firefly-linux-kernel-4.4.55.git
10 years agoGFS2: Only wait for demote when last holder is dequeued
Bob Peterson [Fri, 20 Jun 2014 13:36:41 +0000 (09:36 -0400)]
GFS2: Only wait for demote when last holder is dequeued

Function gfs2_glock_dq_wait is supposed to dequeue a glock and then
wait for the lock to be demoted. The problem is, if this is a shared
lock, its demote will depend on the other holders, which means you
might end up waiting forever because the other process is blocked.
This problem is especially apparent when dealing with nested flocks.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
10 years agoMerge tag 'pm+acpi-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 20 Jun 2014 04:58:57 +0000 (18:58 -1000)]
Merge tag 'pm+acpi-3.16-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are fixes mostly (ia64 regression related to the ACPI
  enumeration of devices, cpufreq regressions, fix for I2C controllers
  included in Intel SoCs, mvebu cpuidle driver fix related to sysfs)
  plus additional kernel command line arguments from Kees to make it
  possible to build kernel images with hibernation and the kernel
  address space randomization included simultaneously, a new ACPI
  battery driver quirk for a system with a broken BIOS and a couple of
  ACPI core cleanups.

  Specifics:

   - Fix for an ia64 regression introduced during the 3.11 cycle by a
     commit that modified the hardware initialization ordering and made
     device discovery fail on some systems.

   - Fix for a build problem on systems where the cpufreq-cpu0 driver is
     built-in and the cpu-thermal driver is modular from Arnd Bergmann.

   - Fix for a recently introduced computational mistake in the
     intel_pstate driver that leads to excessive rounding errors from
     Doug Smythies.

   - Fix for a failure code path in cpufreq_update_policy() that fails
     to unlock the locks acquired previously from Aaron Plattner.

   - Fix for the cpuidle mvebu driver to use shorter state names which
     will prevent the sysfs interface from returning mangled strings.
     From Gregory Clement.

   - ACPI LPSS driver fix to make sure that the I2C controllers included
     in BayTrail SoCs are not held in the reset state while they are
     being probed from Mika Westerberg.

   - New kernel command line arguments making it possible to build
     kernel images with hibernation and kASLR included at the same time
     and to select which of them will be used via the command line (they
     are still functionally mutually exclusive, though).  From Kees
     Cook.

   - ACPI battery driver quirk for Acer Aspire V5-573G that fails to
     send battery status change notifications timely from Alexander
     Mezin.

   - Two ACPI core cleanups from Christoph Jaeger and Fabian Frederick"

* tag 'pm+acpi-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: mvebu: Fix the name of the states
  cpufreq: unlock when failing cpufreq_update_policy()
  intel_pstate: Correct rounding in busy calculation
  ACPI: use kstrto*() instead of simple_strto*()
  ACPI / processor replace __attribute__((packed)) by __packed
  ACPI / battery: add quirk for Acer Aspire V5-573G
  ACPI / battery: use callback for setting up quirks
  ACPI / LPSS: Take I2C host controllers out of reset
  x86, kaslr: boot-time selectable with hibernation
  PM / hibernate: introduce "nohibernate" boot parameter
  cpufreq: cpufreq-cpu0: fix CPU_THERMAL dependency
  ACPI / ia64 / sba_iommu: Restore the working initialization ordering

10 years agoMerge tag 'sound-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 20 Jun 2014 04:49:37 +0000 (18:49 -1000)]
Merge tag 'sound-3.16-rc2' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "The significant part here is a few security fixes for ALSA core
  control API by Lars.  Besides that, there are a few fixes for ASoC
  sigmadsp (again by Lars) for building properly, and small fixes for
  ASoC rsnd, MMP, PXA and FSL, in addition to a fix for bogus WARNING in
  i915/HD-audio binding"

* tag 'sound-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: control: Make sure that id->index does not overflow
  ALSA: control: Handle numid overflow
  ALSA: control: Don't access controls outside of protected regions
  ALSA: control: Fix replacing user controls
  ALSA: control: Protect user controls against concurrent access
  drm/i915, HD-audio: Don't continue probing when nomodeset is given
  ASoC: fsl: Fix build problem
  ASoC: rsnd: fixup index of src/dst mod when capture
  ASoC: fsl_spdif: Fix integer overflow when calculating divisors
  ASoC: fsl_spdif: Fix incorrect usage of regmap_read()
  ASoC: dapm: Make sure register value is in sync with DAPM kcontrol state
  ASoC: sigmadsp: Split regmap and I2C support into separate modules
  ASoC: MMP audio needs sram support
  ASoC: pxa: add I2C dependencies as needed

10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 20 Jun 2014 04:40:36 +0000 (18:40 -1000)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "This looks bigger than it is, as one of the nouveau firmware fixes
  ("drm/gf100-/gr: report class data to host on fwmthd failure")
  regenerates a bunch of the firmware files after changing the assembly
  by a few lines, without that, its more of a

    36 files changed, 370 insertions(+), 129 deletions(-)

  It contains some vt.c fixes acked by Greg, for rare hard hangs on i915
  loading, that also fixes hangs on reload and spurious register write
  errors.

  drm core: one fix for uninit memory

  nouveau: displayport rework caused a few regressions, Ben has been
     fixing them as the appear, along with some other fixes

  radeon: pageflipping regression fix, deep color fix, mode validation
     fixes

  i915: fbc disable, vga console kick off, backlight fix, divide-by-zero
     fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (33 commits)
  drm: fix uninitialized acquire_ctx fields (v2)
  drm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance
  Revert "drm/radeon: remove drm_vblank_get|put from pflip handling"
  drm/radeon: improve dvi_mode_valid
  drm/radeon: update mode_valid testing for DP
  drm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+
  drm/nouveau/disp: fix oops in destructor with headless cards
  drm/gf117/i2c: no aux channels on this chipset
  drm/nouveau/doc: update the thermal documentation
  drm/nouveau/pwr: fix typo in fifo wrap handling
  drm/nv50/disp: fix a potential oops in supervisor handling
  drm/nouveau/disp/dp: don't touch link config after success
  drm/nouveau/kms: reference vblank for crtc during pageflip.
  drm/gk104/fb/ram: fixups from an earlier search+replace
  drm/nv50/gr: remove an unneeded write while initialising PGRAPH
  drm/nv50/gr: fix overlap while zeroing zcull regions
  drm/gf100-/gr: report class data to host on fwmthd failure
  drm/gk104/ibus: increase various random timeouts
  drm/gk104/clk: only touch divider for mode we'll be using
  drm/radeon: Bypass hw lut's for > 8 bpc framebuffer scanout.
  ...

