014 13:41:25 +0800 Subject: cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs According to the data provided by HW Team, at least 12 internal platform clock cycles are required to stabilize a DFS clock switch on FSL e500mc Socs. This patch replaces the CPUFREQ_ETERNAL with appropriate HW clock transition latency to make DFS governors work normally on Freescale e500mc boards. Signed-off-by: Zhuoyu Zhang Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/ppc-corenet-cpufreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 037949d575bd..3bd9123e7026 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -21,6 +21,7 @@ #include #include #include +#include /** * struct cpu_data - per CPU data struct @@ -205,7 +206,8 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) for_each_cpu(i, per_cpu(cpu_mask, cpu)) per_cpu(cpu_data, i) = data; - policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; + policy->cpuinfo.transition_latency = + (12 * NSEC_PER_SEC) / fsl_get_sys_freq(); of_node_put(np); return 0; -- cgit v1.2.3 From e5c87b762871c3377e456f6a57769dc63bdddd4b Mon Sep 17 00:00:00 2001 From: Stratos Karafotis Date: Wed, 19 Mar 2014 23:29:17 +0200 Subject: cpufreq: Fix checkpatch errors and warnings Fix 2 checkpatch errors about using assignment in if condition, 1 checkpatch error about a required space after comma and 3 warnings about line over 80 characters. Signed-off-by: Stratos Karafotis Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index e3aa9deb40d9..77a99bfea9a9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -939,8 +939,11 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, up_write(&policy->rwsem); if (has_target()) { - if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) || - (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) { + ret = __cpufreq_governor(policy, CPUFREQ_GOV_START); + if (!ret) + ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); + + if (ret) { pr_err("%s: Failed to start governor\n", __func__); return ret; } @@ -1394,14 +1397,14 @@ static int __cpufreq_remove_dev_finish(struct device *dev, if (!cpufreq_suspended) cpufreq_policy_free(policy); - } else { - if (has_target()) { - if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) || - (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) { - pr_err("%s: Failed to start governor\n", - __func__); - return ret; - } + } else if (has_target()) { + ret = __cpufreq_governor(policy, CPUFREQ_GOV_START); + if (!ret) + ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); + + if (ret) { + pr_err("%s: Failed to start governor\n", __func__); + return ret; } } @@ -2086,7 +2089,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, if (old_gov) { __cpufreq_governor(policy, CPUFREQ_GOV_STOP); up_write(&policy->rwsem); - __cpufreq_governor(policy,CPUFREQ_GOV_POLICY_EXIT); + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); down_write(&policy->rwsem); } -- cgit v1.2.3 From bda9f552f9826313ef8a477fc8e4891de9ae5e73 Mon Sep 17 00:00:00 2001 From: Stratos Karafotis Date: Thu, 20 Mar 2014 01:25:13 +0200 Subject: cpufreq: Remove unnecessary braces Remove unnecessary braces from a single statement. Signed-off-by: Stratos Karafotis Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 77a99bfea9a9..3c56c4759aa1 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1333,10 +1333,9 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, if (new_cpu >= 0) { update_policy_cpu(policy, new_cpu); - if (!cpufreq_suspended) { + if (!cpufreq_suspended) pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n", __func__, new_cpu, cpu); - } } } -- cgit v1.2.3 From 367dc4aa932bfb33a3189064d33f7890a8ec1ca8 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Wed, 19 Mar 2014 08:45:53 -0700 Subject: cpufreq: Add stop CPU callback to cpufreq_driver interface This callback allows the driver to do clean up before the CPU is completely down and its state cannot be modified. This is used by the intel_pstate driver to reduce the requested P state prior to the core going away. This is required because the requested P state of the offline core is used to select the package P state. This effectively sets the floor package P state to the requested P state on the offline core. Signed-off-by: Dirk Brandewie [rjw: Minor modifications] Signed-off-by: Rafael J. Wysocki --- Documentation/cpu-freq/cpu-drivers.txt | 8 +++++++- drivers/cpufreq/cpufreq.c | 2 ++ include/linux/cpufreq.h | 1 + 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt