GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
8 years agoMerge branch 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git...
Dave Airlie [Fri, 5 Feb 2016 04:45:44 +0000 (14:45 +1000)]
Merge branch 'exynos-drm-fixes' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes

  Just regression fixes.
   - Fix build warning and error without PM configuration
   - Fix no display issue on Snow board reported by Michal Suchanek,
     http://www.spinics.net/lists/dri-devel/msg99473.html

* 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: dp: Fix panel and bridge lookup logic
  drm: exynos: make PM functions as __maybe_unused
  drm/exynos: fix building without CONFIG_PM_SLEEP

8 years agoMerge branch 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux...
Dave Airlie [Fri, 5 Feb 2016 04:44:16 +0000 (14:44 +1000)]
Merge branch 'drm/adv7511' of git://git./linux/kernel/git/wsa/linux into drm-fixes

misc adv7511 edid reading fixes.

* 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  drm: adv7511: it's HPD, not HDP
  drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile
  drm: adv7511: really enable interrupts for EDID detection

8 years agoMerge tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Fri, 5 Feb 2016 04:43:35 +0000 (14:43 +1000)]
Merge tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel into drm-fixes

misc i915 fixes.

* tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: refine qemu south bridge detection
  drm/i915: Remove select to deleted STOP_MACHINE from Kconfig
  drm/i915: Fix NULL plane->fb oops on SKL
  drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+
  drm/i915/dp: fall back to 18 bpp when sink capability is unknown
  drm/i915: Make sure DC writes are coherent on flush.

8 years agodrm: adv7511: it's HPD, not HDP
Wolfram Sang [Mon, 4 Jan 2016 02:33:47 +0000 (03:33 +0100)]
drm: adv7511: it's HPD, not HDP

Fix this typo, consequently used over both files :)

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Archit Taneja <architt@codeaurora.org>
8 years agodrm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile
Wolfram Sang [Mon, 4 Jan 2016 02:33:46 +0000 (03:33 +0100)]
drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile

This register includes a counter which is decremented by the chip on I2C
failures. Also, it is reset when powering down.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Archit Taneja <architt@codeaurora.org>
8 years agodrm: adv7511: really enable interrupts for EDID detection
Wolfram Sang [Mon, 4 Jan 2016 02:33:45 +0000 (03:33 +0100)]
drm: adv7511: really enable interrupts for EDID detection

The interrupts for EDID_READY or DDC_ERROR were never enabled in this
driver, so reading EDID always timed out when chip was powered down and
interrupts were used. Fix this and also remove clearing the interrupt
flags, they are cleared in POWER_DOWN mode anyhow (unlike the interrupt
enable flags) according to docs and my tests.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Archit Taneja <architt@codeaurora.org>
8 years agodrm/exynos: dp: Fix panel and bridge lookup logic
Javier Martinez Canillas [Fri, 29 Jan 2016 15:09:31 +0000 (12:09 -0300)]
drm/exynos: dp: Fix panel and bridge lookup logic

Commit a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support
for panel") made the Exynos DP DT binding more consistent since the OF
graph could be used to lookup either a panel or a bridge device node.

Before that commit, a panel would be looked up using a phandle and a
bridge using the OF graph which made the DT binding not consistent.

But the patch broke the later case since not finding a panel dev node
would cause the driver's to do a probe deferral instead of attempting
to lookup a bridge device node associated with the remote endpoint.

So instead of returning a -EPROBE_DEFER if a panel is not found, check
if there's a bridge and only do a probe deferral if both aren't found.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
8 years agodrm: exynos: make PM functions as __maybe_unused
Arnd Bergmann [Wed, 20 Jan 2016 10:33:37 +0000 (11:33 +0100)]
drm: exynos: make PM functions as __maybe_unused

The newly added runtime-pm support for exynos-drm encloses the
pm functions in an #ifdef, but not the functions that are called
from them and nowhere else, which produces warnings:

drm/exynos/exynos_drm_dsi.c:733:13: warning: 'exynos_dsi_disable_clock' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)
             ^
drm/exynos/exynos_drm_dsi.c:1291:13: warning: 'exynos_dsi_disable_irq' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
             ^

This removes the #ifdef and instead marks the functions as
__maybe_unused, so gcc can silently discard them and all called
functions when CONFIG_PM is disabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
8 years agodrm/exynos: fix building without CONFIG_PM_SLEEP
Arnd Bergmann [Tue, 17 Nov 2015 15:08:36 +0000 (16:08 +0100)]
drm/exynos: fix building without CONFIG_PM_SLEEP

The runtime PM operations use the suspend/resume functions
even when CONFIG_PM_SLEEP is not set, but this now fails
for the exynos DRM driver:

exynos_mixer.c:1289:61: error: 'exynos_mixer_resume' undeclared here (not in a function)
  SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)

This removes the #ifdef and instead marks the functions as
__maybe_unused, which does the right thing in all cases and
also looks nicer.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
8 years agoLinux 4.5-rc2
Linus Torvalds [Mon, 1 Feb 2016 02:12:16 +0000 (18:12 -0800)]
Linux 4.5-rc2

8 years agoMerge tag 'usb-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Mon, 1 Feb 2016 01:36:45 +0000 (17:36 -0800)]
Merge tag 'usb-4.5-rc2' of git://git./linux/kernel/git/gregkh/usb

Pull USB driver fixes from Greg KH:
 "Here are some small USB fixes and new device ids for 4.5-rc2.  Nothing
  major here, full details are in the shortlog, and all of these have
  been in linux-next successfully"

* tag 'usb-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: option: fix Cinterion AHxx enumeration
  USB: mxu11x0: fix memory leak on usb_serial private data
  USB: serial: ftdi_sio: add support for Yaesu SCU-18 cable
  USB: serial: option: Adding support for Telit LE922
  USB: serial: visor: fix crash on detecting device without write_urbs
  USB: visor: fix null-deref at probe
  USB: cp210x: add ID for IAI USB to RS485 adaptor
  usb: hub: do not clear BOS field during reset device
  cdc-acm:exclude Samsung phone 04e8:685d
  usb: cdc-acm: send zero packet for intel 7260 modem
  usb: cdc-acm: handle unlinked urb in acm read callback

8 years agoMerge tag 'tty-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Mon, 1 Feb 2016 01:09:39 +0000 (17:09 -0800)]
Merge tag 'tty-4.5-rc2' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some small tty/serial driver fixes for 4.5-rc2.

  They resolve a number of reported problems (the ioctl one specifically
  has been pointed out by numerous people) and one patch adds some new
  device ids for the 8250_pci driver.  All have been in linux-next
  successfully"

* tag 'tty-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_pci: Add Intel Broadwell ports
  staging/speakup: Use tty_ldisc_ref() for paste kworker
  n_tty: Fix unsafe reference to "other" ldisc
  tty: Fix unsafe ldisc reference via ioctl(TIOCGETD)
  tty: Retry failed reopen if tty teardown in-progress
  tty: Wait interruptibly for tty lock on reopen

8 years agoMerge tag 'staging-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Mon, 1 Feb 2016 01:00:27 +0000 (17:00 -0800)]
Merge tag 'staging-4.5-rc2' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are some small staging driver fixes for 4.5-rc2.

  One of them predated 4.4-final, but I missed that merge window due to
  the holliday.  The others fix reported issues that have come up
  recently.  The tty change is needed for the speakup driver fix and has
  the ack of the tty driver maintainer as well, i.e.  myself :)

  All have been in linux-next with no reported issues"

* tag 'staging-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  Staging: speakup: fix read scrolled-back VT
  Staging: speakup: Fix getting port information
  Revert "Staging: panel: usleep_range is preferred over udelay"
  iio: adis_buffer: Fix out-of-bounds memory access

8 years agoMerge tag 'driver-core-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 1 Feb 2016 00:55:04 +0000 (16:55 -0800)]
Merge tag 'driver-core-4.5-rc2' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here's a single driver core fix that resolves an issue a lot of users
  have been hitting for a while now.  It's been tested a lot and has
  been in linux-next successfully for a while"

* tag 'driver-core-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  base/platform: Fix platform drivers with no probe callback

8 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Mon, 1 Feb 2016 00:50:31 +0000 (16:50 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fix from Ralf Baechle:
 "Just a single revert for a patch which I had upstreamed out of
  sequence"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  Revert "MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function"

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 1 Feb 2016 00:17:19 +0000 (16:17 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A bit on the largish side due to a series of fixes for a regression in
  the x86 vector management which was introduced in 4.3.  This work was
  started in December already, but it took some time to fix all corner
  cases and a couple of older bugs in that area which were detected
  while at it

  Aside of that a few platform updates for intel-mid, quark and UV and
  two fixes for in the mm code:
   - Use proper types for pgprot values to avoid truncation
   - Prevent a size truncation in the pageattr code when setting page
     attributes for large mappings"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/mm/pat: Avoid truncation when converting cpa->numpages to address
  x86/mm: Fix types used in pgprot cacheability flags translations
  x86/platform/quark: Print boundaries correctly
  x86/platform/UV: Remove EFI memmap quirk for UV2+
  x86/platform/intel-mid: Join string and fix SoC name
  x86/platform/intel-mid: Enable 64-bit build
  x86/irq: Plug vector cleanup race
  x86/irq: Call irq_force_move_complete with irq descriptor
  x86/irq: Remove outgoing CPU from vector cleanup mask
  x86/irq: Remove the cpumask allocation from send_cleanup_vector()
  x86/irq: Clear move_in_progress before sending cleanup IPI
  x86/irq: Remove offline cpus from vector cleanup
  x86/irq: Get rid of code duplication
  x86/irq: Copy vectormask instead of an AND operation
  x86/irq: Check vector allocation early
  x86/irq: Reorganize the search in assign_irq_vector
  x86/irq: Reorganize the return path in assign_irq_vector
  x86/irq: Do not use apic_chip_data.old_domain as temporary buffer
  x86/irq: Validate that irq descriptor is still active
  x86/irq: Fix a race in x86_vector_free_irqs()
  ...