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 20 Jun 2014 03:56:43 +0000 (17:56 -1000)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A smaller collection of fixes for the block core that would be nice to
  have in -rc2.  This pull request contains:

   - Fixes for races in the wait/wakeup logic used in blk-mq from
     Alexander.  No issues have been observed, but it is definitely a
     bit flakey currently.  Alternatively, we may drop the cyclic
     wakeups going forward, but that needs more testing.

   - Some cleanups from Christoph.

   - Fix for an oops in null_blk if queue_mode=1 and softirq completions
     are used.  From me.

   - A fix for a regression caused by the chunk size setting.  It
     inadvertently used max_hw_sectors instead of max_sectors, which is
     incorrect, and causes hangs on btrfs multi-disk setups (where hw
     sectors apparently isn't set).  From me.

   - Removal of WQ_POWER_EFFICIENT in the kblockd creation.  This was a
     recent addition as well, but it actually breaks blk-mq which relies
     on strict scheduling.  If the workqueue power_efficient mode is
     turned on, this breaks blk-mq.  From Matias.

   - null_blk module parameter description fix from Mike"

* 'for-linus' of git://git.kernel.dk/linux-block:
  blk-mq: bitmap tag: fix races in bt_get() function
  blk-mq: bitmap tag: fix race on blk_mq_bitmap_tags::wake_cnt
  blk-mq: bitmap tag: fix races on shared ::wake_index fields
  block: blk_max_size_offset() should check ->max_sectors
  null_blk: fix softirq completions for queue_mode == 1
  blk-mq: merge blk_mq_drain_queue and __blk_mq_drain_queue
  blk-mq: properly drain stopped queues
  block: remove WQ_POWER_EFFICIENT from kblockd
  null_blk: fix name and description of 'queue_mode' module parameter
  block: remove elv_abort_queue and blk_abort_flushes

10 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Fri, 20 Jun 2014 03:53:20 +0000 (17:53 -1000)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "A first set of bug fixes that didn't make it for the merge window, and
  two Kconfig cleanups that still make sense at this point.

  Unfortunately, one of the two cleanups caused an unintended change in
  the original version, so we had to revert one part of it and do some
  more testing to ensure the rest is really fine.  There was also a
  last-minute rebase of the patches to remove another bad commit"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: use menuconfig for sub-arch menus
  ARM: multi_v7_defconfig: re-enable SDHCI drivers
  ARM: EXYNOS: Fix compilation warning
  ARM: exynos: move sysram info to exynos.c
  ARM: dts: Specify the NAND ECC scheme explicitly on Armada 385 DB board
  ARM: dts: Specify the NAND ECC scheme explicitly on Armada 375 DB board
  ARM: exynos: cleanup kconfig option display
  misc: vexpress: fix error handling vexpress_syscfg_regmap_init()
  ARM: Remove ARCH_HAS_CPUFREQ config option
  ARM: integrator: fix section mismatch problem
  ARM: mvebu: DT: fix OpenBlocks AX3-4 RAM size
  ARM: samsung: make SAMSUNG_DMADEV optional
  remoteproc: da8xx: don't select CMA on no-MMU
  bus/arm-cci: add dependency on OF && CPU_V7
  ARM: keystone requires ARM_PATCH_PHYS_VIRT
  ARM: omap2: fix am43xx dependency on l2x0 cache

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 19 Jun 2014 17:58:28 +0000 (07:58 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security

Pull security maintainership update from James Morris:
 "Add Serge Hallyn as security subsystem co-maintainer"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: add Serge Hallyn as a maintainer

10 years agoMerge tag 'stable/for-linus-3.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Thu, 19 Jun 2014 17:53:27 +0000 (07:53 -1000)]
Merge tag 'stable/for-linus-3.16-rc1-tag' of git://git./linux/kernel/git/xen/tip

Pull Xen fixes from David Vrabel:
 "Xen regression and PVH fixes for 3.16-rc1

   - fix dom0 PVH memory setup on latest unstable Xen releases
   - fix 64-bit x86 PV guest boot failure on Xen 3.1 and earlier
   - fix resume regression on non-PV (auto-translated physmap) guests"

* tag 'stable/for-linus-3.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/grant-table: fix suspend for non-PV guests
  x86/xen: no need to explicitly register an NMI callback
  Revert "xen/pvh: Update E820 to work with PVH (v2)"
  x86/xen: fix memory setup for PVH dom0

10 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 19 Jun 2014 17:51:45 +0000 (07:51 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "These are primarily bug fixes with a performance improvement patch for
  the GHASH crypto algorithm (which went in during this merging window)
  and dts/defconfig/Kconfig updates.

   - ftrace_return_addr() macro fix for arm (introduced earlier via the
     arm64 tree)
   - stack alignment exception entry code fix
   - GHASH crypto algorithm fix and performance improvement
   - CMA buffer limited to 32-bit (until a better way to describe the
     system topology in DT)
   - UAPI sigcontext.h build fix
   - __kernel_old_{gid,uid}_t definitions fix (affecting 32-bit LTP)
   - ptrace fixes (kernel fault and 32-bit arm core dump)
   - pte_mknotpresent() fix
   - dts updates (APM SoC)
   - defconfig and Kconfig update"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: remove broken &= operator from pmd_mknotpresent
  arm64: fix build error in sigcontext.h
  arm64: dts: Add more serial port nodes in APM X-Gene device tree
  arm64/dma: Removing ARCH_HAS_DMA_GET_REQUIRED_MASK macro
  arm64: ptrace: fix empty registers set in prstatus of aarch32 process core
  arm64: uid16: fix __kernel_old_{gid,uid}_t definitions
  arm64: ptrace: change fs when passing kernel pointer to regset code
  arm64: Limit the CMA buffer to 32-bit if ZONE_DMA
  arm/ftrace: fix ftrace_return_addr() to ftrace_return_address()
  arm64/crypto: improve performance of GHASH algorithm
  arm64/crypto: fix data corruption bug in GHASH algorithm
  arm64: defconfig update for LTP
  arm64: ftrace: Fix comment typo 'CONFIG_FUNCTION_GRAPH_FP_TEST'
  arm64: add ARCH_HAS_OPP to allow enabling OPP library
  arm64: restore alphabetic order in Kconfig
  arm64: Bug fix in stack alignment exception

