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2015-02-15Merge tag 'char-misc-3.20-rc1' of ↵Linus Torvalds21-186/+418
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc patches from Greg KH: "Here's the big char/misc driver update for 3.20-rc1. Lots of little things in here, all described in the changelog. Nothing major or unusual, except maybe the binder selinux stuff, which was all acked by the proper selinux people and they thought it best to come through this tree. All of this has been in linux-next with no reported issues for a while" * tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits) coresight: fix function etm_writel_cp14() parameter order coresight-etm: remove check for unknown Kconfig macro coresight: fixing CPU hwid lookup in device tree coresight: remove the unnecessary function coresight_is_bit_set() coresight: fix the debug AMBA bus name coresight: remove the extra spaces coresight: fix the link between orphan connection and newly added device coresight: remove the unnecessary replicator property coresight: fix the replicator subtype value pdfdocs: Fix 'make pdfdocs' failure for 'uio-howto.tmpl' mcb: Fix error path of mcb_pci_probe virtio/console: verify device has config space ti-st: clean up data types (fix harmless memory corruption) mei: me: release hw from reset only during the reset flow mei: mask interrupt set bit on clean reset bit extcon: max77693: Constify struct regmap_config extcon: adc-jack: Release IIO channel on driver remove extcon: Remove duplicated include from extcon-class.c Drivers: hv: vmbus: hv_process_timer_expiration() can be static Drivers: hv: vmbus: serialize Offer and Rescind offer ...
2015-02-11Merge tag 'powerpc-3.20-1' of ↵Linus Torvalds11-26/+898
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc updates from Michael Ellerman: - Update of all defconfigs - Addition of a bunch of config options to modernise our defconfigs - Some PS3 updates from Geoff - Optimised memcmp for 64 bit from Anton - Fix for kprobes that allows 'perf probe' to work from Naveen - Several cxl updates from Ian & Ryan - Expanded support for the '24x7' PMU from Cody & Sukadev - Freescale updates from Scott: "Highlights include 8xx optimizations, some more work on datapath device tree content, e300 machine check support, t1040 corenet error reporting, and various cleanups and fixes" * tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (102 commits) cxl: Add missing return statement after handling AFU errror cxl: Fail AFU initialisation if an invalid configuration record is found cxl: Export optional AFU configuration record in sysfs powerpc/mm: Warn on flushing tlb page in kernel context powerpc/powernv: Add OPAL soft-poweroff routine powerpc/perf/hv-24x7: Document sysfs event description entries powerpc/perf/hv-gpci: add the remaining gpci requests powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated powerpc/perf/hv-24x7: parse catalog and populate sysfs with events perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper perf: add PMU_EVENT_ATTR_STRING() helper perf: provide sysfs_show for struct perf_pmu_events_attr powerpc/kernel: Avoid initializing device-tree pointer twice powerpc: Remove old compile time disabled syscall tracing code powerpc/kernel: Make syscall_exit a local label cxl: Fix device_node reference counting powerpc/mm: bail out early when flushing TLB page powerpc: defconfigs: add MTD_SPI_NOR (new dependency for M25P80) perf/powerpc: reset event hw state when adding it to the PMU powerpc/qe: Use strlcpy() ...
2015-02-11Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds1-12/+96
Pull first round of SCSI updates from James Bottomley: "This is the usual grab bag of driver updates (hpsa, storvsc, mp2sas, megaraid_sas, ses) plus an assortment of minor updates. There's also an update to ufs which adds new phy drivers and finally a new logging infrastructure for SCSI" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (114 commits) scsi_logging: return void for dev_printk() functions scsi: print single-character strings with seq_putc scsi: merge consecutive seq_puts calls scsi: replace seq_printf with seq_puts aha152x: replace seq_printf with seq_puts advansys: replace seq_printf with seq_puts scsi: remove SPRINTF macro sg: remove an unused variable hpsa: Use local workqueues instead of system workqueues hpsa: add in P840ar controller model name hpsa: add in gen9 controller model names hpsa: detect and report failures changing controller transport modes hpsa: shorten the wait for the CISS doorbell mode change ack hpsa: refactor duplicated scan completion code into a new routine hpsa: move SG descriptor set-up out of hpsa_scatter_gather() hpsa: do not use function pointers in fast path command submission hpsa: print CDBs instead of kernel virtual addresses for uncommon errors hpsa: do not use a void pointer for scsi_cmd field of struct CommandList hpsa: return failed from device reset/abort handlers hpsa: check for ctlr lockup after command allocation in main io path ...