8 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 23:49:06 +0000 (15:49 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "The timer departement delivers:

   - a regression fix for the NTP code along with a proper selftest
   - prevent a spurious timer interrupt in the NOHZ lowres code
   - a fix for user space interfaces returning the remaining time on
     architectures with CONFIG_TIME_LOW_RES=y
   - a few patches to fix COMPILE_TEST fallout"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tick/nohz: Set the correct expiry when switching to nohz/lowres mode
  clocksource: Fix dependencies for archs w/o HAS_IOMEM
  clocksource: Select CLKSRC_MMIO where needed
  tick/sched: Hide unused oneshot timer code
  kselftests: timers: Add adjtimex SETOFFSET validity tests
  ntp: Fix ADJ_SETOFFSET being used w/ ADJ_NANO
  itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper
  posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper
  timerfd: Handle relative timers with CONFIG_TIME_LOW_RES proper
  hrtimer: Handle remaining time proper for TIME_LOW_RES
  clockevents/tcb_clksrc: Prevent disabling an already disabled clock

8 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 23:44:04 +0000 (15:44 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Thomas Gleixner:
 "Three small fixes in the scheduler/core:

   - use after free in the numa code
   - crash in the numa init code
   - a simple spelling fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  pid: Fix spelling in comments
  sched/numa: Fix use-after-free bug in the task_numa_compare
  sched: Fix crash in sched_init_numa()

8 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 23:38:27 +0000 (15:38 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "This is much bigger than typical fixes, but Peter found a category of
  races that spurred more fixes and more debugging enhancements.  Work
  started before the merge window, but got finished only now.

  Aside of that this contains the usual small fixes to perf and tools.
  Nothing particular exciting"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
  perf: Remove/simplify lockdep annotation
  perf: Synchronously clean up child events
  perf: Untangle 'owner' confusion
  perf: Add flags argument to perf_remove_from_context()
  perf: Clean up sync_child_event()
  perf: Robustify event->owner usage and SMP ordering
  perf: Fix STATE_EXIT usage
  perf: Update locking order
  perf: Remove __free_event()
  perf/bpf: Convert perf_event_array to use struct file
  perf: Fix NULL deref
  perf/x86: De-obfuscate code
  perf/x86: Fix uninitialized value usage
  perf: Fix race in perf_event_exit_task_context()
  perf: Fix orphan hole
  perf stat: Do not clean event's private stats
  perf hists: Fix HISTC_MEM_DCACHELINE width setting
  perf annotate browser: Fix behaviour of Shift-Tab with nothing focussed
  perf tests: Remove wrong semicolon in while loop in CQM test
  perf: Synchronously free aux pages in case of allocation failure
  ...

8 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 23:29:37 +0000 (15:29 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fix from Thomas Gleixner:
 "A single commit, which makes the rtmutex.wait_lock an irq safe lock.

  This prevents a potential deadlock which can be triggered by the rcu
  boosting code from rcu_read_unlock()"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rtmutex: Make wait_lock irq safe

8 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 22:48:58 +0000 (14:48 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull IRQ fixes from Ingo Molnar:
 "Mostly irqchip driver fixes, but also an irq core crash fix and a
  build fix"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/mxs: Add missing set_handle_irq()
  irqchip/atmel-aic: Fix wrong bit operation for IRQ priority
  irqchip/gic-v3-its: Recompute the number of pages on page size change
  base: Export platform_msi_domain_[alloc,free]_irqs
  of: MSI: Simplify irqdomain lookup
  irqdomain: Allow domain lookup with DOMAIN_BUS_WIRED token
  irqchip: Fix dependencies for archs w/o HAS_IOMEM
  irqchip/s3c24xx: Mark init_eint as __maybe_unused
  genirq: Validate action before dereferencing it in handle_irq_event_percpu()

8 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Jan 2016 22:43:09 +0000 (14:43 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull debugobjects fix from Ingo Molnar:
 "Bump up debugobjects pool limit that bigger s390 systems kept running
  into"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Allow bigger number of early boot objects

8 years agoMerge tag 'vfio-v4.5-rc2' of git://github.com/awilliam/linux-vfio
Linus Torvalds [Sun, 31 Jan 2016 22:38:37 +0000 (14:38 -0800)]
Merge tag 'vfio-v4.5-rc2' of git://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:
 "Use alternate group tracking for no-iommu"

* tag 'vfio-v4.5-rc2' of git://github.com/awilliam/linux-vfio:
  vfio/noiommu: Don't use iommu_present() to track fake groups

8 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 31 Jan 2016 22:29:52 +0000 (14:29 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Here are two I2C driver regression fixes.  piix4 gets a larger
  overhaul fixing the latest refactoring and also an older known issue
  as well.  designware-pci gets a fix for a bad merge conflict
  resolution"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: piix4: don't regress on bus names
  i2c: designware-pci: use IRQF_COND_SUSPEND flag
  i2c: piix4: Fully initialize SB800 before it is registered
  i2c: piix4: Fix SB800 locking

8 years agopid: Fix spelling in comments
Zhen Lei [Sat, 30 Jan 2016 02:04:17 +0000 (10:04 +0800)]
pid: Fix spelling in comments

Accidentally discovered this typo when I studied this module.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tianhong Ding <dingtianhong@huawei.com>
Cc: Xinwei Hu <huxinwei@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Link: http://lkml.kernel.org/r/1454119457-11272-1-git-send-email-thunder.leizhen@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Sat, 30 Jan 2016 08:15:49 +0000 (09:15 +0100)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

 - Fix 'perf stat' stddev reporting due to mistakenly cleaning event
   private stats (Jiri Olsa)

 - Fix 'perf test CQM' endless loop detected by 'gcc6 -Wmisleading-indentation'
   (Markus Trippelsdorf)

 - Fix behaviour of Shift-Tab when nothing is focussed in the annotate TUI browser,
   detected with gcc6 -Wmisleading-indentation (Markus Trippelsdorf)

 - Fix mem data cacheline hists browser width setting for unresolved
   addresses (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sat, 30 Jan 2016 00:16:12 +0000 (16:16 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Just one fix for a -fstack-protector-strong problem from Kees Cook,
  and adding the new copy_file_range syscall"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: wire up copy_file_range() syscall
  ARM: 8500/1: fix atags_to_fdt with stack-protector-strong

8 years agoMerge tag 'powerpc-4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 30 Jan 2016 00:10:16 +0000 (16:10 -0800)]
Merge tag 'powerpc-4.5-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 - Wire up copy_file_range() syscall from Chandan Rajendra
 - Simplify module TOC handling from Alan Modra
 - Remove newly added extra definition of pmd_dirty from Stephen Rothwell
 - Allow user space to map rtas_rmo_buf from Vasant Hegde
 - Fix PE location code from Gavin Shan
 - Remove PPMU_HAS_SSLOT flag for Power8 from Madhavan Srinivasan
 - Fixup _HPAGE_CHG_MASK from Aneesh Kumar K.V

* tag 'powerpc-4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Fixup _HPAGE_CHG_MASK
  powerpc/perf: Remove PPMU_HAS_SSLOT flag for Power8
  powerpc/eeh: Fix PE location code
  powerpc/mm: Allow user space to map rtas_rmo_buf
  powerpc: Remove newly added extra definition of pmd_dirty
  powerpc: Simplify module TOC handling
  powerpc: Wire up copy_file_range() syscall

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 30 Jan 2016 00:05:18 +0000 (16:05 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "An optimization for irq-restore, the SSM instruction is quite a bit
  slower than an if-statement and a STOSM.

  The copy_file_range system all is added.

  Cleanup for PCI and CIO.

  And a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: update measurement characteristics
  s390/cio: ensure consistent measurement state
  s390/cio: fix measurement characteristics memleak
  s390/zcrypt: Fix cryptographic device id in kernel messages
  s390/pci: remove iomap sanity checks
  s390/pci: set error state for unusable functions
  s390/pci: fix bar check
  s390/pci: resize iomap
  s390/pci: improve ZPCI_* macros
  s390/pci: provide ZPCI_ADDR macro
  s390/pci: adjust IOMAP_MAX_ENTRIES
  s390/numa: move numa_init_late() from device to arch_initcall
  s390: remove all usages of PSW_ADDR_INSN
  s390: remove all usages of PSW_ADDR_AMODE
  s390: wire up copy_file_range syscall
  s390: remove superfluous memblock_alloc() return value checks
  s390/numa: allocate memory with correct alignment
  s390/irqflags: optimize irq restore
  s390/mm: use TASK_MAX_SIZE where applicable

8 years agoMerge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
Linus Torvalds [Fri, 29 Jan 2016 23:46:49 +0000 (15:46 -0800)]
Merge branch 'for-linus-4.5' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "Dave had a small collection of fixes to the new free space tree code,
  one of which was keeping our sysfs files more up to date with feature
  bits as different things get enabled (lzo, raid5/6, etc).

  I should have kept the sysfs stuff for rc3, since we always manage to
  trip over something.  This time it was GFP_KERNEL from somewhere that
  is NOFS only.  Instead of rebasing it out I've put a revert in, and
  we'll fix it properly for rc3.

  Otherwise, Filipe fixed a btrfs DIO race and Qu Wenruo fixed up a
  use-after-free in our tracepoints that Dave Jones reported"

* 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Revert "btrfs: synchronize incompat feature bits with sysfs files"
  btrfs: don't use GFP_HIGHMEM for free-space-tree bitmap kzalloc
  btrfs: sysfs: check initialization state before updating features
  Revert "btrfs: clear PF_NOFREEZE in cleaner_kthread()"
  btrfs: async-thread: Fix a use-after-free error for trace
  Btrfs: fix race between fsync and lockless direct IO writes
  btrfs: add free space tree to the cow-only list
  btrfs: add free space tree to lockdep classes
  btrfs: tweak free space tree bitmap allocation
  btrfs: tests: switch to GFP_KERNEL
  btrfs: synchronize incompat feature bits with sysfs files
  btrfs: sysfs: introduce helper for syncing bits with sysfs files
  btrfs: sysfs: add free-space-tree bit attribute
  btrfs: sysfs: fix typo in compat_ro attribute definition

8 years agoMerge tag 'pm+acpi-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 29 Jan 2016 23:40:59 +0000 (15:40 -0800)]
Merge tag 'pm+acpi-4.5-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are: cpuidle fixes (including one fix for a recent regression),
  cpufreq fixes (including fixes for two issues introduced during the
  4.2 cycle), generic power domains framework fixes (two locking fixes
  and one cleanup), one locking fix in the ACPI-based PCI hotplug
  framework (ACPIPHP), removal of one ACPI backlight blacklist entry
  that isn't necessary any more and a PM Kconfig cleanup.

