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2013-05-09Merge tag 'acpi-fixes-3.10-rc1' of ↵Linus Torvalds3-2/+16
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPICA fixes from Rafael Wysocki: - _INI regression fix from Tomasz Nowicki. - Fix for a possible memory leak in _OSI support routine from Jung-uk Kim. - Fix for a possible buffer overflow during field unit read operation from Bob Moore. * tag 'acpi-fixes-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPICA: ACPICA: Fix for _INI regression ACPICA: _OSI support: Fix possible memory leak ACPICA: Fix possible buffer overflow during a field unit read operation
2013-05-08ACPICA: ACPICA: Fix for _INI regressionTomasz Nowicki1-0/+1
This change fixes a problem introduced by recent commit c34c82b (ACPICA: Predefine names: Add allowed argument types to master info table) in 20130328 where _INI methods are no longer executed properly because of a memory block that is not initialized properly. ACPICA BZ1016. Tomasz Nowicki <tomasz.nowicki@linaro.org> References: https://bugs.acpica.org/show_bug.cgi?id=1016 Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-08ACPICA: _OSI support: Fix possible memory leakJung-uk Kim1-1/+2
Fixes a possible memory leak in the error exit path introduced by recent commit 388a990 ("ACPICA: _OSI Support: handle any errors from acpi_os_acquire_mutex()"). [rjw: Changelog] Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-08ACPICA: Fix possible buffer overflow during a field unit read operationBob Moore1-1/+13
Can only happen under these conditions: 1) The DSDT version is 1, meaning integers are 32-bits. 2) The field is between 33 and 64 bits long. It applies cleanly back to ACPICA 20100806+ (Linux v2.6.37+). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Cc: 2.6.37+ <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-01Merge branch 'for-linus' of ↵Linus Torvalds5-26/+13
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS updates from Al Viro, Misc cleanups all over the place, mainly wrt /proc interfaces (switch create_proc_entry to proc_create(), get rid of the deprecated create_proc_read_entry() in favor of using proc_create_data() and seq_file etc). 7kloc removed. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits) don't bother with deferred freeing of fdtables proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h proc: Make the PROC_I() and PDE() macros internal to procfs proc: Supply a function to remove a proc entry by PDE take cgroup_open() and cpuset_open() to fs/proc/base.c ppc: Clean up scanlog ppc: Clean up rtas_flash driver somewhat hostap: proc: Use remove_proc_subtree() drm: proc: Use remove_proc_subtree() drm: proc: Use minor->index to label things, not PDE->name drm: Constify drm_proc_list[] zoran: Don't print proc_dir_entry data in debug reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show() proc: Supply an accessor for getting the data from a PDE's parent airo: Use remove_proc_subtree() rtl8192u: Don't need to save device proc dir PDE rtl8187se: Use a dir under /proc/net/r8180/ proc: Add proc_mkdir_data() proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h} proc: Move PDE_NET() to fs/proc/proc_net.c ...
2013-05-01proc: Supply a function to remove a proc entry by PDEDavid Howells1-17/+4
Supply a function (proc_remove()) to remove a proc entry (and any subtree rooted there) by proc_dir_entry pointer rather than by name and (optionally) root dir entry pointer. This allows us to eliminate all remaining pde->name accesses outside of procfs. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Grant Likely <grant.likely@linaro.or> cc: linux-acpi@vger.kernel.org cc: openipmi-developer@lists.sourceforge.net cc: devicetree-discuss@lists.ozlabs.org cc: linux-pci@vger.kernel.org cc: netdev@vger.kernel.org cc: netfilter-devel@vger.kernel.org cc: alsa-devel@alsa-project.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-30Merge tag 'pm+acpi-3.10-rc1' of ↵Linus Torvalds66-1779/+3440
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI updates from Rafael J Wysocki: - ARM big.LITTLE cpufreq driver from Viresh Kumar. - exynos5440 cpufreq driver from Amit Daniel Kachhap. - cpufreq core cleanup and code consolidation from Viresh Kumar and Stratos Karafotis. - cpufreq scalability improvement from Nathan Zimmer. - AMD "frequency sensitivity feedback" powersave bias for the ondemand cpufreq governor from Jacob Shin. - cpuidle code consolidation and cleanups from Daniel Lezcano. - ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano. - ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto. - ACPI core updates related to hotplug from Toshi Kani, Paul Bolle, Yasuaki Ishimatsu, and Rafael J Wysocki. - Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from Rafael J Wysocki and Andy Shevchenko. * tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits) cpufreq: Revert incorrect commit 5800043 cpufreq: MAINTAINERS: Add co-maintainer cpuidle: add maintainer entry ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points ARM: s3c64xx: cpuidle: use init/exit common routine cpufreq: pxa2xx: initialize variables ACPI: video: correct acpi_video_bus_add error processing SH: cpuidle: use init/exit common routine ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y ACPI: Fix wrong parameter passed to memblock_reserve cpuidle: fix comment format pnp: use %*phC to dump small buffers isapnp: remove debug leftovers ARM: imx: cpuidle: use init/exit common routine ARM: davinci: cpuidle: use init/exit common routine ARM: kirkwood: cpuidle: use init/exit common routine ARM: calxeda: cpuidle: use init/exit common routine ARM: tegra: cpuidle: use init/exit common routine for tegra3 ARM: tegra: cpuidle: use init/exit common routine for tegra2 ARM: OMAP4: cpuidle: use init/exit common routine ...