2015-02-06cxl: Add missing return statement after handling AFU errrorIan Munsie1-0/+1
We were missing a return statement in the PSL interrupt handler in the case of an AFU error, which would trigger an "Unhandled CXL PSL IRQ" warning. We do actually handle these type of errors (by notifying userspace), so add the missing return IRQ_HANDLED so we don't throw unecessary warnings. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-02-06cxl: Fail AFU initialisation if an invalid configuration record is foundIan Munsie1-0/+9
If an AFU claims to have a configuration record but doesn't actually contain a vendor and device ID, fail the AFU initialisation. Right now this is just a way of politely letting AFU developers know that they need to fix their config space, but later on we may expose the AFUs as actual PCI devices in their own right and don't want to inadvertendly expose an AFU with a bad config space. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-02-06cxl: Export optional AFU configuration record in sysfsIan Munsie3-10/+205
An AFU may optionally contain one or more PCIe like configuration records, which can be used to identify the AFU. This patch adds support for exposing the raw config space and the vendor, device and class code under sysfs. These will appear in a subdirectory of the AFU device corresponding with the configuration record number, e.g. cat /sys/class/cxl/afu0.0/cr0/vendor 0x1014 cat /sys/class/cxl/afu0.0/cr0/device 0x4350 cat /sys/class/cxl/afu0.0/cr0/class 0x120000 hexdump -C /sys/class/cxl/afu0.0/cr0/config 00000000 14 10 50 43 00 00 00 00 06 00 00 12 00 00 00 00 |..PC............| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000100 These files behave in much the same way as the equivalent files for PCI devices, with one exception being that the config file is currently read-only and restricted to the root user. It is not necessarily required to be this strict, but we currently do not have a compelling use-case to make it writable and/or world-readable, so I erred on the side of being restrictive. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-02-04vmci: propagate msghdr all way down to __qp_memcpy_to_queue()Al Viro1-8/+8
Switch from passing msg->iov_iter.iov to passing msg itself Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-02-03ti-st: clean up data types (fix harmless memory corruption)Dan Carpenter1-6/+6
The big issue here is: of_property_read_u32(np, "flow_cntrl", (u32 *)&dt_pdata->flow_cntrl); "->flow_cntrl" is a char so when we write a 32 bit number to it then it corrupts past the end of the char. It's probably hard to notice because the struct has padding so the code works on little endian systems. But on a big endian system the code would fail and on a 64 bit, big endian systems then "nshutdown_gpio" and "baud_rate" would be buggy as well. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-03mei: me: release hw from reset only during the reset flowAlexander Usyskin1-2/+1
We might enter the interrupt handler with hw_ready already set, but prior we actually started the reset flow. To soleve this we move the reset release from the interrupt handler to the HW start wait function which is part of the reset sequence. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-03mei: mask interrupt set bit on clean reset bitAlexander Usyskin1-1/+1
We should mask interrupt set bit when writing back hcsr value in reset bit clean-up. This is refinement for mei: clean reset bit before reset commit b13a65ef190e488e2761d65bdd2e1fe8a3a125f5 Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-02cxl: Fix device_node reference countingRyan Grimm1-1/+1
When unbinding and rebinding the driver on a system with a card in PHB0, this error condition is reached after a few attempts: ERROR: Bad of_node_put() on /pciex@3fffe40000000 CPU: 0 PID: 3040 Comm: bash Not tainted 3.18.0-rc3-12545-g3627ffe #152 Call Trace: [c000000721acb5c0] [c00000000086ef94] .dump_stack+0x84/0xb0 (unreliable) [c000000721acb640] [c00000000073a0a8] .of_node_release+0xd8/0xe0 [c000000721acb6d0] [c00000000044bc44] .kobject_release+0x74/0xe0 [c000000721acb760] [c0000000007394fc] .of_node_put+0x1c/0x30 [c000000721acb7d0] [c000000000545cd8] .cxl_probe+0x1a98/0x1d50 [c000000721acb900] [c0000000004845a0] .local_pci_probe+0x40/0xc0 [c000000721acb980] [c000000000484998] .pci_device_probe+0x128/0x170 [c000000721acba30] [c00000000052400c] .driver_probe_device+0xac/0x2a0 [c000000721acbad0] [c000000000522468] .bind_store+0x108/0x160 [c000000721acbb70] [c000000000521448] .drv_attr_store+0x38/0x60 [c000000721acbbe0] [c000000000293840] .sysfs_kf_write+0x60/0xa0 [c000000721acbc50] [c000000000292500] .kernfs_fop_write+0x140/0x1d0 [c000000721acbcf0] [c000000000208648] .vfs_write+0xd8/0x260 [c000000721acbd90] [c000000000208b18] .SyS_write+0x58/0x100 [c000000721acbe30] [c000000000009258] syscall_exit+0x0/0x98 We are missing a call to of_node_get(). pnv_pci_to_phb_node() should call of_node_get() otherwise np's reference count isn't incremented and it might go away. Rename pnv_pci_to_phb_node() to pnv_pci_get_phb_node() so it's clear it calls of_node_get(). Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-25VMCI: Fix two UVA mapping bugsJorgen Hansen2-7/+8