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next
Linus Torvalds [Thu, 19 Jun 2014 17:50:07 +0000 (07:50 -1000)]
Merge git://git./linux/kernel/git/davem/sparc-next

Pull sparc fixes from David Miller:
 "Sparc sparse fixes from Sam Ravnborg"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (67 commits)
  sparc64: fix sparse warnings in int_64.c
  sparc64: fix sparse warning in ftrace.c
  sparc64: fix sparse warning in kprobes.c
  sparc64: fix sparse warning in kgdb_64.c
  sparc64: fix sparse warnings in compat_audit.c
  sparc64: fix sparse warnings in init_64.c
  sparc64: fix sparse warnings in aes_glue.c
  sparc: fix sparse warnings in smp_32.c + smp_64.c
  sparc64: fix sparse warnings in perf_event.c
  sparc64: fix sparse warnings in kprobes.c
  sparc64: fix sparse warning in tsb.c
  sparc64: clean up compat_sigset_t.seta handling
  sparc64: fix sparse "Should it be static?" warnings in signal32.c
  sparc64: fix sparse warnings in sys_sparc32.c
  sparc64: fix sparse warning in pci.c
  sparc64: fix sparse warnings in smp_64.c
  sparc64: fix sparse warning in prom_64.c
  sparc64: fix sparse warning in btext.c
  sparc64: fix sparse warnings in sys_sparc_64.c + unaligned_64.c
  sparc64: fix sparse warning in process_64.c
  ...

Conflicts:
arch/sparc/include/asm/pgtable_64.h

10 years agoMerge branches 'pm-cpufreq' and 'pm-cpuidle'
Rafael J. Wysocki [Thu, 19 Jun 2014 12:41:22 +0000 (14:41 +0200)]
Merge branches 'pm-cpufreq' and 'pm-cpuidle'

* pm-cpufreq:
  cpufreq: unlock when failing cpufreq_update_policy()
  intel_pstate: Correct rounding in busy calculation
  cpufreq: cpufreq-cpu0: fix CPU_THERMAL dependency

* pm-cpuidle:
  cpuidle: mvebu: Fix the name of the states

10 years agoMerge branch 'pm-sleep'
Rafael J. Wysocki [Thu, 19 Jun 2014 12:41:11 +0000 (14:41 +0200)]
Merge branch 'pm-sleep'

* pm-sleep:
  x86, kaslr: boot-time selectable with hibernation
  PM / hibernate: introduce "nohibernate" boot parameter

10 years agoMerge branches 'acpi-general', 'acpi-processor', 'acpi-lpss' and 'acpi-battery'
Rafael J. Wysocki [Thu, 19 Jun 2014 12:40:48 +0000 (14:40 +0200)]
Merge branches 'acpi-general', 'acpi-processor', 'acpi-lpss' and 'acpi-battery'

* acpi-general:
  ACPI: use kstrto*() instead of simple_strto*()

* acpi-processor:
  ACPI / processor replace __attribute__((packed)) by __packed

* acpi-lpss:
  ACPI / LPSS: Take I2C host controllers out of reset

* acpi-battery:
  ACPI / battery: add quirk for Acer Aspire V5-573G
  ACPI / battery: use callback for setting up quirks

10 years agoMerge tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Thu, 19 Jun 2014 00:54:35 +0000 (10:54 +1000)]
Merge tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel into drm-next

First round of fixes for 3.16-rc, mostly cc: stable, and the vt/vgacon
fixes from Daniel [1] to avoid hangs and unclaimed register errors on
module load/reload.

* tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel:
  drm/i915/bdw: remove erroneous chv specific workarounds from bdw code
  drm/i915: fix possible refcount leak when resetting forcewake
  drm/i915: Reorder semaphore deadlock check
  drm/i95: Initialize active ring->pid to -1
  drm/i915: set backlight duty cycle after backlight enable for gen4
  drm/i915: Avoid div-by-zero when pixel_multiplier is zero
  drm/i915: Disable FBC by default also on Haswell and later
  drm/i915: Kick out vga console
  drm/i915: Fixup global gtt cleanup
  vt: Don't ignore unbind errors in vt_unbind
  vt: Fix up unregistration of vt drivers
  vt: Fix replacement console check when unbinding

10 years agodrm: fix uninitialized acquire_ctx fields (v2)
Rob Clark [Sat, 7 Jun 2014 14:55:39 +0000 (10:55 -0400)]
drm: fix uninitialized acquire_ctx fields (v2)

The acquire ctx will typically be declared on the stack, which means we
could have garbage values for any uninitialized field.  In this case, it
was triggering WARN_ON()s because 'contended' had garbage value.

Go ahead and use memset() to be more future-proof.

v2: now with extra brown paper bag

Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoMerge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 19 Jun 2014 00:25:49 +0000 (10:25 +1000)]
Merge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-next

mode validation, deep color and pageflipping fixes.

* 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance
  Revert "drm/radeon: remove drm_vblank_get|put from pflip handling"
  drm/radeon: improve dvi_mode_valid
  drm/radeon: update mode_valid testing for DP
  drm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+

10 years agodrm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance
Michel Dänzer [Tue, 17 Jun 2014 10:12:04 +0000 (19:12 +0900)]
drm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance

Fixes a regression in 3.16-rc1 compared to 3.15.