2013-04-29Merge tag 'pci-v3.10-changes' of ↵Linus Torvalds3-194/+25
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "PCI changes for the v3.10 merge window: PCI device hotplug - Remove ACPI PCI subdrivers (Jiang Liu, Myron Stowe) - Make acpiphp builtin only, not modular (Jiang Liu) - Add acpiphp mutual exclusion (Jiang Liu) Power management - Skip "PME enabled/disabled" messages when not supported (Rafael Wysocki) - Fix fallback to PCI_D0 (Rafael Wysocki) Miscellaneous - Factor quirk_io_region (Yinghai Lu) - Cache MSI capability offsets & cleanup (Gavin Shan, Bjorn Helgaas) - Clean up EISA resource initialization and logging (Bjorn Helgaas) - Fix prototype warnings (Andy Shevchenko, Bjorn Helgaas) - MIPS: Initialize of_node before scanning bus (Gabor Juhos) - Fix pcibios_get_phb_of_node() declaration "weak" annotation (Gabor Juhos) - Add MSI INTX_DISABLE quirks for AR8161/AR8162/etc (Xiong Huang) - Fix aer_inject return values (Prarit Bhargava) - Remove PME/ACPI dependency (Andrew Murray) - Use shared PCI_BUS_NUM() and PCI_DEVID() (Shuah Khan)" * tag 'pci-v3.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (63 commits) vfio-pci: Use cached MSI/MSI-X capabilities vfio-pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK PCI: Remove "extern" from function declarations PCI: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK PCI: Drop msi_mask_reg() and remove drivers/pci/msi.h PCI: Use msix_table_size() directly, drop multi_msix_capable() PCI: Drop msix_table_offset_reg() and msix_pba_offset_reg() macros PCI: Drop is_64bit_address() and is_mask_bit_support() macros PCI: Drop msi_data_reg() macro PCI: Drop msi_lower_address_reg() and msi_upper_address_reg() macros PCI: Drop msi_control_reg() macro and use PCI_MSI_FLAGS directly PCI: Use cached MSI/MSI-X offsets from dev, not from msi_desc PCI: Clean up MSI/MSI-X capability #defines PCI: Use cached MSI-X cap while enabling MSI-X PCI: Use cached MSI cap while enabling MSI interrupts PCI: Remove MSI/MSI-X cap check in pci_msi_check_device() PCI: Cache MSI/MSI-X capability offsets in struct pci_dev PCI: Use u8, not int, for PM capability offset [SCSI] megaraid_sas: Use correct #define for MSI-X capability PCI: Remove "extern" from function declarations ...
2013-04-28Merge branch 'pm-cpuidle'Rafael J. Wysocki1-1/+0
* pm-cpuidle: (51 commits) cpuidle: add maintainer entry ARM: s3c64xx: cpuidle: use init/exit common routine SH: cpuidle: use init/exit common routine cpuidle: fix comment format ARM: imx: cpuidle: use init/exit common routine ARM: davinci: cpuidle: use init/exit common routine ARM: kirkwood: cpuidle: use init/exit common routine ARM: calxeda: cpuidle: use init/exit common routine ARM: tegra: cpuidle: use init/exit common routine for tegra3 ARM: tegra: cpuidle: use init/exit common routine for tegra2 ARM: OMAP4: cpuidle: use init/exit common routine ARM: shmobile: cpuidle: use init/exit common routine ARM: tegra: cpuidle: use init/exit common routine ARM: OMAP3: cpuidle: use init/exit common routine ARM: at91: cpuidle: use init/exit common routine ARM: ux500: cpuidle: use init/exit common routine cpuidle: make a single register function for all ARM: ux500: cpuidle: replace for_each_online_cpu by for_each_possible_cpu cpuidle: remove en_core_tk_irqen flag ARM: OMAP3: remove cpuidle_wrap_enter ...