(this is a resend of this patch. Originally sent last year, but post appears to have been lost) This change fixes two bugs in the VMCI host driver related to mapping the notify boolean from user space into kernel space: - the actual UVA was rounded up to the next page boundary - resulting in memory corruption in the calling process whenever notifications would be signalled. This has been fixed by just removing the PAGE_ALIGN part, since get_user_pages_fast can figure this out on its own - the mapped page wasn't stored anywhere, so it wasn't unmapped and put back when a VMCI context was destroyed. Fixed this by remembering the page. Acked-by: Andy King <acking@vmware.com> Acked-by: Darius Davis <darius@vmware.com> Signed-off-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25misc: ti-st: add handling of the signal caseNicholas Mc Guire1-8/+11
if(!wait_for_completion_interruptible_timeout(...)) only handles the timeout case - this patch adds handling the signal case the same as timeout. Only the timeout case was being handled, the signal case (-ERESTARTSYS) was treated just like the case of successful completion, which is most likely not reasonable. read_local_version() is called from download_firmware() where it checks for !=0 return, so the error handling logic should be preserved correctly. download_firmware() is called from st_kim_start() which is checking for !=0 return, so the error handling logic should be preserved correctly Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25mei: add reference counting for me clientsTomas Winkler10-94/+221
To support dynamic addition and removal of me clients we add reference counter. Update kdoc with locking requirements. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-22cxl: Add ability to reset the cardRyan Grimm3-0/+56
Adds reset to sysfs which will PERST the card. If load_image_on_perst is set to "user" or "factory", the PERST will cause that image to be loaded. load_image_on_perst is set to "user" for production. "none" could be used for debugging. The PSL trace arrays are preserved which then can be read through debugfs. PERST also triggers CAPP recovery. An HMI comes in, which is handled by EEH. EEH unbinds the driver, calls into Sapphire to reinitialize the PHB, then rebinds the driver. Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-22cxl: Enable CAPP recoveryRyan Grimm1-1/+7
Turning snoops on is the last step in CAPP recovery. Sapphire is expected to have reinitialized the PHB and done the previous recovery steps. Add mode argument to opal call to do this. Driver can turn snoops off although it does not currently. Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-22cxl: Add image control to sysfsRyan Grimm1-0/+39
load_image_on_perst identifies whether a PERST will cause the image to be flashed to the card. And if so, which image. Valid entries are: "none", "user" and "factory". A value of "none" means PERST will not cause the image to be flashed. A power cycle to the pcie slot is required to load the image. "user" loads the user provided image and "factory" loads the factory image upon PERST. sysfs updates the cxl struct in the driver then calls cxl_update_image_control to write the vals in the VSEC. Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-22cxl: Use image state defaults for reloading FPGARyan Grimm2-2/+41
Select defaults such that a PERST causes flash image reload. Select which image based on what the card is set up to load. CXL_VSEC_PERST_LOADS_IMAGE selects whether PERST assertion causes flash image load. CXL_VSEC_PERST_SELECT_USER selects which image is loaded on the next PERST. cxl_update_image_control writes these bits into the VSEC. Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-22cxl: Add tracepointsIan Munsie8-9/+520
This patch adds tracepoints throughout the cxl driver, which can provide insight into: - Context lifetimes - Commands sent to the PSL and AFU and their completion status - Segment and page table misses and their resolution - PSL and AFU interrupts - slbia calls from the powerpc copro_fault code These tracepoints are mostly intended to aid in debugging (particularly for new AFU designs), and may be useful standalone or in conjunction with hardware traces collected by the PSL (read out via the trace interface in debugfs) and AFUs. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-22cxl: remove redundant increment of hwirqColin Ian King1-1/+1