index 8b1a4451422e..48da5fdcb9f1 100644 --- a/Documentation/cpu-freq/cpu-drivers.txt +++ b/Documentation/cpu-freq/cpu-drivers.txt @@ -61,7 +61,13 @@ target_index - See below on the differences. And optionally -cpufreq_driver.exit - A pointer to a per-CPU cleanup function. +cpufreq_driver.exit - A pointer to a per-CPU cleanup + function called during CPU_POST_DEAD + phase of cpu hotplug process. + +cpufreq_driver.stop_cpu - A pointer to a per-CPU stop function + called during CPU_DOWN_PREPARE phase of + cpu hotplug process. cpufreq_driver.resume - A pointer to a per-CPU resume function which is called with interrupts disabled diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 3c56c4759aa1..3aa7a7a226b3 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1337,6 +1337,8 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n", __func__, new_cpu, cpu); } + } else if (cpufreq_driver->stop_cpu && cpufreq_driver->setpolicy) { + cpufreq_driver->stop_cpu(policy); } return 0; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 70929bcf1a9d..2d2e62c8666a 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -227,6 +227,7 @@ struct cpufreq_driver { int (*bios_limit) (int cpu, unsigned int *limit); int (*exit) (struct cpufreq_policy *policy); + void (*stop_cpu) (struct cpufreq_policy *policy); int (*suspend) (struct cpufreq_policy *policy); int (*resume) (struct cpufreq_policy *policy); struct freq_attr **attr; -- cgit v1.2.3 From bb18008f8086283f8f03e8e50fbbf17f213b9ea9 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Wed, 19 Mar 2014 08:45:54 -0700 Subject: intel_pstate: Set core to min P state during core offline Change to use the new ->stop_cpu() callback to do clean up during CPU hotplug. The requested P state for an offline core will be used by the hardware coordination function to select the package P state. If the core is under load when it is offlined it will fix the package P state floor to the requested P state of offline core. Reported-by: Patrick Marlier Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 9ab109c0f90c..bcb9a6d0ae11 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -446,7 +446,7 @@ static void core_set_pstate(struct cpudata *cpudata, int pstate) if (limits.no_turbo) val |= (u64)1 << 32; - wrmsrl(MSR_IA32_PERF_CTL, val); + wrmsrl_on_cpu(cpudata->cpu, MSR_IA32_PERF_CTL, val); } static struct cpu_defaults core_params = { @@ -771,14 +771,17 @@ static int intel_pstate_verify_policy(struct cpufreq_policy *policy) return 0; } -static int intel_pstate_cpu_exit(struct cpufreq_policy *policy) +static void intel_pstate_stop_cpu(struct cpufreq_policy *policy) { - int cpu = policy->cpu; + int cpu_num = policy->cpu; + struct cpudata *cpu = all_cpu_data[cpu_num]; - del_timer(&all_cpu_data[cpu]->timer); - kfree(all_cpu_data[cpu]); - all_cpu_data[cpu] = NULL; - return 0; + pr_info("intel_pstate CPU %d exiting\n", cpu_num); + + del_timer(&all_cpu_data[cpu_num]->timer); + intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate); + kfree(all_cpu_data[cpu_num]); + all_cpu_data[cpu_num] = NULL; } static int intel_pstate_cpu_init(struct cpufreq_policy *policy) @@ -816,7 +819,7 @@ static struct cpufreq_driver intel_pstate_driver = { .setpolicy = intel_pstate_set_policy, .get = intel_pstate_get, .init = intel_pstate_cpu_init, - .exit = intel_pstate_cpu_exit, + .stop_cpu = intel_pstate_stop_cpu, .name = "intel_pstate", }; -- cgit v1.2.3 From 33fe0ad946bbb0a2f04f551fce68a74d8821f32e Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 17 Mar 2014 21:26:10 +0100 Subject: PM / sleep: Correct whitespace errors in rjw> Why exactly are they errors? Geert> checkpatch.pl says: "WARNING: please, no space before tabs", Vim (with "let c_space_errors=1") shows them in red. Signed-off-by: Geert Uytterhoeven Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/include/linux/pm.h b/include/linux/pm.h index 6fffbcd7bc37..f902ad83986e 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -379,7 +379,7 @@ const struct dev_pm_ops name = { \ * * ON No transition. * - * FREEZE System is going to hibernate, call ->prepare() and ->freeze() + * FREEZE System is going to hibernate, call ->prepare() and ->freeze() * for all devices. * * SUSPEND System is going to suspend, call ->prepare() and ->suspend() @@ -423,7 +423,7 @@ const struct dev_pm_ops name = { \ #define PM_EVENT_INVALID (-1) #define PM_EVENT_ON 0x0000 -#define PM_EVENT_FREEZE 0x0001 +#define PM_EVENT_FREEZE 0x0001 #define PM_EVENT_SUSPEND 0x0002 #define PM_EVENT_HIBERNATE 0x0004 #define PM_EVENT_QUIESCE 0x0008 @@ -614,11 +614,11 @@ struct dev_pm_domain { * message is implicit: * * ON Driver starts working again, responding to hardware events - * and software requests. The hardware may have gone through - * a power-off reset, or it may have maintained state from the - * previous suspend() which the driver will rely on while - * resuming. On most platforms, there are no restrictions on - * availability of resources like clocks during resume(). + * and software requests. The hardware may have gone through + * a power-off reset, or it may have maintained state from the + * previous suspend() which the driver will rely on while + * resuming. On most platforms, there are no restrictions on + * availability of resources like clocks during resume(). * * Other transitions are triggered by messages sent using suspend(). All * these transitions quiesce the driver, so that I/O queues are inactive. @@ -628,21 +628,21 @@ struct dev_pm_domain { * differ according to the message: * * SUSPEND Quiesce, enter a low power device state appropriate for - * the upcoming system state (such as PCI_D3hot), and enable - * wakeup events as appropriate. + * the upcoming system state (such as PCI_D3hot), and enable + * wakeup events as appropriate. * * HIBERNATE Enter a low power device state appropriate for the hibernation - * state (eg. ACPI S4) and enable wakeup events as appropriate. + * state (eg. ACPI S4) and enable wakeup events as appropriate. * * FREEZE Quiesce operations so that a consistent image can be saved; - * but do NOT otherwise enter a low power device state, and do - * NOT emit system wakeup events. + * but do NOT otherwise enter a low power device state, and do + * NOT emit system wakeup events. * * PRETHAW Quiesce as if for FREEZE; additionally, prepare for restoring - * the system from a snapshot taken after an earlier FREEZE. - * Some drivers will need to reset their hardware state instead - * of preserving it, to ensure that it's never mistaken for the - * state which that earlier snapshot had set up. + * the system from a snapshot taken after an earlier FREEZE. + * Some drivers will need to reset their hardware state instead + * of preserving it, to ensure that it's never mistaken for the + * state which that earlier snapshot had set up. * * A minimally power-aware driver treats all messages as SUSPEND, fully * reinitializes its device during resume() -- whether or not it was reset -- cgit v1.2.3 From e35d35a1c0b3a7317d77e03e686a4a205cdd4eed Mon Sep 17 00:00:00 2001 From: Saravana Kannan Date: Thu, 27 Feb 2014 19:38:57 -0800 Subject: PM / devfreq: Rewrite devfreq_update_status() to fix multiple bugs The current devfreq_update_status() has the following bugs: - If previous frequency doesn't have a valid level, it does an out of bounds access into the trans_table and causes memory corruption. - When the new frequency doesn't have a valid level, the time spent in the new frequency is counted towards the next valid frequency switch instead of being ignored. - The time spent on the previous frequency is added to the new frequency's stats instead of the previous frequency's stats. This patch fixes all of this. Signed-off-by: Saravana Kannan Signed-off-by: MyungJoo Ham --- drivers/devfreq/devfreq.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index a0b2f7e0eedb..2042ec3656ba 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -91,26 +91,35 @@ static int devfreq_get_freq_level(struct devfreq *devfreq, unsigned long freq) */ static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq) { - int lev, prev_lev; + int lev, prev_lev, ret = 0; unsigned long cur_time; - lev = devfreq_get_freq_level(devfreq, freq); - if (lev < 0) - return lev; - cur_time = jiffies; - devfreq->time_in_state[lev] += + + prev_lev = devfreq_get_freq_level(devfreq, devfreq->previous_freq); + if (prev_lev < 0) { + ret = prev_lev; + goto out; + } + + devfreq->time_in_state[prev_lev] += cur_time - devfreq->last_stat_updated; - if (freq != devfreq->previous_freq) { - prev_lev = devfreq_get_freq_level(devfreq, - devfreq->previous_freq); + + lev = devfreq_get_freq_level(devfreq, freq); + if (lev < 0) { + ret = lev; + goto out; + } + + if (lev != prev_lev) { devfreq->trans_table[(prev_lev * devfreq->profile->max_state) + lev]++; devfreq->total_trans++; } - devfreq->last_stat_updated = cur_time; - return 0; +out: + devfreq->last_stat_updated = cur_time; + return ret; } /** -- cgit v1.2.3