2013-04-28Merge branch 'acpi-assorted'Rafael J. Wysocki13-154/+243
* acpi-assorted: (21 commits) ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points ACPI: video: correct acpi_video_bus_add error processing ACPI: Fix wrong parameter passed to memblock_reserve acpi: video: enhance the quirk detect logic of _BQC ACPI: update comments for acpi_event_status ACPI: remove "config ACPI_DEBUG_FUNC_TRACE" PCI / ACPI: Don't query OSC support with all possible controls ACPI / processor_thermal: avoid null pointer deference error ACPI / fan: avoid null pointer deference error ACPI / video: Fix applying indexed initial brightness value. ACPI / video: Make logic a little easier to understand. ACPI / video: Fix brightness control initialization for some laptops. ACPI: Use resource_size() in osl.c ACPI / acpi_pad: Used PTR_RET ACPI: suppress compiler warning in container.c ACPI: suppress compiler warning in battery.c ACPI: suppress compiler warnings in processor_throttling.c ACPI: suppress compiler warnings in button.c ACPI: replace kmalloc+memcpy with kmemdup ACPI: Remove acpi_pci_bind_root() definition ...
2013-04-28Merge branch 'acpi-pm'Rafael J. Wysocki2-34/+63
* acpi-pm: ACPI / PM: Expose lists of device wakeup power resources to user space ACPI / PM: Fix potential problem in acpi_device_get_power()
2013-04-28Merge branch 'acpica'Rafael J. Wysocki42-971/+2292
* acpica: (33 commits) ACPICA: Update version to 20130328 ACPICA: Add a lock to the internal object reference count mechanism ACPICA: Fix a format string for 64-bit generation ACPICA: Remove FORCE_DELETE option for global reference count mechanism ACPICA: Improve error message for Index() operator ACPICA: FADT: Remove extraneous warning for very large GPE registers ACPICA: Fix a typo in a function header, no functional change ACPICA: Fix a typo in an error message ACPICA: Fix for some comments/headers ACPICA: _OSI Support: handle any errors from acpi_os_acquire_mutex() ACPICA: Predefine names: Add allowed argument types to master info table ACPI: Set length even for TYPE_END_TAG acpi resource ACPICA: Update version to 20130214 ACPICA: Object repair: Allow 0-length packages for variable-length packages ACPICA: Disassembler: Add warnings for unresolved control methods ACPICA: Return object repair: Add resource template repairs ACPICA: Return object repair: Add string-to-unicode conversion ACPICA: Split object conversion functions to a new file ACPICA: Add mechanism for early object repairs on a per-name basis ACPICA: Remove trailing comma in enum declarations ...
2013-04-28Merge branch 'acpi-lpss'Rafael J. Wysocki5-38/+304
* acpi-lpss: ACPI / LPSS: make code less confusing for reader ACPI / LPSS: Add support for exposing LTR registers to user space ACPI / scan: Add special handler for Intel Lynxpoint LPSS devices
2013-04-28Merge branch 'acpi-hotplug'Rafael J. Wysocki8-581/+538
* acpi-hotplug: ACPI / memhotplug: Remove info->failed bit ACPI / memhotplug: set info->enabled for memory present at boot time ACPI: Verify device status after eject acpi: remove reference to ACPI_HOTPLUG_IO ACPI: Update _OST handling for notify ACPI: Update PNPID match handling for notify ACPI: Update PNPID set/free interfaces ACPI: Remove acpi_device dependency in acpi_device_set_id() ACPI / hotplug: Make acpi_hotplug_profile_ktype static ACPI / scan: Make memory hotplug driver use struct acpi_scan_handler ACPI / container: Use hotplug profile user space interface ACPI / hotplug: Introduce user space interface for hotplug profiles ACPI / scan: Introduce acpi_scan_handler_matching() ACPI / container: Use common hotplug code ACPI / scan: Introduce common code for ACPI-based device hotplug ACPI / scan: Introduce acpi_scan_match_handler()
2013-04-26ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip ↵Zhang Rui1-3/+13
points Commit 4ae46be "Thermal: Introduce thermal_zone_trip_update()" introduced a regression causing the fan to be always on even when the system is idle. My original idea in that commit is that: - when the current temperature is above the trip point, keep the fan on, even if the temperature is dropping. - when the current temperature is below the trip point, turn on the fan when the temperature is raising, turn off the fan when the temperature is dropping. But this is what the code actually does: - when the current temperature is above the trip point, the fan keeps on. - when the current temperature is below the trip point, the fan is always on because thermal_get_trend() in driver/acpi/thermal.c returns THERMAL_TREND_RAISING. Thus the fan keeps running even if the system is idle. Fix this in drivers/acpi/thermal.c. [rjw: Changelog] References: https://bugzilla.kernel.org/show_bug.cgi?id=56591 References: https://bugzilla.kernel.org/show_bug.cgi?id=56601 References: https://bugzilla.kernel.org/show_bug.cgi?id=50041#c45 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Matthias <morpheusxyz123@yahoo.de> Tested-by: Ville Syrjälä <syrjala@sci.fi> Cc: 3.7+ <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-25ACPI: video: correct acpi_video_bus_add error processingAaron Lu1-77/+66