hwirq has not been initialized, however it is being incremented and also not being referenced in a loop. This error was detected with cppcheck: [drivers/misc/cxl/irq.c:439]: (error) Uninitialized variable: hwirq Commit 80fa93fce37d ("cxl: Name interrupts in /proc/interrupt") introduced this error. This is a simple fix that removes the redundant increment. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-By: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-19Merge 3.19-rc5 into char-misc-nextGreg Kroah-Hartman3-25/+83
We want the 3.19-rc5 fixes in here for our testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-17Merge tag 'char-misc-3.19-rc5' of ↵Linus Torvalds1-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes from Greg KH: "Here are three small driver fixes for reported issues for 3.19-rc5. All of these have been in linux-next for a while with no reported problems" * tag 'char-misc-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: mcb: mcb-pci: Only remap the 1st 0x200 bytes of BAR 0 mei: add ABI documentation for fw_status exported through sysfs mei: clean reset bit before reset
2015-01-12ad525x_dpot-spi: Added Blank lines after declarationsMohammad Jamal1-0/+4
This patch solves the blank line warning of checkpatch.pl Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12ad525x_dpot:Remove break after returnMohammad Jamal1-6/+0
This patch removes the break statements present after return Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12ad525x_dpot: Add a blank line after declarationMohammad Jamal1-0/+1
Added a blank line after declaration to fix the warning of checkpatch.pl Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12GenWQE: remove unnecessary version.h inclusionFabian Frederick2-2/+0
Based on versioncheck. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12misc: ioc4: simplify wave period measurement in clock_calibrateRichard Leitner1-15/+16
The loop for measuring the square wave periods over some cycles is refactored to be more easily readable. This includes avoiding a "by-hand-implemented" for loop with a "real" one and adding some comments. Furthermore the following compiler warning is avoided by this patch: drivers/misc/ioc4.c: In function ‘ioc4_probe’: drivers/misc/ioc4.c:194:16: warning: ‘start’ may be used uninitialized in this function [-Wmaybe-uninitialized] period = (end - start) / ^ drivers/misc/ioc4.c:148:11: note: ‘start’ was declared here uint64_t start, end, period; ^ Signed-off-by: Richard Leitner <dev@g0hl1n.net> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12drivers:misc:ti-st: protect against bad packetsGigi Joseph1-6/+18
We encounter situations where we got bad packet type from the UART (probably due to platform problem or UART driver issues) which caused us out of boundary array access, which eventually led to kernel panic. Signed-off-by: Amir Ayun <amira@ti.com> Signed-off-by: Pavan Savoy <pavan_savoy@ti.com> Signed-off-by: Leonid Iziumtsev <x0153368@ti.com> Signed-off-by: Gigi Joseph <gigi.joseph@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12drivers: misc: ti-st: fix null pointer exception in st_kim_ref()Gigi Joseph1-4/+8
st_kim_ref() does not take care of the fact that platform_get_drvdata() might return NULL. On AM437x EVM, this causes the platform to stop booting as soon as the module is inserted. This patch fixes the issue by checking for NULL return value. Oops log follows. I have not tested BT functionality after this patch. But at least the platform boots now. [ 12.675697] Unable to handle kernel NULL pointer dereference at virtual address 0000005c [ 12.684310] pgd = c0004000 [ 12.687157] [0000005c] *pgd=00000000 [ 12.690927] Internal error: Oops: 17 [#1] SMP ARM [ 12.695873] Modules linked in: btwilink bluetooth ti_vpfe dwc3(+) ov2659 videobuf2_core v4l2_common videodev ti_am335x_adc 6lowpan_iphc matrix_keypad panel_dpi kfifo_buf pixcir_i2c_ts media industrialio videobuf2_dma_contig c_can_platform videobuf2_memops dwc3_omap c_can can_dev [ 12.721969] CPU: 0 PID: 1235 Comm: kworker/u3:0 Not tainted 3.14.25-02445-g9036ac6daed6 #128 [ 12.730937] Workqueue: hci0 hci_power_on [bluetooth] [ 12.736165] task: ebd93b40 ti: ecd7c000 task.ti: ecd7c000 [ 12.741856] PC is at st_kim_ref+0x30/0x40 [ 12.746071] LR is at st_kim_ref+0x30/0x40 [ 12.750289] pc : [<c03caf58>] lr : [<c03caf58>] psr: a0000013 [ 12.750289] sp : ecd7de08 ip : ecd7de08 fp : ecd7de1c [ 12.762365] r10: bf1e710c r9 : bf1e70ec r8 : bf1e7964 [ 12.767858] r7 : ebd2fd50 r6 : bf1e7964 r5 : 00000000 r4 : ecd7de24 [ 12.774723] r3 : c0957208 r2 : 00000000 r1 : c0957208 r0 : 00000000 [ 12.781589] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 12.789274] Control: 10c5387d Table: abde4059 DAC: 00000015 [ 12.795315] Process kworker/u3:0 (pid: 1235, stack limit = 0xecd7c248) Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Gigi Joseph <gigi.joseph@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12drivers: misc: ti-st: fix debugfs creation error handlingGigi Joseph1-5/+1