The unbalanced calls would presumably result in the page flip interrupts
never getting disabled once they are enabled.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agoRevert "drm/radeon: remove drm_vblank_get|put from pflip handling"
Michel Dänzer [Tue, 17 Jun 2014 10:12:03 +0000 (19:12 +0900)]
Revert "drm/radeon: remove drm_vblank_get|put from pflip handling"

This reverts commit 75f36d861957cb05b7889af24c8cd4a789398304.

drm_vblank_get() is necessary to ensure the DRM vblank counter value is
up to date in drm_send_vblank_event().

Seems to fix weston hangs waiting for page flips to complete.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: improve dvi_mode_valid
Alex Deucher [Mon, 16 Jun 2014 21:46:57 +0000 (17:46 -0400)]
drm/radeon: improve dvi_mode_valid

Make sure we have an HDMI monitor before validating modes with
clocks >165 Mhz on single link connections.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update mode_valid testing for DP
Alex Deucher [Mon, 16 Jun 2014 21:42:34 +0000 (17:42 -0400)]
drm/radeon: update mode_valid testing for DP

When we have a passive adapter validate the clocks
against the HMDI/DVI limits.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+
Mario Kleiner [Sun, 15 Jun 2014 18:36:29 +0000 (20:36 +0200)]
drm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+

Need to use the adjusted clock on dce8 as well.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=80029

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agocpuidle: mvebu: Fix the name of the states
Gregory CLEMENT [Wed, 18 Jun 2014 12:37:43 +0000 (14:37 +0200)]
cpuidle: mvebu: Fix the name of the states

The length name of the states 2 was too long to fit in the allocated
string (limited to 16 bytes). This lead to improper string displayed
through sysfs.

This patch shorten the name by removing the reference to Marvell and
to the CPU as both are implicit. For coherency the same change have
been done for the states 1.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agocpufreq: unlock when failing cpufreq_update_policy()
Aaron Plattner [Wed, 18 Jun 2014 18:27:32 +0000 (11:27 -0700)]
cpufreq: unlock when failing cpufreq_update_policy()

Commit bd0fa9bb455d introduced a failure path to cpufreq_update_policy() if
cpufreq_driver->get(cpu) returns NULL.  However, it jumps to the 'no_policy'
label, which exits without unlocking any of the locks the function acquired
earlier.  This causes later calls into cpufreq to hang.

Fix this by creating a new 'unlock' label and jumping to that instead.

Fixes: bd0fa9bb455d ("cpufreq: Return error if ->get() failed in cpufreq_update_policy()")
Link: https://devtalk.nvidia.com/default/topic/751903/kernel-3-15-and-nv-drivers-337-340-failed-to-initialize-the-nvidia-kernel-module-gtx-550-ti-/
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Cc: 3.15+ <stable@vger.kernel.org> # 3.15+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoarm64: mm: remove broken &= operator from pmd_mknotpresent
Will Deacon [Wed, 18 Jun 2014 13:06:27 +0000 (14:06 +0100)]
arm64: mm: remove broken &= operator from pmd_mknotpresent

This should be a plain old '&' and could easily lead to undefined
behaviour if the target of a pmd_mknotpresent invocation was the same
as the parameter.

Fixes: 9c7e535fcc17 (arm64: mm: Route pmd thp functions through pte equivalents)
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org> # v3.15
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoMerge branch 'topic/core-vuln-fixes' into for-linus
Takashi Iwai [Wed, 18 Jun 2014 14:38:45 +0000 (16:38 +0200)]
Merge branch 'topic/core-vuln-fixes' into for-linus

10 years agoMerge tag 'asoc-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Takashi Iwai [Wed, 18 Jun 2014 14:32:14 +0000 (16:32 +0200)]
Merge tag 'asoc-v3.16-rc1' of git://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.16

Quite a few build coverage fixes in here among the usual small driver
fixes includling the sigmadsp change from Lars - moving the driver to
separate modules per bus (which is basically just code motion) avoids
issues with some combinations of buses being enabled.

10 years agoALSA: control: Make sure that id->index does not overflow
Lars-Peter Clausen [Wed, 18 Jun 2014 11:32:35 +0000 (13:32 +0200)]
ALSA: control: Make sure that id->index does not overflow

The ALSA control code expects that the range of assigned indices to a control is
continuous and does not overflow. Currently there are no checks to enforce this.
If a control with a overflowing index range is created that control becomes
effectively inaccessible and unremovable since snd_ctl_find_id() will not be
able to find it. This patch adds a check that makes sure that controls with a
overflowing index range can not be created.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 years agoALSA: control: Handle numid overflow
Lars-Peter Clausen [Wed, 18 Jun 2014 11:32:34 +0000 (13:32 +0200)]
ALSA: control: Handle numid overflow

Each control gets automatically assigned its numids when the control is created.
The allocation is done by incrementing the numid by the amount of allocated
numids per allocation. This means that excessive creation and destruction of
controls (e.g. via SNDRV_CTL_IOCTL_ELEM_ADD/REMOVE) can cause the id to
eventually overflow. Currently when this happens for the control that caused the
overflow kctl->id.numid + kctl->count will also over flow causing it to be
smaller than kctl->id.numid. Most of the code assumes that this is something
that can not happen, so we need to make sure that it won't happen

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 years agoALSA: control: Don't access controls outside of protected regions
Lars-Peter Clausen [Wed, 18 Jun 2014 11:32:33 +0000 (13:32 +0200)]
ALSA: control: Don't access controls outside of protected regions

A control that is visible on the card->controls list can be freed at any time.
This means we must not access any of its memory while not holding the
controls_rw_lock. Otherwise we risk a use after free access.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 years agoALSA: control: Fix replacing user controls
Lars-Peter Clausen [Wed, 18 Jun 2014 11:32:32 +0000 (13:32 +0200)]
ALSA: control: Fix replacing user controls

There are two issues with the current implementation for replacing user
controls. The first is that the code does not check if the control is actually a
user control and neither does it check if the control is owned by the process
that tries to remove it. That allows userspace applications to remove arbitrary
controls, which can cause a user after free if a for example a driver does not
expect a control to be removed from under its feed.

The second issue is that on one hand when a control is replaced the
user_ctl_count limit is not checked and on the other hand the user_ctl_count is
increased (even though the number of user controls does not change). This allows
userspace, once the user_ctl_count limit as been reached, to repeatedly replace
a control until user_ctl_count overflows. Once that happens new controls can be
added effectively bypassing the user_ctl_count limit.