acpi_video_bus_get_devices() may fail due to some video output device doesn't have the _ADR method, and in this case, the error processing is to simply free the video structure in acpi_video_bus_add(), while leaving those already registered video output devices in the wild, which means for some video output device, we have already registered a backlight interface and installed a notification handler for it. So it can happen when user is using this system, on hotkey pressing, the notification handler will send a keycode through a non-existing input device, causing kernel freeze. To solve this problem, free all those already registered video output devices once something goes wrong in acpi_video_bus_get_devices(), so that no wild backlight interfaces and notification handlers exist. References: https://bugzilla.kernel.org/show_bug.cgi?id=51731 Reported-and-tested-by: <i-tek@web.de> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-24ACPI: Fix wrong parameter passed to memblock_reserveWang YanQing1-1/+1
Commit 53aac44 (ACPI: Store valid ACPI tables passed via early initrd in reserved memblock areas) introduced acpi_initrd_override() that passes a wrong value as the second argument to memblock_reserve(). Namely, the second argument of memblock_reserve() is the size of the region, not the address of the top of it, so make acpi_initrd_override() pass the size in there as appropriate. [rjw: Changelog] Signed-off-by: Wang YanQing <udknight@gmail.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Cc: 3.8+ <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-23cpuidle: remove en_core_tk_irqen flagDaniel Lezcano1-1/+0
The en_core_tk_irqen flag is set in all the cpuidle driver which means it is not necessary to specify this flag. Remove the flag and the code related to it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> # for mach-omap2/* Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-22acpi: video: enhance the quirk detect logic of _BQCAaron Lu1-10/+57
Currently we decide if the _BQC is using index by first setting the level to maximum, and then check if _BQC returned maximum; if not, we say it is using index. This is not true for some buggy systems, where the _BQC method will always return a constant value(e.g. 0 or 100 for the two broken system) and thus break the current logic. So this patch tries to enhance the quirk detect logic for _BQC: we do this by picking a test_level, it can be the maximum level or the mininum one based on some condition. And we don't make the assumption that if _BQC returned a value that is not what we just set, it must be using an index. Instead, we will compare the value returned from _BQC and if it doesn't match, see if the returned value is an index. And if still no, clear the capability of _BQC. References: https://bugzilla.kernel.org/show_bug.cgi?id=42861 References: https://bugzilla.kernel.org/show_bug.cgi?id=56011 Reported-and-tested-by: Artem Savkov <artem.savkov@gmail.com> Reported-by: Luis Medinas <lmedinas@gmail.com> Reported-by: Cheppes <cheppes@mailinator.com> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-16PCI/ACPI: Remove support of ACPI PCI subdriversMyron Stowe1-47/+1
Both sub-drivers of the "PCI Root Bridge ("pci_bridge")" driver, "acpiphp" and "pci_slot", have been converted to hook directly into the PCI core. With the conversions there are no remaining usages of the 'struct acpi_pci_driver' list based infrastructure. This patch removes it. Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com>
2013-04-12PCI/ACPI: Handle PCI slot devices when creating/destroying PCI busesJiang Liu2-147/+24
Currently the pci_slot driver doesn't update PCI slot devices when PCI device hotplug event happens, which may cause memory leak and returning stale information to user. Now the pci_slot driver has been changed as built-in driver, so invoke PCI slot enumeration and destroy routines directly from the PCI core. And remove ACPI PCI sub-driver related code because it isn't needed any more. [bhelgas: removed "extern" from function declarations] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com>