  Specifics:

   - Fix a recent cpuidle core regression that broke suspend-to-idle on
     all systems where cpuidle drivers don't provide ->enter_freeze
     callbacks for any states (Sudeep Holla).

   - Drop an unnecessary symbol definition from the cpuidle core code
     handling coupled CPU cores (Anders Roxell).

   - Fix a race condition related to governor initialization and removal
     in the cpufreq core (Viresh Kumar).

   - Clean up the cpufreq core to use list_is_last() for checking if the
     given policy object is the last element of a list instead of open
     coding that in a clumsy way (Gautham R Shenoy).

   - Fix compiler warnings in the pxa2xx and cpufreq-dt cpufreq drivers
     (Arnd Bergmann).

   - Fix two locking issues and clean up a comment in the generic power
     domains framework (Ulf Hansson, Marek Szyprowski, Moritz Fischer).

   - Fix the error code path of one function in the ACPI-based PCI
     hotplug framework (ACPIPHP) that forgets to release a lock acquired
     previously (Insu Yun).

   - Drop the ACPI backlight blacklist entry for Dell Inspiron 5737 that
     is not necessary any more (Hans de Goede).

   - Clean up the top-level PM Kconfig to stop requiring APM emulation
     to depend on PM which in fact isn't necessary (Arnd Bergmann)"

* tag 'pm+acpi-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: cpufreq-dt: avoid uninitialized variable warnings:
  cpufreq: pxa2xx: fix pxa_cpufreq_change_voltage prototype
  PM: APM_EMULATION does not depend on PM
  cpufreq: Use list_is_last() to check last entry of the policy list
  cpufreq: Fix NULL reference crash while accessing policy->governor_data
  cpuidle: coupled: remove unused define cpuidle_coupled_lock
  PM / Domains: Fix typo in comment
  PM / Domains: Fix potential deadlock while adding/removing subdomains
  ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()
  ACPI: Revert "ACPI / video: Add Dell Inspiron 5737 to the blacklist"
  cpuidle: fix fallback mechanism for suspend to idle in absence of enter_freeze
  PM / domains: fix lockdep issue for all subdomains

8 years agoMerge branch 'stable/for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 29 Jan 2016 23:19:42 +0000 (15:19 -0800)]
Merge branch 'stable/for-linus-4.5' of git://git./linux/kernel/git/konrad/swiotlb

Pull swiotlb patchlet from Konrad Rzeszutek Wilk:
 "One trivial patch.

  Another patch (from Fengguang) is already in your tree courtesy of
  Andrew Morton - but I would prefer not to rebase my tree.  Hence the
  diff is very small"

* 'stable/for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Make linux/swiotlb.h standalone includible
  MAINTAINERS: add git URL for swiotlb

8 years agoMerge branch 'stable/for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 29 Jan 2016 23:13:48 +0000 (15:13 -0800)]
Merge branch 'stable/for-linus-4.5' of git://git./linux/kernel/git/konrad/mm

Pull cleancache cleanups from Konrad Rzeszutek Wilk:
 "Simple cleanups"

* 'stable/for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mm:
  include/linux/cleancache.h: Clean up code
  cleancache: constify cleancache_ops structure

8 years agoMerge tag 'iommu-fixes-v4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Jan 2016 23:05:49 +0000 (15:05 -0800)]
Merge tag 'iommu-fixes-v4.5-rc1' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "Five patches queued up:

   - Two patches for the AMD and Intel IOMMU drivers to fix alias
     handling and ATS handling.

   - Fix build error with arm io-pgtable code

   - Two documentation fixes"

* tag 'iommu-fixes-v4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu: Update struct iommu_ops comments
  iommu/vt-d: Fix link to Intel IOMMU Specification
  iommu/amd: Correct the wrong setting of alias DTE in do_attach
  iommu/vt-d: Don't skip PCI devices when disabling IOTLB
  iommu/io-pgtable-arm: Fix io-pgtable-arm build failure

8 years agoMerge tag 'hwmon-for-linus-v4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 29 Jan 2016 21:20:39 +0000 (13:20 -0800)]
Merge tag 'hwmon-for-linus-v4.5-rc2' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 - Use bit mask to calculate tdp limit in fam15h_power driver
 - Black-list Dell Studio XPS 8000 in dell-smm driver

* tag 'hwmon-for-linus-v4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (fam15h_power) Add bit masking for tdp_limit
  hwmon: (dell-smm) Blacklist Dell Studio XPS 8000

8 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 29 Jan 2016 21:14:45 +0000 (13:14 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four fixes: one to try to fix our repeated intermittent crashes in
  suspend/resume, one to correct a regression in the optimal I/O size
  reporting and a couple for randconfig build failures in the hisi_sas
  driver"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  SCSI: fix crashes in sd and sr runtime PM
  sd: Optimal I/O size is in bytes, not sectors
  hisi_sas: Restrict SCSI_HISI_SAS to arm64
  hisi_sas: SCSI_HISI_SAS should depend on HAS_DMA

8 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 29 Jan 2016 20:56:08 +0000 (12:56 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block layer fix from Jens Axboe:
 "This just contains the fix for the split issue that we had in -rc1.

  It's been well tested at this point, so let's get it in mainline so we
  don't have the same split issue for -rc2"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix bio splitting on max sectors

8 years agoMerge branches 'pm-cpuidle', 'pm-cpufreq', 'pm-domains' and 'pm-sleep'
Rafael J. Wysocki [Fri, 29 Jan 2016 20:45:17 +0000 (21:45 +0100)]
Merge branches 'pm-cpuidle', 'pm-cpufreq', 'pm-domains' and 'pm-sleep'

* pm-cpuidle:
  cpuidle: coupled: remove unused define cpuidle_coupled_lock
  cpuidle: fix fallback mechanism for suspend to idle in absence of enter_freeze

* pm-cpufreq:
  cpufreq: cpufreq-dt: avoid uninitialized variable warnings:
  cpufreq: pxa2xx: fix pxa_cpufreq_change_voltage prototype
  cpufreq: Use list_is_last() to check last entry of the policy list
  cpufreq: Fix NULL reference crash while accessing policy->governor_data

* pm-domains:
  PM / Domains: Fix typo in comment
  PM / Domains: Fix potential deadlock while adding/removing subdomains
  PM / domains: fix lockdep issue for all subdomains

* pm-sleep:
  PM: APM_EMULATION does not depend on PM

8 years agoMerge branches 'acpi-video' and 'acpi-hotplug'
Rafael J. Wysocki [Fri, 29 Jan 2016 20:44:53 +0000 (21:44 +0100)]
Merge branches 'acpi-video' and 'acpi-hotplug'

* acpi-video:
  ACPI: Revert "ACPI / video: Add Dell Inspiron 5737 to the blacklist"

* acpi-hotplug:
  ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()

8 years agoMerge tag 'sound-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 29 Jan 2016 20:34:39 +0000 (12:34 -0800)]
Merge tag 'sound-4.5-rc2' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "There are a few fixes in ALSA core for bugs that have been spotted by
  fuzzer.  Also a temporary workaround for PowerPC (and possibly other)
  builds with incompatible ioctls was applied to compress API.

  Other than that, a few trivial fixes and quirks for FireWire BeBoB,
  USB-audio and HD-audio are found, too"

* tag 'sound-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - disable dynamic clock gating on Broxton before reset
  ALSA: hda - Add new GPU codec ID 0x10de0083 to snd-hda
  ALSA: dummy: Disable switching timer backend via sysfs
  ALSA: timer: fix SND_PCM_TIMER Kconfig text
  ALSA: Add missing dependency on CONFIG_SND_TIMER
  ALSA: bebob: Use a signed return type for get_formation_index
  ALSA: usb-audio: Fix TEAC UD-501/UD-503/NT-503 usb delay
  ALSA: compress: Disable GET_CODEC_CAPS ioctl for some architectures
  ALSA: seq: Degrade the error message for too many opens
  ALSA: seq: Fix incorrect sanity check at snd_seq_oss_synth_cleanup()

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 29 Jan 2016 20:28:45 +0000 (12:28 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Summary:

  - Misc amdgpu/radeon fixes
  - VC4 build fix
  - vmwgfx fix
  - misc rockchip fixes

  The etnaviv guys had an API feature they wanted in their first
  release, so I've merged that with their fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (41 commits)
  drm/vmwgfx: respect 'nomodeset'
  drm/amdgpu: only move pt bos in LRU list on success
  drm/radeon: fix DP audio support for APU with DCE4.1 display engine
  drm/radeon: Add a common function for DFS handling
  drm/radeon: cleaned up VCO output settings for DP audio
  drm/amd/powerplay: Update SMU firmware loading for Stoney
  drm/etnaviv: call correct function when trying to vmap a DMABUF
  drm/etnaviv: rename etnaviv_gem_vaddr to etnaviv_gem_vmap
  drm/etnaviv: fix get pages error path in etnaviv_gem_vaddr
  drm/etnaviv: fix memory leak in IOMMU init path
  drm/etnaviv: add further minor features and varyings count
  drm/etnaviv: add helper for comparing model/revision IDs
  drm/etnaviv: add helper to extract bitfields
  drm/etnaviv: use defined constants for the chip model
  drm/etnaviv: update common and state_hi xml.h files
  drm/etnaviv: ignore VG GPUs with FE2.0
  drm/amdgpu: don't init fbdev if we don't have any connectors
  drm/radeon: only init fbdev if we have connectors
  drm/radeon: Ensure radeon bo is unreserved in radeon_gem_va_ioctl
  drm/etnaviv: fix failure path if model is zero
  ...