Both issues can be fixed by instead of open-coding the removal of the control
that is to be replaced to use snd_ctl_remove_user_ctl(). This function does
proper permission checks as well as decrements user_ctl_count after the control
has been removed.

Note that by using snd_ctl_remove_user_ctl() the check which returns -EBUSY at
beginning of the function if the control already exists is removed. This is not
a problem though since the check is quite useless, because the lock that is
protecting the control list is released between the check and before adding the
new control to the list, which means that it is possible that a different
control with the same settings is added to the list after the check. Luckily
there is another check that is done while holding the lock in snd_ctl_add(), so
we'll rely on that to make sure that the same control is not added twice.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 years agoALSA: control: Protect user controls against concurrent access
Lars-Peter Clausen [Wed, 18 Jun 2014 11:32:31 +0000 (13:32 +0200)]
ALSA: control: Protect user controls against concurrent access

The user-control put and get handlers as well as the tlv do not protect against
concurrent access from multiple threads. Since the state of the control is not
updated atomically it is possible that either two write operations or a write
and a read operation race against each other. Both can lead to arbitrary memory
disclosure. This patch introduces a new lock that protects user-controls from
concurrent access. Since applications typically access controls sequentially
than in parallel a single lock per card should be fine.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 years agoarm64: fix build error in sigcontext.h
Mark Salter [Wed, 11 Jun 2014 20:14:42 +0000 (21:14 +0100)]
arm64: fix build error in sigcontext.h

I'm seeing this build failure for arm64:

    CC [M]  Documentation/filesystems/configfs/configfs_example_macros.o
  In file included from /usr/include/bits/sigcontext.h:27:0,
                   from /usr/include/signal.h:340,
                   from /usr/include/sys/wait.h:30,
                   from Documentation/accounting/getdelays.c:24:
  .../linux/usr/include/asm/sigcontext.h:61:2: error: unknown type name ‘u64’
    u64 esr;
    ^
  make[2]: *** [Documentation/accounting/getdelays] Error 1

This was introduced by commit 15af1942dd61ee23:

  arm64: Expose ESR_EL1 information to user when SIGSEGV/SIGBUS

Using __u64 instead of u64 fixes the problem.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: dts: Add more serial port nodes in APM X-Gene device tree
Vinayak Kale [Wed, 26 Mar 2014 12:19:06 +0000 (12:19 +0000)]
arm64: dts: Add more serial port nodes in APM X-Gene device tree

APM X-Gene Storm SoC supports 4 serial ports. This patch adds device nodes
for serial ports 1 to 3 (a device node for serial port 0 is already present
in the dts file).
This patch also sets the compatible property of serial nodes to "ns16550a".

Signed-off-by: Vinayak Kale <vkale@apm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64/dma: Removing ARCH_HAS_DMA_GET_REQUIRED_MASK macro
Suravee Suthikulpanit [Fri, 6 Jun 2014 22:07:16 +0000 (23:07 +0100)]
arm64/dma: Removing ARCH_HAS_DMA_GET_REQUIRED_MASK macro

Arm64 does not define dma_get_required_mask() function.
Therefore, it should not define the ARCH_HAS_DMA_GET_REQUIRED_MASK.
This causes build errors in some device drivers (e.g. mpt2sas)

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
10 years agoarm64: ptrace: fix empty registers set in prstatus of aarch32 process core
Victor Kamensky [Tue, 3 Jun 2014 18:21:30 +0000 (19:21 +0100)]
arm64: ptrace: fix empty registers set in prstatus of aarch32 process core

Currently core file of aarch32 process prstatus note has empty
registers set. As result aarch32 core files create by V8 kernel are
not very useful.

It happens because compat_gpr_get and compat_gpr_set functions can
copy registers values to/from either kbuf or ubuf. ELF core file
collection function fill_thread_core_info calls compat_gpr_get
with kbuf set and ubuf set to 0. But current compat_gpr_get and
compat_gpr_set function handle copy to/from only ubuf case.

Fix is to handle kbuf and ubuf as two separate cases in similar
way as other functions like user_regset_copyout, user_regset_copyin do.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: uid16: fix __kernel_old_{gid,uid}_t definitions
Will Deacon [Mon, 2 Jun 2014 10:47:29 +0000 (11:47 +0100)]
arm64: uid16: fix __kernel_old_{gid,uid}_t definitions

Whilst native arm64 applications don't have the 16-bit UID/GID syscalls
wired up, compat tasks can still access them. The 16-bit wrappers for
these syscalls use __kernel_old_uid_t and __kernel_old_gid_t, which must
be 16-bit data types to maintain compatibility with the 16-bit UIDs used
by compat applications.

This patch defines 16-bit __kernel_old_{gid,uid}_t types for arm64
instead of using the 32-bit types provided by asm-generic.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: ptrace: change fs when passing kernel pointer to regset code
Will Deacon [Mon, 2 Jun 2014 10:47:23 +0000 (11:47 +0100)]
arm64: ptrace: change fs when passing kernel pointer to regset code

Our compat PTRACE_POKEUSR implementation simply passes the user data to
regset_copy_from_user after some simple range checking. Unfortunately,
the data in question has already been copied to the kernel stack by this
point, so the subsequent access_ok check fails and the ptrace request
returns -EFAULT. This causes problems tracing fork() with older versions
of strace.

This patch briefly changes the fs to KERNEL_DS, so that the access_ok
check passes even with a kernel address.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: Limit the CMA buffer to 32-bit if ZONE_DMA
Catalin Marinas [Fri, 13 Jun 2014 12:41:20 +0000 (13:41 +0100)]
arm64: Limit the CMA buffer to 32-bit if ZONE_DMA

When the CMA buffer is allocated, it is too early to know whether
devices will require ZONE_DMA memory. This patch limits the CMA buffer
to (DMA_BIT_MASK(32) + 1) if CONFIG_ZONE_DMA is enabled.