2013-04-12ACPICA: Add a lock to the internal object reference count mechanismBob Moore3-35/+57
Certain external interfaces need to update object references without holding the interpreter or namespace mutex objects. To prevent race conditions, add a spinlock around the increment and decrement of the reference counts for internal ACPI objects. Reported by Andriy Gapon (avg@FreeBSD.org). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Andriy Gapon <avg@FreeBSD.org> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Fix a format string for 64-bit generationBob Moore1-1/+2
Fix a warning on 64-bit for a length value. Cast to 32-bit since the length is related to an ACPI table. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Remove FORCE_DELETE option for global reference count mechanismBob Moore2-14/+3
This option is not used and is obsolete. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Improve error message for Index() operatorBob Moore1-4/+6
For the case where an attempt is made to take an Index() beyond the end of a String, Buffer, or Package, emit the actual length of the object to the error message. Helpful for debugging. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: FADT: Remove extraneous warning for very large GPE registersLinn Crosetto1-0/+4
This change removes a size mismatch warning if the legacy length field for a GPE register set is larger than the 64-bit GAS structure can accomodate. GPE register sets can be larger than the 255 bit limitation of the GAS structure. Linn Crosetto (linn@hp.com). Signed-off-by: Linn Crosetto <linn@hp.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Fix a typo in a function header, no functional changeColin Ian King1-1/+1
Reported by Colin King. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Fix a typo in an error messageColin Ian King1-1/+1
Remove an extraneous minus/dash. Reported by Colin Ian King. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Fix for some comments/headersTang Chen1-10/+12
No functional change. Includes parameter rename from Tang Chen. Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: _OSI Support: handle any errors from acpi_os_acquire_mutex()Jung-uk Kim3-11/+34
Check for any errors. Handles possible timeout case if ACPI_WAIT_FOREVER is changed to be less than "forever". Jung-uk Kim. Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Predefine names: Add allowed argument types to master info tableBob Moore8-513/+1361
This change adds the infrastructure to enable typechecking on incoming arguments for the predefined methods/objects. It does not actually contain the code that will fully utilize this information. Also condenses some duplicate code for the predefined names into a new module, utilities/utpredef.c Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-11ACPI / PM: Expose lists of device wakeup power resources to user spaceRafael J. Wysocki1-19/+39
Commit 18a3870 (ACPI / PM: Expose lists of device power resources to user space) exposed the lists of ACPI power resources associated with power states of ACPI devices, but it didn't expose the lists of ACPI wakeup power resources, which also is necessary to get the full picture of dependencies between ACPI devices and power resources. For this reason, for every ACPI device node having a list of ACPI wakeup power resources associated with it, expose that list to user space in analogy with commit 18a3870. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-09procfs: new helper - PDE_DATA(inode)Al Viro5-9/+9
The only part of proc_dir_entry the code outside of fs/proc really cares about is PDE(inode)->data. Provide a helper for that; static inline for now, eventually will be moved to fs/proc, along with the knowledge of struct proc_dir_entry layout. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-08ACPI: remove "config ACPI_DEBUG_FUNC_TRACE"Paul Bolle1-8/+0
Kconfig symbol ACPI_DEBUG_FUNC_TRACE was only used (through its corresponding macro) in drivers/acpi/acpica/acmacros.h. That macro was removed from that header in v3.8, with commit 86ff0e508f88eda6e479a897476026055831d2d8 ("ACPICA: Fix unmerged acmacros.h divergences."), so ACPI_DEBUG_FUNC_TRACE can now be removed too, as it is unused. [rjw: Changelog] Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-08Merge branch 'acpi-assorted' into linux-nextRafael J. Wysocki11-56/+107