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Fri, 29 Jan 2016 20:24:05 +0000 (12:24 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security

Pull security layer fixes from James Morris:
 "The keys patch fixes a bug which is breaking kerberos, and the seccomp
  fix addresses a no_new_privs bypass"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  KEYS: Only apply KEY_FLAG_KEEP to a key if a parent keyring has it set
  seccomp: always propagate NO_NEW_PRIVS on tsync

8 years agoRevert "btrfs: synchronize incompat feature bits with sysfs files"
Chris Mason [Fri, 29 Jan 2016 16:19:37 +0000 (08:19 -0800)]
Revert "btrfs: synchronize incompat feature bits with sysfs files"

This reverts commit 14e46e04958df740c6c6a94849f176159a333f13.

This ends up doing sysfs operations from deep in balance (where we
should be GFP_NOFS) and under heavy balance load, we're making races
against sysfs internals.

Revert it for now while we figure things out.

Signed-off-by: Chris Mason <clm@fb.com>
8 years agoserial: 8250_pci: Add Intel Broadwell ports
Mika Westerberg [Fri, 29 Jan 2016 14:49:47 +0000 (16:49 +0200)]
serial: 8250_pci: Add Intel Broadwell ports

Some recent (early 2015) macbooks have Intel Broadwell where LPSS UARTs are
PCI enumerated instead of ACPI. The LPSS UART block is pretty much same as
used on Intel Baytrail so we can reuse the existing Baytrail setup code.

Add both Broadwell LPSS UART ports to the list of supported devices.

Signed-off-by: Leif Liddy <leif.liddy@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agox86/mm/pat: Avoid truncation when converting cpa->numpages to address
Matt Fleming [Fri, 29 Jan 2016 11:36:10 +0000 (11:36 +0000)]
x86/mm/pat: Avoid truncation when converting cpa->numpages to address

There are a couple of nasty truncation bugs lurking in the pageattr
code that can be triggered when mapping EFI regions, e.g. when we pass
a cpa->pgd pointer. Because cpa->numpages is a 32-bit value, shifting
left by PAGE_SHIFT will truncate the resultant address to 32-bits.

Viorel-Cătălin managed to trigger this bug on his Dell machine that
provides a ~5GB EFI region which requires 1236992 pages to be mapped.
When calling populate_pud() the end of the region gets calculated
incorrectly in the following buggy expression,

  end = start + (cpa->numpages << PAGE_SHIFT);

And only 188416 pages are mapped. Next, populate_pud() gets invoked
for a second time because of the loop in __change_page_attr_set_clr(),
only this time no pages get mapped because shifting the remaining
number of pages (1048576) by PAGE_SHIFT is zero. At which point the
loop in __change_page_attr_set_clr() spins forever because we fail to
map progress.

Hitting this bug depends very much on the virtual address we pick to
map the large region at and how many pages we map on the initial run
through the loop. This explains why this issue was only recently hit
with the introduction of commit

  a5caa209ba9c ("x86/efi: Fix boot crash by mapping EFI memmap
   entries bottom-up at runtime, instead of top-down")

It's interesting to note that safe uses of cpa->numpages do exist in
the pageattr code. If instead of shifting ->numpages we multiply by
PAGE_SIZE, no truncation occurs because PAGE_SIZE is a UL value, and
so the result is unsigned long.

To avoid surprises when users try to convert very large cpa->numpages
values to addresses, change the data type from 'int' to 'unsigned
long', thereby making it suitable for shifting by PAGE_SHIFT without
any type casting.

The alternative would be to make liberal use of casting, but that is
far more likely to cause problems in the future when someone adds more
code and fails to cast properly; this bug was difficult enough to
track down in the first place.

Reported-and-tested-by: Viorel-Cătălin Răpițeanu <rapiteanu.catalin@gmail.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=110131
Link: http://lkml.kernel.org/r/1454067370-10374-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
8 years agoALSA: hda - disable dynamic clock gating on Broxton before reset
Libin Yang [Fri, 29 Jan 2016 12:39:09 +0000 (20:39 +0800)]
ALSA: hda - disable dynamic clock gating on Broxton before reset

On Broxton, to make sure the reset controller works properly,
MISCBDCGE bit (bit 6) in CGCTL (0x48) of PCI configuration space
need be cleared before reset and set back to 1 after reset.
Otherwise, it may prevent the CORB/RIRB logic from being reset.

Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoiommu: Update struct iommu_ops comments
Magnus Damm [Tue, 19 Jan 2016 05:28:48 +0000 (14:28 +0900)]
iommu: Update struct iommu_ops comments

Update the comments around struct iommu_ops to match
current state and fix a few typos while at it.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoiommu/vt-d: Fix link to Intel IOMMU Specification
Michael S. Tsirkin [Tue, 26 Jan 2016 16:33:04 +0000 (18:33 +0200)]
iommu/vt-d: Fix link to Intel IOMMU Specification

Looks like the VT-d spec at intel.com got moved.  Update the link.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoiommu/amd: Correct the wrong setting of alias DTE in do_attach
Baoquan He [Wed, 20 Jan 2016 14:01:19 +0000 (22:01 +0800)]
iommu/amd: Correct the wrong setting of alias DTE in do_attach

In below commit alias DTE is set when its peripheral is
setting DTE. However there's a code bug here to wrongly
set the alias DTE, correct it in this patch.

commit e25bfb56ea7f046b71414e02f80f620deb5c6362
Author: Joerg Roedel <jroedel@suse.de>
Date:   Tue Oct 20 17:33:38 2015 +0200

    iommu/amd: Set alias DTE in do_attach/do_detach

Signed-off-by: Baoquan He <bhe@redhat.com>
Tested-by: Mark Hounschell <markh@compro.net>
Cc: stable@vger.kernel.org # v4.4
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoiommu/vt-d: Don't skip PCI devices when disabling IOTLB
Jeremy McNicoll [Fri, 15 Jan 2016 05:33:06 +0000 (21:33 -0800)]
iommu/vt-d: Don't skip PCI devices when disabling IOTLB

Fix a simple typo when disabling IOTLB on PCI(e) devices.

Fixes: b16d0cb9e2fc ("iommu/vt-d: Always enable PASID/PRI PCI capabilities before ATS")
Cc: stable@vger.kernel.org # v4.4
Signed-off-by: Jeremy McNicoll <jmcnicol@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoirqchip/mxs: Add missing set_handle_irq()
Oleksij Rempel [Fri, 29 Jan 2016 09:57:53 +0000 (10:57 +0100)]
irqchip/mxs: Add missing set_handle_irq()

The rework of the driver missed to move the call to set_handle_irq() into
asm9260_of_init(). As a consequence no interrupt entry point is installed and
no interrupts are delivered

Solution is simple: Install the interrupt entry handler.

Fixes: 7e4ac676ee ("irqchip/mxs: Add Alphascale ASM9260 support")
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Cc: kernel@pengutronix.de
Cc: jason@lakedaemon.net
Cc: marc.zyngier@arm.com
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1454061473-24957-1-git-send-email-linux@rempel-privat.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
8 years agoiommu/io-pgtable-arm: Fix io-pgtable-arm build failure
Lada Trimasova [Wed, 27 Jan 2016 11:10:32 +0000 (11:10 +0000)]
iommu/io-pgtable-arm: Fix io-pgtable-arm build failure

Trying to build a kernel for ARC with both options CONFIG_COMPILE_TEST
and CONFIG_IOMMU_IO_PGTABLE_LPAE enabled (e.g. as a result of "make
allyesconfig") results in the following build failure:

 | CC drivers/iommu/io-pgtable-arm.o
 | linux/drivers/iommu/io-pgtable-arm.c: In
 | function â€˜__arm_lpae_alloc_pages’:
 | linux/drivers/iommu/io-pgtable-arm.c:221:3:
 | error: implicit declaration of function â€˜dma_map_single’
 | [-Werror=implicit-function-declaration]
 | dma = dma_map_single(dev, pages, size, DMA_TO_DEVICE);
 | ^
 | linux/drivers/iommu/io-pgtable-arm.c:221:42:
 | error: â€˜DMA_TO_DEVICE’ undeclared (first use in this function)
 | dma = dma_map_single(dev, pages, size, DMA_TO_DEVICE);
 | ^

Since IOMMU_IO_PGTABLE_LPAE depends on DMA API, io-pgtable-arm.c should
include linux/dma-mapping.h. This fixes the reported failure.

Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Lada Trimasova <ltrimas@synopsys.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoi2c: piix4: don't regress on bus names
Jean Delvare [Wed, 27 Jan 2016 13:40:33 +0000 (14:40 +0100)]
i2c: piix4: don't regress on bus names

The I2C bus names are supposed to be stable as they can be used by
userspace to uniquely identify a specific I2C bus. So restore the
original names for all legacy (pre-SB800) devices.

For SB800 devices and later, improve the names. "SDA" refers to the
serial data pin of each SMBus port, it's an implementation detail the
user doesn't need to know. Use "port" instead, which is easier to
understand.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Christian Fetzer <fetzer.ch@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoperf: Remove/simplify lockdep annotation
Peter Zijlstra [Tue, 26 Jan 2016 14:25:15 +0000 (15:25 +0100)]
perf: Remove/simplify lockdep annotation

Now that the perf_event_ctx_lock_nested() call has moved from
put_event() into perf_event_release_kernel() the first reason is no
longer valid as that can no longer happen.

The second reason seems to have been invalidated when Al Viro made fput()
unconditionally async in the following commit:

  4a9d4b024a31 ("switch fput to task_work_add")

such that munmap()->fput()->release()->perf_release() would no longer happen.

Therefore, remove the annotation. This should increase the efficiency
of lockdep coverage of perf locking.

Suggested-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Synchronously clean up child events
Peter Zijlstra [Fri, 15 Jan 2016 14:07:41 +0000 (16:07 +0200)]
perf: Synchronously clean up child events

The orphan cleanup workqueue doesn't always catch orphans, for example,
if they never schedule after they are orphaned. IOW, the event leak is
still very real. It also wouldn't work for kernel counters.