In case the debugfs creation fails the whole init process was failing. There is no need to do this as the shared transport can work without it. Fix it so it just reports the failure and continue. Signed-off-by: Eyal Reizer <eyalr@ti.com> Signed-off-by: Gigi Joseph <gigi.joseph@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12st_kim: allow suspend if callback is not registeredGigi Joseph1-2/+2
Suspend/resume was failing if callbacks were not registered. As it is ok not to do anything when suspending fix this so it soen't return an error and allow the system to suspend. Signed-off-by: Eyal Reizer <eyalr@ti.com> Signed-off-by: Gigi Joseph <gigi.joseph@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12ti-st: add device tree supportGigi Joseph2-10/+104
When using device tree, driver configuration data need to be read from device node. Add support for getting the platform data information from the device tree information stored in the .dtb file in case it exists. Signed-off-by: Eyal Reizer <eyalr@ti.com> Signed-off-by: bvijay <bvijay@ti.com> Diff rendering mode:inlineside by side Signed-off-by: Gigi Joseph <gigi.joseph@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12mei: use uuid, me_addr tuple addressing also for flow control creditsTomas Winkler1-2/+2
Add uuid, me_addr addressing also for flow control credits. The only exception in cases for single buffer clients for which the host address in flow credits response is always 0 To in order to deal with add/remove race between fw and driver clients addressing we need to use [uuid, me_addr] tuple to address the clients Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12mei: bus: use ssize_t as the return type for send and receiveTomas Winkler2-19/+17
Mei bus receive and send function may return either number of transmitted bytes or errno. It is better to use ssize_t type for that purpose that mixing size_t with int. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12cxl: Fix issues when unmapping contextsIan Munsie2-25/+71
An issue was introduced with "cxl: Unmap MMIO regions when detaching a context" (b123429e6a9e8d03aacf888d23262835f0081448) where closing a context normally could also unmap the problem state area of other contexts currently using the AFU. It was also discovered that after a context's MMIO space had been unmapped it would read 0s when accessing it, whereas the expected behaviour was for the access to fail altogether. In order to address these issues, this patch does two things: - Forced mmap unmapping is only done when we are forcefully detaching all contexts, and not in the normal detach path. Since the normal context close path is tied to the file release any mmaps must have already been released so we don't need to worry in that case. - The mmap path now uses a vm_operations_struct with a fault handler. The fault handler ensures that the context is in started state, otherwise it fails the access attempt with a SIGBUS. Fixes: b123429e6a9e ("cxl: Unmap MMIO regions when detaching a context") Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-09mei: clean reset bit before resetAlexander Usyskin1-0/+12
H_RST bit in H_CSR register may be found lit before reset is started, for example if preceding reset flow hasn't completed. In that case asserting H_RST will be ignored, therefore we need to clean H_RST bit to start a successful reset sequence. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-09ses: Add power_status to SES device slotSong Liu1-0/+38
Add power_status to SES device slot, so we can power on/off the HDDs behind the enclosure. Check firmware status in ses_set_* before sending control pages to firmware. Signed-off-by: Song Liu <songliubraving@fb.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jens Axboe <axboe@fb.com> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2015-01-09ses: add reliable slot attributeDan Williams1-1/+19
The name provided by firmware is in a vendor specific format, publish the slot number to have a reliable mechanism for identifying slots across firmware implementations. If the enclosure does not provide a slot number fallback to the component number which is guaranteed unique, and usually mirrors the slot number. Cleaned up the unused ses_component.desc in the process. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Jens Axboe <axboe@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2015-01-09ses: add enclosure logical idDan Williams1-0/+13
Export the NAA logical id for the enclosure. This is optionally available from the sas_transport_class, but it is really a property of the enclosure. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Jens Axboe <axboe@fb.com> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2015-01-09ses: close potential registration raceDan Williams1-11/+26