* acpi-assorted: PCI / ACPI: Don't query OSC support with all possible controls ACPI / processor_thermal: avoid null pointer deference error ACPI / fan: avoid null pointer deference error ACPI / video: Fix applying indexed initial brightness value. ACPI / video: Make logic a little easier to understand. ACPI / video: Fix brightness control initialization for some laptops. ACPI: Use resource_size() in osl.c ACPI / acpi_pad: Used PTR_RET ACPI: suppress compiler warning in container.c ACPI: suppress compiler warning in battery.c ACPI: suppress compiler warnings in processor_throttling.c ACPI: suppress compiler warnings in button.c ACPI: replace kmalloc+memcpy with kmemdup ACPI: Remove acpi_pci_bind_root() definition ACPI video: ignore BIOS backlight value for HP dm4
2013-04-08Merge branch 'acpi-pm' into linux-nextRafael J. Wysocki1-15/+24
* acpi-pm: ACPI / PM: Fix potential problem in acpi_device_get_power()
2013-04-08Merge branch 'acpica' into linux-nextRafael J. Wysocki31-400/+830
* acpica: (22 commits) ACPI: Set length even for TYPE_END_TAG acpi resource ACPICA: Update version to 20130214 ACPICA: Object repair: Allow 0-length packages for variable-length packages ACPICA: Disassembler: Add warnings for unresolved control methods ACPICA: Return object repair: Add resource template repairs ACPICA: Return object repair: Add string-to-unicode conversion ACPICA: Split object conversion functions to a new file ACPICA: Add mechanism for early object repairs on a per-name basis ACPICA: Remove trailing comma in enum declarations ACPICA: Add exception descriptions to exception info table ACPICA: Add macros to exception code definitions ACPICA: Regression fix: reinstate safe exit macros ACPICA: Update for ACPI 5 hardware-reduced feature ACPICA: Add parens within macros around parameter names ACPICA: Add macros to access pointer to next object in the descriptor list ACPICA: Update error/debug messages for fixed events ACPICA: Fix a long-standing bug in local cache ACPICA: iASL/Disassembler: Add support for MTMR table ACPICA: iASL/Disassembler: Add support for VRTC table ACPICA: Update RASF table definition ...
2013-04-08Merge branch 'acpi-lpss' into linux-nextRafael J. Wysocki5-38/+304
* acpi-lpss: ACPI / LPSS: make code less confusing for reader ACPI / LPSS: Add support for exposing LTR registers to user space ACPI / scan: Add special handler for Intel Lynxpoint LPSS devices
2013-04-08Merge branch 'acpi-hotplug' into linux-nextRafael J. Wysocki8-581/+538
* acpi-hotplug: ACPI / memhotplug: Remove info->failed bit ACPI / memhotplug: set info->enabled for memory present at boot time ACPI: Verify device status after eject acpi: remove reference to ACPI_HOTPLUG_IO ACPI: Update _OST handling for notify ACPI: Update PNPID match handling for notify ACPI: Update PNPID set/free interfaces ACPI: Remove acpi_device dependency in acpi_device_set_id() ACPI / hotplug: Make acpi_hotplug_profile_ktype static ACPI / scan: Make memory hotplug driver use struct acpi_scan_handler ACPI / container: Use hotplug profile user space interface ACPI / hotplug: Introduce user space interface for hotplug profiles ACPI / scan: Introduce acpi_scan_handler_matching() ACPI / container: Use common hotplug code ACPI / scan: Introduce common code for ACPI-based device hotplug ACPI / scan: Introduce acpi_scan_match_handler()
2013-04-05Merge tag 'pci-v3.9-fixes-1' of ↵Linus Torvalds1-39/+37
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "PCI updates for v3.9: ASPM Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus" kexec PCI: Don't try to disable Bus Master on disconnected PCI devices Platform ROM images PCI: Add PCI ROM helper for platform-provided ROM images nouveau: Attempt to use platform-provided ROM image radeon: Attempt to use platform-provided ROM image Hotplug PCI/ACPI: Always resume devices on ACPI wakeup notifications PCI/PM: Disable runtime PM of PCIe ports EISA EISA/PCI: Fix bus res reference EISA/PCI: Init EISA early, before PNP" * tag 'pci-v3.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI/PM: Disable runtime PM of PCIe ports PCI/ACPI: Always resume devices on ACPI wakeup notifications PCI: Don't try to disable Bus Master on disconnected PCI devices Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus" radeon: Attempt to use platform-provided ROM image nouveau: Attempt to use platform-provided ROM image EISA/PCI: Init EISA early, before PNP EISA/PCI: Fix bus res reference PCI: Add PCI ROM helper for platform-provided ROM images
2013-04-03ACPI / BGRT: Don't let users configure BGRT on non X86 systemsTony Luck1-1/+1