Doing it synchonously is a little hairy due to lock inversion issues,
but is made to work.

Patch based on work by Alexander Shishkin.

Suggested-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Untangle 'owner' confusion
Peter Zijlstra [Tue, 26 Jan 2016 13:55:02 +0000 (14:55 +0100)]
perf: Untangle 'owner' confusion

There are two concepts of owner wrt an event and they are conflated:

 - event::owner / event::owner_list,
   used by prctl(.option = PR_TASK_PERF_EVENTS_{EN,DIS}ABLE).

 - the 'owner' of the event object, typically the file descriptor.

Currently these two concepts are conflated, which gives trouble with
scm_rights passing of file descriptors. Passing the event and then
closing the creating task would render the event 'orphan' and would
have it cleared out. Unlikely what is expectd.

This patch untangles these two concepts by using PERF_EVENT_STATE_EXIT
to denote the second type.

Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Add flags argument to perf_remove_from_context()
Peter Zijlstra [Tue, 26 Jan 2016 12:09:48 +0000 (13:09 +0100)]
perf: Add flags argument to perf_remove_from_context()

In preparation to adding more options, convert the boolean argument
into a flags word.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Clean up sync_child_event()
Peter Zijlstra [Tue, 26 Jan 2016 12:06:56 +0000 (13:06 +0100)]
perf: Clean up sync_child_event()

sync_child_event() has outgrown its purpose, it does far too much.
Bring it back to its named purpose.

Rename __perf_event_exit_task() to perf_event_exit_event() to better
reflect what it does and move the event->state assignment under the
ctx->lock, like state changes ought to be.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Robustify event->owner usage and SMP ordering
Peter Zijlstra [Tue, 26 Jan 2016 11:30:14 +0000 (12:30 +0100)]
perf: Robustify event->owner usage and SMP ordering

Use smp_store_release() to clear event->owner and
lockless_dereference() to observe it. Further use READ_ONCE() for all
lockless reads.

This changes perf_remove_from_owner() to leave event->owner cleared.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Fix STATE_EXIT usage
Peter Zijlstra [Tue, 26 Jan 2016 11:17:08 +0000 (12:17 +0100)]
perf: Fix STATE_EXIT usage

We should never attempt to enable a STATE_EXIT event.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Update locking order
Peter Zijlstra [Tue, 26 Jan 2016 11:15:37 +0000 (12:15 +0100)]
perf: Update locking order

Update the locking order to note that ctx::lock nests inside of
child_mutex, as per:

  perf_ioctl():                ctx::mutex
  -> perf_event_for_each():    event::child_mutex
    -> _perf_event_enable():   ctx::lock

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Remove __free_event()
Peter Zijlstra [Tue, 26 Jan 2016 11:14:40 +0000 (12:14 +0100)]
perf: Remove __free_event()

There is but a single caller, remove the function - we already have
_free_event(), the extra indirection is nonsensical..

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/bpf: Convert perf_event_array to use struct file
Alexei Starovoitov [Tue, 26 Jan 2016 04:59:49 +0000 (20:59 -0800)]
perf/bpf: Convert perf_event_array to use struct file

Robustify refcounting.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160126045947.GA40151@ast-mbp.thefacebook.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Fix NULL deref
Peter Zijlstra [Wed, 27 Jan 2016 20:59:04 +0000 (21:59 +0100)]
perf: Fix NULL deref

Dan reported:

  1229                  if (ctx->task == TASK_TOMBSTONE ||
  1230                      !atomic_inc_not_zero(&ctx->refcount)) {
  1231                          raw_spin_unlock(&ctx->lock);
  1232                          ctx = NULL;
                                ^^^^^^^^^^
ctx is NULL.

  1233                  }
  1234
  1235                  WARN_ON_ONCE(ctx->task != task);
                                     ^^^^^^^^^^^^^^^^^
The patch adds a NULL dereference.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 63b6da39bb38 ("perf: Fix perf_event_exit_task() race")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86: De-obfuscate code
Peter Zijlstra [Wed, 27 Jan 2016 22:31:09 +0000 (23:31 +0100)]
perf/x86: De-obfuscate code

Get rid of the 'onln' obfuscation.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86: Fix uninitialized value usage
Peter Zijlstra [Wed, 27 Jan 2016 22:24:29 +0000 (23:24 +0100)]
perf/x86: Fix uninitialized value usage

When calling intel_alt_er() with .idx != EXTRA_REG_RSP_* we will not
initialize alt_idx and then use this uninitialized value to index an
array.

When that is not fatal, it can result in an infinite loop in its
caller __intel_shared_reg_get_constraints(), with IRQs disabled.

Alternative error modes are random memory corruption due to the
cpuc->shared_regs->regs[] array overrun, which manifest in either
get_constraints or put_constraints doing weird stuff.

Only took 6 hours of painful debugging to find this. Neither GCC nor
Smatch warnings flagged this bug.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: ae3f011fc251 ("perf/x86/intel: Fix SLM MSR_OFFCORE_RSP1 valid_mask")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agodrm/i915: refine qemu south bridge detection
Gerd Hoffmann [Mon, 25 Jan 2016 11:02:28 +0000 (12:02 +0100)]
drm/i915: refine qemu south bridge detection

The test for the qemu q35 south bridge added by commit
"39bfcd52 drm/i915: more virtual south bridge detection"
also matches on real hardware.  Having the check for
virtual systems last in the list is not enough to avoid
that ...

Refine the check by additionally verifying the pci
subsystem id to see whenever it *really* is qemu.

[ v2: fix subvendor tyops ]

Reported-and-tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Bruno Wolff III <bruno@wolff.to>
Cc: drm-intel-fixes@lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453719748-10944-1-git-send-email-kraxel@redhat.com
(cherry picked from commit 1e859111c128265f8d62b39ff322e42b1ddb5a20)

8 years agodrm/i915: Remove select to deleted STOP_MACHINE from Kconfig
Andreas Ziegler [Mon, 25 Jan 2016 11:41:19 +0000 (12:41 +0100)]
drm/i915: Remove select to deleted STOP_MACHINE from Kconfig

Commit 5bab6f60cb4d ("drm/i915: Serialise updates to GGTT with access
through GGTT on Braswell") depended upon a working stop_machine() and
so forced the selection of STOP_MACHINE. However, commit 86fffe4a61dd
("kernel: remove stop_machine() Kconfig dependency") removed the option
STOP_MACHINE from init/Kconfig and ensured that stop_machine()
universally works. Due to the order in which the patches were applied,
removing the select from DRM_I915 got lost during merging.

Remove the now obsolete select statement.

Signed-off-by: Andreas Ziegler <andreas.ziegler@fau.de>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1453722079-2604-1-git-send-email-andreas.ziegler@fau.de
Cc: drm-intel-fixes@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 21fabbebff0e17c7698ed399cae23958c214cc82)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agodrm/i915: Fix NULL plane->fb oops on SKL
Ville Syrjälä [Tue, 19 Jan 2016 16:23:17 +0000 (18:23 +0200)]
drm/i915: Fix NULL plane->fb oops on SKL

In this atomic age, we can't trust the plane->fb pointer anymore.
It might get update too late. Instead we are supposed to use the
plane_state->fb pointer instead. Let's do that in
intel_plane_obj_offset() and avoid problems from dereferencing the
potentially stale plane->fb pointer.

Paulo found this with 'kms_frontbuffer_tracking --show-hidden --run-subtest nop-1p-rte'
but it can be reproduced with just plain old kms_setplane.

I was too lazy to bisect this, so not sure exactly when it broke. The
most obvious candidate
commit ce7f17285639 ("drm/i915: Fix i915_ggtt_view_equal to handle rotation correctly")
was actually still fine, so it must have broken some time after that.

Here's the resulting fireworks:
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffffa02d2d9a>] intel_fill_fb_ggtt_view+0x1b/0x15a [i915]
PGD 8a5f6067 PUD 8a5f5067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm intel_gtt agpgart netconsole mousedev hid_generic psmouse usbhid atkbd libps2 coretemp hwmon efi_pstore intel_rapl iosf_mbi x86_pkg_temp_thermal efivars pcspkr e1000e sdhci_pci ptp pps_core sdhci i2c_i801 mmc_core i2c_hid hid i8042 serio evdev sch_fq_codel ip_tables x_tables ipv6 autofs4
CPU: 1 PID: 260 Comm: kms_plane Not tainted 4.4.0-skl+ #171
Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B104.B00.1511030553 11/03/2015
task: ffff88008bde2d80 ti: ffff88008a6ec000 task.ti: ffff88008a6ec000
RIP: 0010:[<ffffffffa02d2d9a>]  [<ffffffffa02d2d9a>] intel_fill_fb_ggtt_view+0x1b/0x15a [i915]
RSP: 0018:ffff88008a6efa10  EFLAGS: 00010086
RAX: 0000000000000001 RBX: ffff8801674f4240 RCX: 0000000000000014
RDX: ffff88008a7440c0 RSI: 0000000000000000 RDI: ffff88008a6efa40
RBP: ffff88008a6efa30 R08: ffff88008bde3598 R09: 0000000000000001
R10: ffff88008b782000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88008a7440c0 R14: 0000000000000000 R15: ffff88008a7449c0
FS:  00007fa0c07a28c0(0000) GS:ffff88016ec40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000008a6ff000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801674f4240 0000000000000000 ffff88008a7440c0 0000000000000000
 ffff88008a6efaa0 ffffffffa02daf25 ffffffff814ec80e 0000000000070298
 ffff8800850d0000 ffff88008a6efaa0 ffffffffa02c49c2 0000000000000002
Call Trace:
 [<ffffffffa02daf25>] intel_plane_obj_offset+0x2d/0xa9 [i915]
 [<ffffffff814ec80e>] ? _raw_spin_unlock_irqrestore+0x4b/0x60
 [<ffffffffa02c49c2>] ? gen9_write32+0x2e8/0x3b8 [i915]
 [<ffffffffa02eecfc>] skl_update_plane+0x203/0x4c5 [i915]
 [<ffffffffa02ca1ab>] intel_plane_atomic_update+0x53/0x6a [i915]
 [<ffffffffa02494a4>] drm_atomic_helper_commit_planes_on_crtc+0x142/0x1d5 [drm_kms_helper]
 [<ffffffffa02de44b>] intel_atomic_commit+0x1262/0x1350 [i915]
 [<ffffffffa024a0ee>] ? __drm_atomic_helper_crtc_duplicate_state+0x2f/0x41 [drm_kms_helper]
 [<ffffffffa01ef089>] ? drm_atomic_check_only+0x3e3/0x552 [drm]
 [<ffffffffa01ef245>] drm_atomic_commit+0x4d/0x52 [drm]
 [<ffffffffa024996b>] drm_atomic_helper_update_plane+0xcb/0x118 [drm_kms_helper]
 [<ffffffffa01e42e8>] __setplane_internal+0x1c8/0x224 [drm]
 [<ffffffffa01e477f>] drm_mode_setplane+0x14e/0x172 [drm]
 [<ffffffffa01d8117>] drm_ioctl+0x265/0x3ad [drm]
 [<ffffffffa01e4631>] ? drm_mode_cursor_common+0x158/0x158 [drm]
 [<ffffffff810d00ab>] ? current_kernel_time64+0x5e/0x98
 [<ffffffff810a76ea>] ? trace_hardirqs_on_caller+0x17a/0x196
 [<ffffffff8119880f>] do_vfs_ioctl+0x42b/0x4ea
 [<ffffffff811a2b72>] ? __fget_light+0x4d/0x71
 [<ffffffff81198911>] SyS_ioctl+0x43/0x61
 [<ffffffff814ed057>] entry_SYSCALL_64_fastpath+0x12/0x6f