In addition, it computes the dma_to_phys(DMA_BIT_MASK(32)) before the
increment (no current functional change).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm/ftrace: fix ftrace_return_addr() to ftrace_return_address()
Steven Rostedt [Mon, 16 Jun 2014 14:25:29 +0000 (15:25 +0100)]
arm/ftrace: fix ftrace_return_addr() to ftrace_return_address()

The clean up of CALLER_ADDR*() functions required the archs to either
use the default __builtin_return_address(X) (where X > 0) or override
it with something the arch can use. To override it, the arch would
define ftrace_return_address(x).

The arm architecture requires this to be redefined but instead of
defining ftrace_return_address(x) it defined ftrace_return_addr(x).

Fixes: eed542d6962b (ftrace: Make CALLER_ADDRx macros more generic)
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64/crypto: improve performance of GHASH algorithm
Ard Biesheuvel [Mon, 16 Jun 2014 10:02:16 +0000 (11:02 +0100)]
arm64/crypto: improve performance of GHASH algorithm

This patches modifies the GHASH secure hash implementation to switch to a
faster, polynomial multiplication based reduction instead of one that uses
shifts and rotates.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64/crypto: fix data corruption bug in GHASH algorithm
Ard Biesheuvel [Mon, 16 Jun 2014 10:02:15 +0000 (11:02 +0100)]
arm64/crypto: fix data corruption bug in GHASH algorithm

This fixes a bug in the GHASH algorithm resulting in the calculated hash to be
incorrect if the input is presented in chunks whose size is not a multiple of
16 bytes.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: fdd2389457b2 ("arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: defconfig update for LTP
Catalin Marinas [Mon, 16 Jun 2014 10:11:23 +0000 (11:11 +0100)]
arm64: defconfig update for LTP

This patch adds several defconfig options required primarily by the LTP
test suite.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: ftrace: Fix comment typo 'CONFIG_FUNCTION_GRAPH_FP_TEST'
Paul Bolle [Wed, 11 Jun 2014 09:44:21 +0000 (10:44 +0100)]
arm64: ftrace: Fix comment typo 'CONFIG_FUNCTION_GRAPH_FP_TEST'

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: add ARCH_HAS_OPP to allow enabling OPP library
Sudeep Holla [Fri, 9 May 2014 09:33:02 +0000 (10:33 +0100)]
arm64: add ARCH_HAS_OPP to allow enabling OPP library

The Operating Performance Point (OPP) Layer library is a generic
library used by CPUFREQ and DEVFREQ. It can be enabled only on the
platforms that specify ARCH_HAS_OPP option.

This patch selects that option in order to allow ARM64 based platforms
to use OPP library.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: restore alphabetic order in Kconfig
Sudeep Holla [Fri, 9 May 2014 09:33:01 +0000 (10:33 +0100)]
arm64: restore alphabetic order in Kconfig

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: Bug fix in stack alignment exception
ChiaHao [Thu, 12 Jun 2014 14:32:33 +0000 (15:32 +0100)]
arm64: Bug fix in stack alignment exception

The value of ESR has been stored into x1, and should be directly pass to
do_sp_pc_abort function, "MOV x1, x25" is an extra operation and do_sp_pc_abort
will get the wrong value of ESR.

Signed-off-by: ChiaHao <andy.jhshiu@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
10 years agoxen/grant-table: fix suspend for non-PV guests
David Vrabel [Mon, 16 Jun 2014 10:12:03 +0000 (11:12 +0100)]
xen/grant-table: fix suspend for non-PV guests

Commit aa8532c32216ae07c3813b9aeb774517878a7573 (xen: refactor suspend
pre/post hooks) broke resuming PVHVM (auto-translated physmap) guests.

The gnttab_suspend() would clear the mapping for the grant table
frames, but the ->unmap_frames() call is only applicable to PV guests.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
10 years agox86/xen: no need to explicitly register an NMI callback
David Vrabel [Mon, 16 Jun 2014 11:07:00 +0000 (13:07 +0200)]
x86/xen: no need to explicitly register an NMI callback

Remove xen_enable_nmi() to fix a 64-bit guest crash when registering
the NMI callback on Xen 3.1 and earlier.

It's not needed since the NMI callback is set by a set_trap_table
hypercall (in xen_load_idt() or xen_write_idt_entry()).

It's also broken since it only set the current VCPU's callback.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
10 years agosecurity: add Serge Hallyn as a maintainer
James Morris [Wed, 18 Jun 2014 08:57:50 +0000 (18:57 +1000)]
security: add Serge Hallyn as a maintainer

Add Serge E. Hallyn <serge@hallyn.com> as a co-maintainer of the
security subsystem, to avoid having a single point of failure
in the development process.

Signed-off-by: James Morris <james.l.morris@oracle.com>
10 years agoMerge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Wed, 18 Jun 2014 05:50:58 +0000 (15:50 +1000)]
Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

couple more DP regression fixes.
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/disp: fix oops in destructor with headless cards
  drm/gf117/i2c: no aux channels on this chipset

10 years agodrm/nouveau/disp: fix oops in destructor with headless cards
Maarten Lankhorst [Tue, 17 Jun 2014 13:01:48 +0000 (15:01 +0200)]
drm/nouveau/disp: fix oops in destructor with headless cards

If init doesn't run then disp->outp might not be initialized, resulting
in an oops.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/gf117/i2c: no aux channels on this chipset
Ben Skeggs [Wed, 18 Jun 2014 05:46:22 +0000 (15:46 +1000)]
drm/gf117/i2c: no aux channels on this chipset

Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agoblk-mq: bitmap tag: fix races in bt_get() function
Alexander Gordeev [Tue, 17 Jun 2014 20:37:23 +0000 (22:37 +0200)]
blk-mq: bitmap tag: fix races in bt_get() function

This update fixes few issues in bt_get() function:

- list_empty(&wait.task_list) check is not protected;

- was_empty check is always true which results in *every* thread
  entering the loop resets bt_wait_state::wait_cnt counter rather
  than every bt->wake_cnt'th thread;

- 'bt_wait_state::wait_cnt' counter update is redundant, since
  it also gets reset in bt_clear_tag() function;

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
10 years agoblk-mq: bitmap tag: fix race on blk_mq_bitmap_tags::wake_cnt
Alexander Gordeev [Thu, 12 Jun 2014 15:05:37 +0000 (17:05 +0200)]
blk-mq: bitmap tag: fix race on blk_mq_bitmap_tags::wake_cnt