Fengguang Wu's 0-Day kernel build testing backend found the following build error for an allmodconfig build on ia64: drivers/built-in.o: In function `show_yoffset': >> bgrt.c:(.text+0xe5a71): undefined reference to `bgrt_tab' >> bgrt.c:(.text+0xe5a91): undefined reference to `bgrt_tab' drivers/built-in.o: In function `show_xoffset': >> bgrt.c:(.text+0xe5b51): undefined reference to `bgrt_tab' >> bgrt.c:(.text+0xe5b71): undefined reference to `bgrt_tab' drivers/built-in.o: In function `show_type': >> bgrt.c:(.text+0xe5c31): undefined reference to `bgrt_tab' drivers/built-in.o:bgrt.c:(.text+0xe5c51): more undefined references to `bgrt_tab' follow drivers/built-in.o: In function `bgrt_init': bgrt.c:(.init.text+0x8931): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8932): undefined reference to `bgrt_image_size' bgrt.c:(.init.text+0x8950): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8960): undefined reference to `bgrt_image_size' The problem is that all these undefined names are provided by arch/x86/platform/efi/efi-bgrt.c - which is obviously not available to the ia64 build. It doesn't seem useful to provide the BGRT support for Itanium (many systems are headless and have no graphics at all). So just don't let users configure this driver on non-X86 machines. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-02Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"Bjorn Helgaas1-39/+37
This reverts commit 8c33f51df406e1a1f7fa4e9b244845b7ebd61fa6. Conflicts: drivers/acpi/pci_root.c This commit broke some pre-1.1 PCIe devices by leaving them with ASPM enabled. Previously, we had disabled ASPM on these devices because many of them don't implement it correctly (per 149e1637). Requesting _OSC control early means that aspm_disabled may be set before we scan the PCI bus and configure link ASPM state. But the ASPM configuration currently skips the check for pre-PCIe 1.1 devices when aspm_disabled is set, like this: acpi_pci_root_add acpi_pci_osc_support if (flags != base_flags) pcie_no_aspm aspm_disabled = 1 pci_acpi_scan_root ... pcie_aspm_init_link_state pcie_aspm_sanity_check if (!aspm_disabled) /* check for pre-PCIe 1.1 device */ Therefore, setting aspm_disabled early means that we leave ASPM enabled on these pre-PCIe 1.1 devices, which is a regression for some devices. The best fix would be to clean up the ASPM init so we can evaluate _OSC before scanning the bug (that way boot-time and hot-add discovery will work the same), but that requires significant rework. For now, we'll just revert the _OSC change as the lowest-risk fix. Reference: https://bugzilla.kernel.org/show_bug.cgi?id=55211 Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Yinghai Lu <yinghai@kernel.org> CC: stable@vger.kernel.org # v3.8+
2013-04-02cpuidle / ACPI: recover percpu ACPI processor cstateAlex Shi1-6/+7
Commit ac3ebafa81af76d6 "ACPI / idle: remove usage of the statedata" changed the percpu processor cstate to a unified cstate in ACPI idle. That caused all our NHM boxes to boot hang or panic. 2178751 Task dump for CPU 1: 2178752 swapper/1 R running task 6736 0 1 0x00000000 2178753 ffff8801e8029dc8 ffffffff8101cf96 ffff8801e8029e28 ffffffff813d294b 2178754 0000000000000f99 0000000000000003 00000000003cf654 0000000025c17d03 2178755 ffff8801e8029e38 ffff8801e74fc000 00000002590dc5c4 ffffffff8163cdb0 2178756 Call Trace: 2178757 [<ffffffff8101cf96>] ? acpi_processor_ffh_cstate_enter+0x2d/0x2f 2178758 [<ffffffff813d294b>] acpi_idle_enter_bm+0x1b1/0x236 2178759 [<ffffffff8163cdb0>] ? disable_cpuidle+0x10/0x10 2178760 [<ffffffff8163cdc2>] cpuidle_enter+0x12/0x14 2178761 [<ffffffff8163d286>] cpuidle_wrap_enter+0x2f/0x6d 2178762 [<ffffffff8163d2d4>] cpuidle_enter_tk+0x10/0x12 2178763 [<ffffffff8163cdd6>] cpuidle_enter_state+0x12/0x3a 2178764 [<ffffffff8163d4a7>] cpuidle_idle_call+0xe8/0x161 2178765 [<ffffffff81008d99>] cpu_idle+0x5e/0xa4 2178766 [<ffffffff8174c6c1>] start_secondary+0x1a9/0x1ad 2178767 Task dump for CPU 2: In fact, the ACPI idle is based on the assumption of difference percpu cstate structures that are necessary for the implementation to work cprrectly. A unique acpi_processor_cx is not sifficient by far. This patch is just a quick fix re-introducing the percpu cstates. If someone really wants to unify the ACPI cstates, please make sure that the whole software infrastructure is changed and take hardware as well as many different kinds of BIOS settings into account. [rjw: Changelog] Reported-by: LKP project <lkp@linux.intel.com> Reported-by: Xie ChanglongX <changlongx.xie@intel.com> Tested-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-02ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()Rafael J. Wysocki1-1/+1