Cc: drm-intel-fixes@lists.freedesktop.org
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Testcase: igt/kms_plane
Reported-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453220597-28973-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit e794129444aba459e9bedf5080bfb4605f933c32)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agodrm/i915: Don't reject primary plane windowing with color keying enabled on SKL+
Ville Syrjälä [Fri, 15 Jan 2016 18:46:53 +0000 (20:46 +0200)]
drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+

On SKL+ plane scaling is mutually exclusive with color keying. The code
check for this, but during some refactoring the code got changed to
also reject primary plane windowing when color keying is used. There is
no such restriction in the hardware, so restore the original logic.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: 061e4b8d650a ("drm/i915: clean up atomic plane check functions, v2.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452883613-28549-1-git-send-email-ville.syrjala@linux.intel.com
Cc: stable@vger.kernel.org
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
(cherry picked from commit 693bdc28a733dba68b86af295e7509812fec35d9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agodrm/i915/dp: fall back to 18 bpp when sink capability is unknown
Jani Nikula [Wed, 13 Jan 2016 14:35:20 +0000 (16:35 +0200)]
drm/i915/dp: fall back to 18 bpp when sink capability is unknown

Per DP spec, the source device should fall back to 18 bpp, VESA range
RGB when the sink capability is unknown. Fix the color depth
clamping. 18 bpp color depth should ensure full color range in automatic
mode.

The clamping has been HDMI specific since its introduction in

commit 996a2239f93b03c5972923f04b097f65565c5bed
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Apr 19 11:24:34 2013 +0200

    drm/i915: Disable high-bpc on pre-1.4 EDID screens

Cc: stable@vger.kernel.org
Reported-and-tested-by: Dihan Wickremasuriya <nayomal@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105331
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452695720-7076-1-git-send-email-jani.nikula@intel.com
(cherry picked from commit 013dd9e038723bbd2aa67be51847384b75be8253)

8 years agodrm/i915: Make sure DC writes are coherent on flush.
Francisco Jerez [Thu, 14 Jan 2016 02:59:39 +0000 (18:59 -0800)]
drm/i915: Make sure DC writes are coherent on flush.

We need to set the DC FLUSH PIPE_CONTROL bit on Gen7+ to guarantee
that writes performed via the HDC are visible in memory.  Fixes an
intermittent failure in a Piglit test that writes to a BO from a
shader using GL atomic counters (implemented as HDC untyped atomics)
and then expects the memory to read back the same value after mapping
it on the CPU.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91298
Tested-by: Mark Janes <mark.a.janes@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452740379-3194-1-git-send-email-currojerez@riseup.net
(cherry picked from commit 965fd602a6436f689f4f2fe40a6789582778ccd5)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agoStaging: speakup: fix read scrolled-back VT
Samuel Thibault [Mon, 25 Jan 2016 00:32:08 +0000 (01:32 +0100)]
Staging: speakup: fix read scrolled-back VT

Previously, speakup would always read the non-scrolled part of the VT,
even when the VT is scrolled back with shift-page.  This patch makes
vt.c export screen_pos so that speakup can use it to properly access
the content of the scrolled-back VT.

This was tested with both vgacon and fbcon.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoStaging: speakup: Fix getting port information
Samuel Thibault [Thu, 14 Jan 2016 23:47:41 +0000 (00:47 +0100)]
Staging: speakup: Fix getting port information

Commit f79b0d9c223c ("staging: speakup: Fixed warning <linux/serial.h>
instead of <asm/serial.h>") broke the port information in the speakup
driver: SERIAL_PORT_DFNS only gets defined if asm/serial.h is included,
and no other header includes asm/serial.h.

We here make sure serialio.c does get the arch-specific definition of
SERIAL_PORT_DFNS from asm/serial.h, if any.

Along the way, this makes sure that we do have information for the
requested serial port number (index)

Fixes: f79b0d9c223c ("staging: speakup: Fixed warning <linux/serial.h> instead of <asm/serial.h>")
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: stable <stable@vger.kernel.org> # 3.18
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoALSA: hda - Add new GPU codec ID 0x10de0083 to snd-hda
Aaron Plattner [Thu, 28 Jan 2016 22:07:38 +0000 (14:07 -0800)]
ALSA: hda - Add new GPU codec ID 0x10de0083 to snd-hda

Vendor ID 0x10de0083 is used by a yet-to-be-named GPU chip.

This chip also has the 2-ch audio swapping bug, so patch_nvhdmi is
appropriate here.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoRevert "Staging: panel: usleep_range is preferred over udelay"
Sudip Mukherjee [Sat, 23 Jan 2016 09:19:20 +0000 (14:49 +0530)]
Revert "Staging: panel: usleep_range is preferred over udelay"

This reverts commit ebd43516d3879f882a403836bba8bc5791f26a28.

We should not be sleeping inside spin_lock.

Fixes: ebd43516d387 ("Staging: panel: usleep_range is preferred over udelay")
Cc: Sirnam Swetha <theonly.ultimate@gmail.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Reported-by: Huang, Ying <ying.huang@intel.com>
Tested-by: Huang, Ying <ying.huang@intel.com>
Cc: stable <stable@vger.kernel.org> # 4.4
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoMerge tag 'trace-v4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Fri, 29 Jan 2016 01:00:50 +0000 (17:00 -0800)]
Merge tag 'trace-v4.5-rc1' of git://git./linux/kernel/git/rostedt/linux-trace

Pull minor tracing fixes from Steven Rostedt:
 "This includes three minor fixes, mostly due to cut-and-paste issues.

  The first is a cut and paste issue that changed the amount of stack to
  skip when tracing a stack dump from 0 to 6, which basically made the
  stack disappear for small stack traces.

  The second fix is just removing an unused field in a struct that is no
  longer used, and currently just wastes space.

  The third is another cut-and-paste fix that had a tracepoint recording
  the wrong field (it was recording the previous field a second time)"

* tag 'trace-v4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/dma-buf/fence: Fix timeline str value on fence_annotate_wait_on
  ftrace: Remove unused nr_trampolines var
  tracing: Fix stacktrace skip depth in trace_buffer_unlock_commit_regs()

8 years agoMerge branch 'drm-rockchip-next-fixes-2016-01-22' of https://github.com/markyzq/kerne...
Dave Airlie [Fri, 29 Jan 2016 00:04:29 +0000 (10:04 +1000)]
Merge branch 'drm-rockchip-next-fixes-2016-01-22' of https://github.com/markyzq/kernel-drm-rockchip into drm-fixes

Here are some fixes for drm/rockchip, these fixes base on drm-next.

These fixes works on my popmetal(rk3288) board.

About patch: drm/atomic-helper: Export framebuffer_changed()
Daniel Vetter ack for merging it through rockchip git trees, so framebuffer_changed() can be reused by drm/rockchip.

All others looks good, so I'd like you can land them.

* 'drm-rockchip-next-fixes-2016-01-22' of https://github.com/markyzq/kernel-drm-rockchip:
  drm/rockchip: respect CONFIG_DRM_FBDEV_EMULATION
  drm/rockchip: fix wrong pitch/size using on gem
  drm/rockchip: explain why we can't wait_for_vblanks
  drm/rockchip: don't wait for vblank if fb hasn't changed
  drm/atomic-helper: Export framebuffer_changed()
  drm/rockchip/dsi: fix handling mipi_dsi_pixel_format_to_bpp result
  drm/rockchip: vop: fix mask when updating interrupts
  drm/rockchip: cleanup unnecessary export symbol
  drm/rockchip: Don't build rockchip_drm_vop as modules

8 years agodrm/vmwgfx: respect 'nomodeset'
Rob Clark [Wed, 15 Oct 2014 19:00:47 +0000 (15:00 -0400)]
drm/vmwgfx: respect 'nomodeset'

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agoMerge tag 'drm-vc4-fixes-2015-01-19' of http://github.com/anholt/linux into drm-fixes
Dave Airlie [Fri, 29 Jan 2016 00:02:35 +0000 (10:02 +1000)]
Merge tag 'drm-vc4-fixes-2015-01-19' of github.com/anholt/linux into drm-fixes

This pull request just includes the !CONFIG_PM_SLEEP build fix for
vc4.

* tag 'drm-vc4-fixes-2015-01-19' of http://github.com/anholt/linux:
  drm/vc4: Remove broken attempt at GPU reset using genpd.