This piece of code in bt_clear_tag() function is racy:

bs = bt_wake_ptr(bt);
if (bs && atomic_dec_and_test(&bs->wait_cnt)) {
atomic_set(&bs->wait_cnt, bt->wake_cnt);
  wake_up(&bs->wait);
}

Since nothing prevents bt_wake_ptr() from returning the very
same 'bs' address on multiple CPUs, the following scenario is
possible:

    CPU1                                CPU2
    ----                                ----

0.  bs = bt_wake_ptr(bt);               bs = bt_wake_ptr(bt);
1.  atomic_dec_and_test(&bs->wait_cnt)
2.                                      atomic_dec_and_test(&bs->wait_cnt)
3.  atomic_set(&bs->wait_cnt, bt->wake_cnt);

If the decrement in [1] yields zero then for some amount of time
the decrement in [2] results in a negative/overflow value, which
is not expected. The follow-up assignment in [3] overwrites the
invalid value with the batch value (and likely prevents the issue
from being severe) which is still incorrect and should be a lesser.

Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
10 years agoblk-mq: bitmap tag: fix races on shared ::wake_index fields
Alexander Gordeev [Wed, 18 Jun 2014 05:12:35 +0000 (22:12 -0700)]
blk-mq: bitmap tag: fix races on shared ::wake_index fields

Fix racy updates of shared blk_mq_bitmap_tags::wake_index
and blk_mq_hw_ctx::wake_index fields.

Cc: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
10 years agoblock: blk_max_size_offset() should check ->max_sectors
Jens Axboe [Wed, 18 Jun 2014 05:09:29 +0000 (22:09 -0700)]
block: blk_max_size_offset() should check ->max_sectors

Commit 762380ad9322 inadvertently changed a check for max_sectors
to max_hw_sectors. Revert that part, so we still compare against
max_sectors.

Signed-off-by: Jens Axboe <axboe@fb.com>
10 years agoMerge tag 'dt-fixes-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh...
Linus Torvalds [Wed, 18 Jun 2014 00:25:09 +0000 (14:25 -1000)]
Merge tag 'dt-fixes-for-3.16' of git://git./linux/kernel/git/robh/linux

Pull device tree fixes from Rob Herring:
 - fix microblaze compiling due to conflicting merge window changes
 - a fix in of_attach_node due to of_find_node_by_path changes
 - prevent format strings in DT kobject names

* tag 'dt-fixes-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  OF: fix of_find_node_by_path() assumption that of_allnodes is root
  of: avoid format string parsing in kobject names
  of/platform: Fix microblaze build failure

10 years agoMerge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Wed, 18 Jun 2014 00:23:14 +0000 (14:23 -1000)]
Merge tag 'random_for_linus' of git://git./linux/kernel/git/tytso/random

Pull randomness bugfix from Ted Ts'o:
 "random: fix entropy accounting bug introduced in v3.15"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: fix nasty entropy accounting bug

10 years agoMerge tag 'regulator-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 18 Jun 2014 00:21:07 +0000 (14:21 -1000)]
Merge tag 'regulator-v3.16-rc1' of git://git./linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A few small fixes:

   - Fixes for bugs in Palmas and as3722 exposed by recent changes in
     the core - the drivers weren't allowing the current configuration
     to be read sometimes.
   - Provide a stub for regulator_can_change_voltage() for !REGULATOR.
   - Make sure ltc3589 only looks at its child nodes in the device tree
     rather than searching the whole tree"

* tag 'regulator-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: ltc3589: Use of_get_child_by_name
  regulator: palmas: Fix SMPS list for 0V
  regulator: add regulator_can_change_voltage stub
  regulator: as3722: Make 0 a valid selector

10 years agoMerge tag 'spi-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Wed, 18 Jun 2014 00:20:17 +0000 (14:20 -1000)]
Merge tag 'spi-v3.16-rc1' of git://git./linux/kernel/git/broonie/spi

Pull spi fix from Mark Brown:
 "A single bugfix from the merge window, fixing an issue with DMA at
  slow speeds on Intel hardware"

* tag 'spi-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi/pxa2xx: change default supported DMA burst size to 1

10 years agointel_pstate: Correct rounding in busy calculation
Doug Smythies [Tue, 17 Jun 2014 20:36:10 +0000 (13:36 -0700)]
intel_pstate: Correct rounding in busy calculation

There was a mistake in the actual rounding portion this previous patch:
f0fe3cd7e12d (intel_pstate: Correct rounding in busy calculation) such that
the rounding was asymetric and incorrect.

Severity: Not very serious, but can increase target pstate by one extra value.
For real world work flows the issue should self correct (but I have no proof).
It is the equivalent of different PID gains for positive and negative numbers.

Examples:
 -3.000000 used to round to -4, rounds to -3 with this patch.
 -3.503906 used to round to -5, rounds to -4 with this patch.

Fixes: f0fe3cd7e12d (intel_pstate: Correct rounding in busy calculation)
Signed-off-by: Doug Smythies <dsmythies@telus.net>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoARM: use menuconfig for sub-arch menus
Rob Herring [Tue, 10 Jun 2014 14:06:10 +0000 (09:06 -0500)]
ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by making platform options a menuconfig entry containing any platform
specific config items.

[arnd: change OMAP part according to suggestion from
 Tony Lindgren <tony@atomide.com>]

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: multi_v7_defconfig: re-enable SDHCI drivers
Stephen Warren [Mon, 16 Jun 2014 16:50:42 +0000 (10:50 -0600)]
ARM: multi_v7_defconfig: re-enable SDHCI drivers

Following 5d01b7684b7e "mmc: simplify SDHCI Kconfig dependencies",
SDHCI drivers that use MMC_SDHCI_PLTFM no longer select it, but
instead depend on it. This means that multi_v7_defconfig no longer
selects it, and hence many SDHCI drivers are no longer enabled.
Explicitly enable MMC_SDHCI_PLTFM to solve this.