The slot and address fields have a small window of instability when userspace can read them before initialization. Separate enclosure_component allocation from registration. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Jens Axboe <axboe@fb.com> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-12-29cxl: Disable SPAP register when freeing SPAIan Munsie1-0/+1
When we deactivate the AFU directed mode we free the scheduled process area, but did not clear the register in the hardware that has a pointer to it. This should be fine since we will have already cleared out every context and we won't do anything that would cause the hardware to access it until after we have allocated a new one, but just to be safe this patch clears out the register when we free the page. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-29cxl: Disable AFU debug flagIan Munsie2-1/+8
Upon inspection of the implementation specific registers, it was discovered that the high bit of the implementation specific RXCTL register was enabled, which enables the DEADB00F debug feature. The debug feature causes MMIO reads to a disabled AFU to respond with 0xDEADB00F instead of all Fs. In general this should not be visible as the kernel will only allow MMIO access to enabled AFUs, but there may be some circumstances where an AFU may become disabled while it is use. One such case would be an AFU designed to only be used in the dedicated process mode and to disable itself after it has completed it's work (however even in that case the effects of this debug flag would be limited as the userspace application must have completed any required MMIO accesses before the AFU disables itself with or without the flag). This patch removes the debug flag and replaces the magic value programmed into this register with a preprocessor define so it is clearer what the rest of this initialisation does. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-29cxl: Early return from cxl_handle_fault for a shut down contextIan Munsie1-0/+6
If a context is being detached and we get a translation fault for it there is little point getting it's mm and handling the fault, so just respond with an address error and return earlier. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-29cxl: Fix leaking interrupts if attach process failsIan Munsie1-1/+3
In this particular error path we have already allocated the AFU interrupts, but have not yet set the status to STARTED. The detach context code will only attempt to release the interrupts if the context is in state STARTED, so in this case the interrupts would remain allocated. This patch releases the AFU interrupts immediately if the attach call fails to prevent them leaking. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-19Merge tag 'powerpc-3.19-2' of ↵Linus Torvalds6-24/+41
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull second batch of powerpc updates from Michael Ellerman: "The highlight is the series that reworks the idle management on powernv, which allows us to use deeper idle states on those machines. There's the fix from Anton for the "BUG at kernel/smpboot.c:134!" problem. An i2c driver for powernv. This is acked by Wolfram Sang, and he asked that we take it through the powerpc tree. A fix for audit from rgb at Red Hat, acked by Paul Moore who is one of the audit maintainers. A patch from Ben to export the symbol map of our OPAL firmware as a sysfs file, so that tools can use it. Also some CXL fixes, a couple of powerpc perf fixes, a fix for smt-enabled, and the patch to add __force to get_user() so we can use bitwise types" * tag 'powerpc-3.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: powerpc/powernv: Ignore smt-enabled on Power8 and later powerpc/uaccess: Allow get_user() with bitwise types powerpc/powernv: Expose OPAL firmware symbol map powernv/powerpc: Add winkle support for offline cpus powernv/cpuidle: Redesign idle states management powerpc/powernv: Enable Offline CPUs to enter deep idle states powerpc/powernv: Switch off MMU before entering nap/sleep/rvwinkle mode i2c: Driver to expose PowerNV platform i2c busses powerpc: add little endian flag to syscall_get_arch() power/perf/hv-24x7: Use kmem_cache_free() instead of kfree powerpc/perf/hv-24x7: Use per-cpu page buffer cxl: Unmap MMIO regions when detaching a context cxl: Add timeout to process element commands cxl: Change contexts_lock to a mutex to fix sleep while atomic bug powerpc: Secondary CPUs must set cpu_callin_map after setting active and online
2014-12-18Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds1-6/+12