8 years agoMerge branch 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux into drm...
Dave Airlie [Fri, 29 Jan 2016 00:01:54 +0000 (10:01 +1000)]
Merge branch 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux into drm-fixes

A bunch of etnaviv fixes for 4.5-rc. Most of them are fixing
things in code paths that will only be hit if something goes
wrong, which have been unearthed by more extensive testing.

The only thing that doesn't really qualify as fixes is an UAPI
extension that userspace wants to rely on being present, so
I want to fast-track this into 4.5 before etnaviv ends up in a
released kernel.

* 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux:
  drm/etnaviv: call correct function when trying to vmap a DMABUF
  drm/etnaviv: rename etnaviv_gem_vaddr to etnaviv_gem_vmap
  drm/etnaviv: fix get pages error path in etnaviv_gem_vaddr
  drm/etnaviv: fix memory leak in IOMMU init path
  drm/etnaviv: add further minor features and varyings count
  drm/etnaviv: add helper for comparing model/revision IDs
  drm/etnaviv: add helper to extract bitfields
  drm/etnaviv: use defined constants for the chip model
  drm/etnaviv: update common and state_hi xml.h files
  drm/etnaviv: ignore VG GPUs with FE2.0
  drm/etnaviv: fix failure path if model is zero
  drm/etnaviv: hold object lock while getting pages for coredump
  drm/etnaviv: remove owner assignment from platform_driver

8 years agoMerge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 29 Jan 2016 00:00:45 +0000 (10:00 +1000)]
Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Misc radeon and amdgpu fixes:
- SMU firmware loading fix for Stoney
- DP audio fixes for DCE4.1
- Don't expose fbdev device if no connectors
- fix page table LRU list update handling

* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: only move pt bos in LRU list on success
  drm/radeon: fix DP audio support for APU with DCE4.1 display engine
  drm/radeon: Add a common function for DFS handling
  drm/radeon: cleaned up VCO output settings for DP audio
  drm/amd/powerplay: Update SMU firmware loading for Stoney
  drm/amdgpu: don't init fbdev if we don't have any connectors
  drm/radeon: only init fbdev if we have connectors
  drm/radeon: Ensure radeon bo is unreserved in radeon_gem_va_ioctl
  drm/amdgpu: fix next_rptr handling for debugfs
  drm/radeon: properly byte swap vce firmware setup
  drm/amdgpu: add a message to indicate when powerplay is enabled (v2)
  drm/amdgpu: fix amdgpu_bo_pin_restricted VRAM placing v2
  drm/amd/amdgpu: Improve amdgpu_dpm* macros to avoid unexpected result (v2)
  drm/amdgpu: Allow the driver to load if amdgpu.powerplay=1 on asics without powerplay support
  drm/amdgpu: Use drm_calloc_large for VM page_tables array
  drm/amdgpu: Add some tweaks to gfx 8 soft reset
  drm/amdgpu: fix tonga smu resume

8 years agoperf: Fix race in perf_event_exit_task_context()
Peter Zijlstra [Mon, 25 Jan 2016 13:09:54 +0000 (14:09 +0100)]
perf: Fix race in perf_event_exit_task_context()

There is a race between perf_event_exit_task_context() and
orphans_remove_work() which results in a use-after-free.

We mark ctx->task with TASK_TOMBSTONE to indicate a context is
'dead', under ctx->lock. After which point event_function_call()
on any event of that context will NOP

A concurrent orphans_remove_work() will only hold ctx->mutex for
the list iteration and not serialize against this. Therefore its
possible that orphans_remove_work()'s perf_remove_from_context()
call will fail, but we'll continue to free the event, with the
result of free'd memory still being on lists and everything.

Once perf_event_exit_task_context() gets around to acquiring
ctx->mutex it too will iterate the event list, encounter the
already free'd event and proceed to free it _again_. This fails
with the WARN in free_event().

Plug the race by having perf_event_exit_task_context() hold
ctx::mutex over the whole tear-down, thereby 'naturally'
serializing against all other sites, including the orphan work.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: alexander.shishkin@linux.intel.com
Cc: dsahern@gmail.com
Cc: namhyung@kernel.org
Link: http://lkml.kernel.org/r/20160125130954.GY6357@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Fix orphan hole
Peter Zijlstra [Mon, 25 Jan 2016 13:08:45 +0000 (14:08 +0100)]
perf: Fix orphan hole

We should set event->owner before we install the event,
otherwise there is a hole where the target task can fork() and
we'll not inherit the event because it thinks the event is
orphaned.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agodrm/amdgpu: only move pt bos in LRU list on success
Nicolai Hähnle [Wed, 27 Jan 2016 16:04:19 +0000 (11:04 -0500)]
drm/amdgpu: only move pt bos in LRU list on success

This fixes a race condition in the error case: since the pt bos have not
necessarily been reserved in case of an error, we could move a pt bo that
is currently in the middle of being evicted/moved by another process,
which then resulted in a BUG_ON in ttm_bo_add_to_lru.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
8 years agoMerge tag 'usb-serial-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/johan...
Greg Kroah-Hartman [Thu, 28 Jan 2016 16:32:42 +0000 (08:32 -0800)]
Merge tag 'usb-serial-4.5-rc2' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.5-rc2

Here are two fixes of crashes in the visor driver that could be
triggered using bad (malicious) descriptors, a fix for two memory leaks
in the new mxu11x0 driver, and an interface-blacklist fix for the option
driver.

Included are also some new device ids.

Signed-off-by: Johan Hovold <johan@kernel.org>
8 years agopowerpc/mm: Fixup _HPAGE_CHG_MASK
Aneesh Kumar K.V [Wed, 27 Jan 2016 06:34:20 +0000 (12:04 +0530)]
powerpc/mm: Fixup _HPAGE_CHG_MASK

This was wrongly updated by commit 7aa9a23c69ea ("powerpc, thp: remove
infrastructure for handling splitting PMDs") during the last merge
window. Fix it up.

This could lead to incorrect behaviour in THP and/or mprotect(), at a
minimum.

Fixes: 7aa9a23c69ea ("powerpc, thp: remove infrastructure for handling splitting PMDs")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agopowerpc/perf: Remove PPMU_HAS_SSLOT flag for Power8
Madhavan Srinivasan [Mon, 25 Jan 2016 08:33:46 +0000 (14:03 +0530)]
powerpc/perf: Remove PPMU_HAS_SSLOT flag for Power8

Commit 7a7868326d77 ("powerpc/perf: Add an explict flag indicating
presence of SLOT field") introduced the PPMU_HAS_SSLOT flag to remove
the assumption that MMCRA[SLOT] was present when PPMU_ALT_SIPR was not
set.

That commit's changelog also mentions that Power8 does not support
MMCRA[SLOT]. However when the Power8 PMU support was merged, it
errnoeously included the PPMU_HAS_SSLOT flag.

So remove PPMU_HAS_SSLOT from the Power8 flags.

mpe: On systems where MMCRA[SLOT] exists, the field occupies bits 37:39
(IBM numbering). On Power8 bit 37 is reserved, and 38:39 overlap with
the high bits of the Threshold Event Counter Mantissa. I am not aware of
any published events which use the threshold counting mechanism, which
would cause the mantissa bits to be set. So in practice this bug is
unlikely to trigger.

Fixes: e05b9b9e5c10 ("powerpc/perf: Power8 PMU support")
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agoALSA: dummy: Disable switching timer backend via sysfs
Takashi Iwai [Thu, 28 Jan 2016 06:54:16 +0000 (07:54 +0100)]
ALSA: dummy: Disable switching timer backend via sysfs

ALSA dummy driver can switch the timer backend between system timer
and hrtimer via its hrtimer module option.  This can be also switched
dynamically via sysfs, but it may lead to a memory corruption when
switching is done while a PCM stream is running; the stream instance
for the newly switched timer method tries to access the memory that
was allocated by another timer method although the sizes differ.

As the simplest fix, this patch just disables the switch via sysfs by
dropping the writable bit.

BugLink: http://lkml.kernel.org/r/CACT4Y+ZGEeEBntHW5WHn2GoeE0G_kRrCmUh6=dWyy-wfzvuJLg@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: timer: fix SND_PCM_TIMER Kconfig text
Randy Dunlap [Thu, 28 Jan 2016 02:04:10 +0000 (18:04 -0800)]
ALSA: timer: fix SND_PCM_TIMER Kconfig text

Fix spelling and typos for SND_PCM_TIMER.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agohwmon: (fam15h_power) Add bit masking for tdp_limit
Gioh Kim [Wed, 27 Jan 2016 11:02:09 +0000 (12:02 +0100)]
hwmon: (fam15h_power) Add bit masking for tdp_limit

Add bit masking to read ApmTdpLimit precisely

Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
8 years agoMerge tag 'seccomp-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
James Morris [Wed, 27 Jan 2016 23:53:54 +0000 (10:53 +1100)]
Merge tag 'seccomp-4.5-rc2' of git://git./linux/kernel/git/kees/linux into for-linus

8 years agoKEYS: Only apply KEY_FLAG_KEEP to a key if a parent keyring has it set
David Howells [Wed, 27 Jan 2016 01:02:03 +0000 (01:02 +0000)]
KEYS: Only apply KEY_FLAG_KEEP to a key if a parent keyring has it set

KEY_FLAG_KEEP should only be applied to a key if the keyring it is being
linked into has KEY_FLAG_KEEP set.

To this end, partially revert the following patch:

commit 1d6d167c2efcfe9539d9cffb1a1be9c92e39c2c0
Author: Mimi Zohar <zohar@linux.vnet.ibm.com>
Date:   Thu Jan 7 07:46:36 2016 -0500
KEYS: refcount bug fix

to undo the change that made it unconditional (Mimi got it right the first
time).

Without undoing this change, it becomes impossible to delete, revoke or
invalidate keys added to keyrings through __key_instantiate_and_link()
where the keyring has itself been linked to.  To test this, run the
following command sequence:

    keyctl newring foo @s
    keyctl add user a a %:foo
    keyctl unlink %user:a %:foo
    keyctl clear %:foo

With the commit mentioned above the third and fourth commands fail with
EPERM when they should succeed.