The ACPI handle of struct i2c_adapter's dev member should not be set, because this causes that struct i2c_adapter to be associated with the ACPI device node corresponding to its parent as the second "physical_device", which is incorrect (this happens during the registration of struct i2c_adapter). Consequently, acpi_i2c_register_devices() should use the ACPI handle of the parent of the struct i2c_adapter it is called for rather than the struct i2c_adapter's ACPI handle (which should be NULL). Make that happen and modify the i2c-designware-platdrv driver, which currently is the only driver for ACPI-enumerated I2C controller chips, not to set the ACPI handle for the struct i2c_adapter it creates. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Wolfram Sang <wsa@the-dreams.de>
2013-03-30PCI / ACPI: Don't query OSC support with all possible controlsYinghai Lu1-2/+2
Found problem on system that firmware that could handle pci aer. Firmware get error reporting after pci injecting error, before os boots. But after os boots, firmware can not get report anymore, even pci=noaer is passed. Root cause: BIOS _OSC has problem with query bit checking. It turns out that BIOS vendor is copying example code from ACPI Spec. In ACPI Spec 5.0, page 290: If (Not(And(CDW1,1))) // Query flag clear? { // Disable GPEs for features granted native control. If (And(CTRL,0x01)) // Hot plug control granted? { Store(0,HPCE) // clear the hot plug SCI enable bit Store(1,HPCS) // clear the hot plug SCI status bit } ... } When Query flag is set, And(CDW1,1) will be 1, Not(1) will return 0xfffffffe. So it will get into code path that should be for control set only. BIOS acpi code should be changed to "If (LEqual(And(CDW1,1), 0)))" Current kernel code is using _OSC query to notify firmware about support from OS and then use _OSC to set control bits. During query support, current code is using all possible controls. So will execute code that should be only for control set stage. That will have problem when pci=noaer or aer firmware_first is used. As firmware have that control set for os aer already in query support stage, but later will not os aer handling. We should avoid passing all possible controls, just use osc_control_set instead. That should workaround BIOS bugs with affected systems on the field as more bios vendors are copying sample code from ACPI spec. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: stable@vger.kernel.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-03-27PCI / ACPI: hold acpi_scan_lock during root bus hotplugYinghai Lu1-2/+7
During merging the PCI tree with the PM/ACPI tree, Linus noticed that we don't use the same lock using patten about ACPI PCI root as acpiphp. Here apply the same locking patten, and we need to execute acpi_bus_hot_remove_device() via acpi_os_hotplug_execute() as it also holds acpi_scan_lock. [rjw: Changelog] Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> No-objection-from: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-03-27ACPI / APEI: fix error status check condition for CPERChen Gong1-1/+1
In Table 18-289, ACPI5.0 SPEC, the error data length in CPER Generic Error Data Entry can be 0, which means this generic error data entry can have only one header. So fix the check conditon for it. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Reviewed-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-03-27ACPI / PM: fix suspend and resume on Sony Vaio VGN-FW21MFabio Valentini1-0/+8
Add Sony Vaio VGN-FW21M to the device blacklist in drivers/acpi/sleep.c. Fixes suspend/resume on this device (device no longer reboots instead of resuming). References: https://bugzilla.kernel.org/show_bug.cgi?id=55001 Signed-off-by: Fabio Valentini <fafatheone@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-03-25ACPI / processor_thermal: avoid null pointer deference errorColin Ian King1-6/+18
Fix a null pointer deference by acpi_driver_data() if device is null. We should only set pr and check this is OK after we are sure device is not null. Smatch analysis: drivers/acpi/processor_thermal.c:223 processor_get_max_state() warn: variable dereferenced before check 'device' (see line 221) drivers/acpi/processor_thermal.c:237 processor_get_cur_state() warn: variable dereferenced before check 'device' (see line 235) drivers/acpi/processor_thermal.c:255 processor_set_cur_state() warn: variable dereferenced before check 'device' (see line 251) Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-03-25ACPI / fan: avoid null pointer deference errorColin Ian King1-2/+6
Fix a null pointer deference by acpi_driver_data() if device is null. We should only set cdev and check this is OK after we are sure device is not null. Smatch analysis: drivers/acpi/fan.c:179 acpi_fan_remove() warn: variable dereferenced before check 'device' (see line 177) Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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