Pull virtio fixes from Michael S Tsirkin: "virtio 1.0 related fixes Most importantly, this fixes using virtio_pci as a module. Further, the big virtio 1.0 conversion missed a couple of places. This fixes them up. This isn't 100% sparse-clean yet because on many architectures get_user triggers sparse warnings when used with __bitwise tag (when same tag is on both pointer and value read). I posted a patchset to fix it up by adding __force on all arches that don't already have it (many do), when that's merged these warnings will go away" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio_pci: restore module attributes mic/host: fix up virtio 1.0 APIs vringh: update for virtio 1.0 APIs vringh: 64 bit features tools/virtio: add virtio 1.0 in vringh_test tools/virtio: add virtio 1.0 in virtio_test tools/virtio: enable -Werror tools/virtio: 64 bit features tools/virtio: fix vringh test tools/virtio: more stubs virtio: core support for config generation virtio_pci: add VIRTIO_PCI_NO_LEGACY virtio_pci: move probe to common file virtio_pci_common.h: drop VIRTIO_PCI_NO_LEGACY virtio_config: fix virtio_cread_bytes virtio: set VIRTIO_CONFIG_S_FEATURES_OK on restore
2014-12-15mic/host: fix up virtio 1.0 APIsMichael S. Tsirkin1-6/+12
This just makes code sparse-clean by using new memory access APIs in one file I missed. The new feature bit is not yet negotiated. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-14Merge tag 'char-misc-3.19-rc1' of ↵Linus Torvalds25-165/+411
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver update for 3.19-rc1 Lots of little things all over the place in different drivers, and a new subsystem, "coresight" has been added. Full details are in the shortlog" * tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (73 commits) parport: parport_pc, do not remove parent devices early spmi: Remove shutdown/suspend/resume kernel-doc carma-fpga-program: drop videobuf dependency carma-fpga: drop videobuf dependency carma-fpga-program.c: fix compile errors i8k: Fix temperature bug handling in i8k_get_temp() cxl: Name interrupts in /proc/interrupt CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warning coresight-replicator: remove .owner field for driver coresight: fixed comments in coresight.h coresight: fix typo in comment in coresight-priv.h coresight: bindings for coresight drivers coresight: Adding ABI documentation w1: support auto-load of w1_bq27000 module. w1: avoid potential u16 overflow cn: verify msg->len before making callback mei: export fw status registers through sysfs mei: read and print all six FW status registers mei: txe: add cherrytrail device id mei: kill cached host and me csr values ...
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds8-8/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-14Merge branch 'i2c/for-3.19' of ↵Linus Torvalds1-6/+29
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "For 3.19, the I2C subsystem has to offer special candy this time. Right in time for Christmas :) - I2C slave framework: finally, a generic mechanism for Linux being an I2C slave (if the bus driver supports that). Docs are still missing but will come later this cycle, the code is good enough to go. - I2C muxes represent their topology in sysfs much more detailed. This will help users to navigate around much easier. - irq population of i2c clients is now done at probe time, not device creation time, to have better support for deferred probing. - new drivers for Imagination SCB, Amlogic Meson - DMA support added for Freescale IMX, Renesas SHMobile - slightly bigger driver updates to OMAP, i801, AT91, and rk3x (mostly quirk handling, timing updates, and using better kernel interfaces) - eeprom driver can now write with byte-access (very slow, but OK to have) - and the bunch of smaller fixes, cleanups, ID updates..." * 'i2c/for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (56 commits) i2c: sh_mobile: remove unneeded DMA mask i2c: rcar: add slave support i2c: slave-eeprom: add eeprom simulator driver i2c: core changes for slave support MAINTAINERS: add I2C dt bindings also to I2C realm i2c: designware: Fix falling time bindings doc i2c: davinci: switch to use platform_get_irq Documentation: i2c: Use PM ops instead of legacy suspend/resume i2c: sh_mobile: optimize irq entry i2c: pxa: add support for SCCB devices omap: i2c: don't check bus state IP rev3.3 and earlier i2c: s3c2410: Handle i2c sys_cfg register in i2c driver i2c: rk3x: add Kconfig dependency on COMMON_CLK i2c: omap: add notes related to i2c multimaster mode i2c: omap: don't reset controller if Arbitration Lost detected i2c: omap: implement workaround for handling invalid BB-bit values i2c: omap: cleanup register definitions i2c: rk3x: handle dynamic clock rate changes correctly i2c: at91: enable probe deferring on dma channel request i2c: at91: remove legacy DMA support ...
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