Reported-by: Stephen Gallager <sgallagh@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
cc: Mimi Zohar <zohar@linux.vnet.ibm.com>
cc: keyrings@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
8 years agocpufreq: cpufreq-dt: avoid uninitialized variable warnings:
Arnd Bergmann [Mon, 25 Jan 2016 15:45:48 +0000 (16:45 +0100)]
cpufreq: cpufreq-dt: avoid uninitialized variable warnings:

gcc warns quite a bit about values returned from allocate_resources()
in cpufreq-dt.c:

cpufreq-dt.c: In function 'cpufreq_init':
cpufreq-dt.c:327:6: error: 'cpu_dev' may be used uninitialized in this function [-Werror=maybe-uninitialized]
cpufreq-dt.c:197:17: note: 'cpu_dev' was declared here
cpufreq-dt.c:376:2: error: 'cpu_clk' may be used uninitialized in this function [-Werror=maybe-uninitialized]
cpufreq-dt.c:199:14: note: 'cpu_clk' was declared here
cpufreq-dt.c: In function 'dt_cpufreq_probe':
cpufreq-dt.c:461:2: error: 'cpu_clk' may be used uninitialized in this function [-Werror=maybe-uninitialized]
cpufreq-dt.c:447:14: note: 'cpu_clk' was declared here

The problem is that it's slightly hard for gcc to follow return
codes across PTR_ERR() calls.

This patch uses explicit assignments to the "ret" variable to make
it easier for gcc to verify that the code is actually correct,
without the need to add a bogus initialization.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agocpufreq: pxa2xx: fix pxa_cpufreq_change_voltage prototype
Arnd Bergmann [Mon, 25 Jan 2016 15:44:38 +0000 (16:44 +0100)]
cpufreq: pxa2xx: fix pxa_cpufreq_change_voltage prototype

There are two definitions of pxa_cpufreq_change_voltage, with slightly
different prototypes after one of them had its argument marked 'const'.
Now the other one (for !CONFIG_REGULATOR) produces a harmless warning:

drivers/cpufreq/pxa2xx-cpufreq.c: In function 'pxa_set_target':
drivers/cpufreq/pxa2xx-cpufreq.c:291:36: warning: passing argument 1 of 'pxa_cpufreq_change_voltage' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   ret = pxa_cpufreq_change_voltage(&pxa_freq_settings[idx]);
                                    ^
drivers/cpufreq/pxa2xx-cpufreq.c:205:12: note: expected 'struct pxa_freqs *' but argument is of type 'const struct pxa_freqs *'
 static int pxa_cpufreq_change_voltage(struct pxa_freqs *pxa_freq)
            ^

This changes the prototype in the same way as the other, which
avoids the warning.

Fixes: 03c229906311 (cpufreq: pxa: make pxa_freqs arrays const)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.2+ <stable@vger.kernel.org> # 4.2+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoPM: APM_EMULATION does not depend on PM
Arnd Bergmann [Mon, 25 Jan 2016 15:48:28 +0000 (16:48 +0100)]
PM: APM_EMULATION does not depend on PM

The APM emulation code does multiple things, and some of them depend on
PM_SLEEP, while the battery management does not. However, selecting
the symbol like SHARPSL_PM does causes a Kconfig warning:

warning: (SHARPSL_PM && PMAC_APM_EMU) selects APM_EMULATION which has unmet direct dependencies (PM && SYS_SUPPORTS_APM_EMULATION)

From all I can tell, this is completely harmless, and we can simply allow
APM_EMULATION to be enabled here, even if PM is not.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agocpufreq: Use list_is_last() to check last entry of the policy list
Gautham R Shenoy [Wed, 27 Jan 2016 06:32:26 +0000 (12:02 +0530)]
cpufreq: Use list_is_last() to check last entry of the policy list

Currently next_policy() explicitly checks if a policy is the last
policy in the cpufreq_policy_list. Use the standard list_is_last
primitive instead.

Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agocpufreq: Fix NULL reference crash while accessing policy->governor_data
Viresh Kumar [Mon, 25 Jan 2016 17:03:46 +0000 (22:33 +0530)]
cpufreq: Fix NULL reference crash while accessing policy->governor_data

There is a race discovered by Juri, where we are able to:
- create and read a sysfs file before policy->governor_data is being set
  to a non NULL value.
  OR
- set policy->governor_data to NULL, and reading a file before being
  destroyed.

And so such a crash is reported:

Unable to handle kernel NULL pointer dereference at virtual address 0000000c
pgd = edfc8000
[0000000c] *pgd=bfc8c835
Internal error: Oops: 17 [#1] SMP ARM
Modules linked in:
CPU: 4 PID: 1730 Comm: cat Not tainted 4.5.0-rc1+ #463
Hardware name: ARM-Versatile Express
task: ee8e8480 ti: ee930000 task.ti: ee930000
PC is at show_ignore_nice_load_gov_pol+0x24/0x34
LR is at show+0x4c/0x60
pc : [<c058f1bc>]    lr : [<c058ae88>]    psr: a0070013
sp : ee931dd0  ip : ee931de0  fp : ee931ddc
r10: ee4bc290  r9 : 00001000  r8 : ef2cb000
r7 : ee4bc200  r6 : ef2cb000  r5 : c0af57b0  r4 : ee4bc2e0
r3 : 00000000  r2 : 00000000  r1 : c0928df4  r0 : ef2cb000
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c5387d  Table: adfc806a  DAC: 00000051
Process cat (pid: 1730, stack limit = 0xee930210)
Stack: (0xee931dd0 to 0xee932000)
1dc0:                                     ee931dfc ee931de0 c058ae88 c058f1a4
1de0: edce3bc0 c07bfca4 edce3ac0 00001000 ee931e24 ee931e00 c01fcb90 c058ae48
1e00: 00000001 edce3bc0 00000000 00000001 ee931e50 ee8ff480 ee931e34 ee931e28
1e20: c01fb33c c01fcb0c ee931e8c ee931e38 c01a5210 c01fb314 ee931e9c ee931e48
1e40: 00000000 edce3bf0 befe4a00 ee931f78 00000000 00000000 000001e4 00000000
1e60: c00545a8 edce3ac0 00001000 00001000 befe4a00 ee931f78 00000000 00001000
1e80: ee931ed4 ee931e90 c01fbed8 c01a5038 ed085a58 00020000 00000000 00000000
1ea0: c0ad72e4 ee931f78 ee8ff488 ee8ff480 c077f3fc 00001000 befe4a00 ee931f78
1ec0: 00000000 00001000 ee931f44 ee931ed8 c017c328 c01fbdc4 00001000 00000000
1ee0: ee8ff480 00001000 ee931f44 ee931ef8 c017c65c c03deb10 ee931fac ee931f08
1f00: c0009270 c001f290 c0a8d968 ef2cb000 ef2cb000 ee8ff480 00000020 ee8ff480
1f20: ee8ff480 befe4a00 00001000 ee931f78 00000000 00000000 ee931f74 ee931f48
1f40: c017d1ec c017c2f8 c019c724 c019c684 ee8ff480 ee8ff480 00001000 befe4a00
1f60: 00000000 00000000 ee931fa4 ee931f78 c017d2a8 c017d160 00000000 00000000
1f80: 000a9f20 00001000 befe4a00 00000003 c000ffe4 ee930000 00000000 ee931fa8
1fa0: c000fe40 c017d264 000a9f20 00001000 00000003 befe4a00 00001000 00000000
Unable to handle kernel NULL pointer dereference at virtual address 0000000c
1fc0: 000a9f20 00001000 befe4a00 00000003 00000000 00000000 00000003 00000001
pgd = edfc4000
[0000000c] *pgd=bfcac835
1fe0: 00000000 befe49dc 000197f8 b6e35dfc 60070010 00000003 3065b49d 134ac2c9

[<c058f1bc>] (show_ignore_nice_load_gov_pol) from [<c058ae88>] (show+0x4c/0x60)
[<c058ae88>] (show) from [<c01fcb90>] (sysfs_kf_seq_show+0x90/0xfc)
[<c01fcb90>] (sysfs_kf_seq_show) from [<c01fb33c>] (kernfs_seq_show+0x34/0x38)
[<c01fb33c>] (kernfs_seq_show) from [<c01a5210>] (seq_read+0x1e4/0x4e4)
[<c01a5210>] (seq_read) from [<c01fbed8>] (kernfs_fop_read+0x120/0x1a0)
[<c01fbed8>] (kernfs_fop_read) from [<c017c328>] (__vfs_read+0x3c/0xe0)
[<c017c328>] (__vfs_read) from [<c017d1ec>] (vfs_read+0x98/0x104)
[<c017d1ec>] (vfs_read) from [<c017d2a8>] (SyS_read+0x50/0x90)
[<c017d2a8>] (SyS_read) from [<c000fe40>] (ret_fast_syscall+0x0/0x1c)
Code: e5903044 e1a00001 e3081df4 e34c1092 (e593300c)
---[ end trace 5994b9a5111f35ee ]---

Fix that by making sure, policy->governor_data is updated at the right
places only.

Cc: 4.2+ <stable@vger.kernel.org> # 4.2+
Reported-and-tested-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agocpuidle: coupled: remove unused define cpuidle_coupled_lock
Anders Roxell [Wed, 27 Jan 2016 19:26:54 +0000 (20:26 +0100)]
cpuidle: coupled: remove unused define cpuidle_coupled_lock

This was found with the -RT patch enabled, but the fix should apply to
non-RT also.

Used multi_v7_defconfig+PREEMPT_RT_FULL=y and this caused a compilation
warning without this fix:
../drivers/cpuidle/coupled.c:122:21: warning: 'cpuidle_coupled_lock'
defined but not used [-Wunused-variable]

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoPM / Domains: Fix typo in comment
Moritz Fischer [Wed, 27 Jan 2016 07:29:27 +0000 (08:29 +0100)]
PM / Domains: Fix typo in comment

Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>