Fixes: 5d01b7684b7e ("mmc: simplify SDHCI Kconfig dependencies")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: EXYNOS: Fix compilation warning
Sachin Kamat [Mon, 5 May 2014 09:26:48 +0000 (14:56 +0530)]
ARM: EXYNOS: Fix compilation warning

of_get_flat_dt_prop return type is now const.
Fixes the following compilation warning introduced by commit 9d0c4dfedd96
("of/fdt: update of_get_flat_dt_prop in prep for libfdt")

arch/arm/mach-exynos/exynos.c:259:6: warning:
assignment discards ‘const’ qualifier from pointer target type [enabled by default]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: exynos: move sysram info to exynos.c
Olof Johansson [Tue, 3 Jun 2014 04:47:46 +0000 (21:47 -0700)]
ARM: exynos: move sysram info to exynos.c

This solves a problem with building with CONFIG_SMP=n due to missing
sysram_base_addr (or sysram_ns_base_addr) variables.

The new setup method is more awkward than I'd like for it to be, but
it can't be done in init_early() since ioremap is not yet available,
but it needs to happen before SMP.

Reported-by: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: dts: Specify the NAND ECC scheme explicitly on Armada 385 DB board
Ezequiel Garcia [Sat, 24 May 2014 14:17:10 +0000 (11:17 -0300)]
ARM: dts: Specify the NAND ECC scheme explicitly on Armada 385 DB board

The factory bootloader on A385-DB boards expect the ECC strength to be
4 bits over 512 bytes. Hence, we need to specify this in the devicetree,
to prevent the kernel from assuming any different ECC scheme.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Link: https://lkml.kernel.org/r/1400941030-2123-3-git-send-email-ezequiel.garcia@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
10 years agoARM: dts: Specify the NAND ECC scheme explicitly on Armada 375 DB board
Ezequiel Garcia [Sat, 24 May 2014 14:17:09 +0000 (11:17 -0300)]
ARM: dts: Specify the NAND ECC scheme explicitly on Armada 375 DB board

The factory bootloader on A375-DB boards expect the ECC strength to be
4 bits over 512 bytes. Hence, we need to specify this in the devicetree,
to prevent the kernel from assuming any different ECC scheme.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Link: https://lkml.kernel.org/r/1400941030-2123-2-git-send-email-ezequiel.garcia@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
10 years agoARM: exynos: cleanup kconfig option display
Rob Herring [Tue, 10 Jun 2014 14:06:09 +0000 (09:06 -0500)]
ARM: exynos: cleanup kconfig option display

The addition of Exynos to multi-platform configs creates a mess of config
options with options appearing before the Exynos config option. This is
due to arch/arm/plat-samsung/Kconfig being included out of order with the
other Samsung platform kconfig files. Reorder the kconfig files and move
all the options into a sub-menu. Some of the options are dead, so remove
those as well.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agomisc: vexpress: fix error handling vexpress_syscfg_regmap_init()
Dan Carpenter [Wed, 11 Jun 2014 10:17:41 +0000 (13:17 +0300)]
misc: vexpress: fix error handling vexpress_syscfg_regmap_init()

This function should be returning an ERR_PTR() on failure instead of
NULL.  Also there is a use after free bug if regmap_init() fails because
we free "func" and then dereference doing the return.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: Remove ARCH_HAS_CPUFREQ config option
Stephen Boyd [Tue, 3 Jun 2014 18:24:23 +0000 (11:24 -0700)]
ARM: Remove ARCH_HAS_CPUFREQ config option

This config exists entirely to hide the cpufreq menu from the
kernel configuration unless a platform has selected it. Nothing
is actually built if this config is 'Y' and it just leads to more
patches that add a select under a platform Kconfig so that some
other CPUfreq option can be chosen. Let's remove the option so
that we can always enable CPUfreq drivers on ARM platforms.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: integrator: fix section mismatch problem
Linus Walleij [Wed, 4 Jun 2014 12:47:28 +0000 (14:47 +0200)]
ARM: integrator: fix section mismatch problem

This addresses a section mismatch problem in the IM-PD1
driver in the Integrator/AP.

The IM-PD1 contains a VIC interrupt controller and therefore
the driver calls vic_init_cascaded() which is marked __init as
irqchips are simply not hot-pluggable and specifically the VIC
is assumed to initiate only on boot.

However the module driver model of the Integrator LM bus
assumes that logic tile drivers can be probed at runtime. This
is not really the case for IM-PD1: these tiles are detected at
boot and they cannot be plugged into a running system. Before
this patch it is of course possible to modprobe them later.

By first forcing the IM-PD1 to bool we make sure this driver
gets compiled into the kernel, and we know it will be probed
only at boot time when the tiles are detected, so we can tag
its probe function __init_refok as we know it won't be called
after boot now, and the section mismatch problem goes away.

As a side effect, sysfs binding from userspace becomes
impossible, so we tag the driver to suppress the bind/unbind
sysfs attributes.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: mvebu: DT: fix OpenBlocks AX3-4 RAM size
Jason Cooper [Wed, 4 Jun 2014 13:41:20 +0000 (13:41 +0000)]
ARM: mvebu: DT: fix OpenBlocks AX3-4 RAM size

The OpenBlocks AX3-4 has a non-DT bootloader.  It also comes with 1GB of
soldered on RAM, and a DIMM slot for expansion.

Unfortunately, atags_to_fdt() doesn't work in big-endian mode, so we see
the following failure when attempting to boot a big-endian kernel:

  686 slab pages
  17 pages shared
  0 pages swap cached
  [ pid ]   uid  tgid total_vm      rss nr_ptes swapents oom_score_adj name
  Kernel panic - not syncing: Out of memory and no killable processes...

  CPU: 1 PID: 351 Comm: kworker/u4:0 Not tainted 3.15.0-rc8-next-20140603 #1
  [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14)
  [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94)
  [<c0802500>] (dump_stack) from [<c0800068>] (panic+0x90/0x21c)
  [<c0800068>] (panic) from [<c02b5704>] (out_of_memory+0x320/0x340)
  [<c02b5704>] (out_of_memory) from [<c02b93a0>] (__alloc_pages_nodemask+0x874/0x930)
  [<c02b93a0>] (__alloc_pages_nodemask) from [<c02d446c>] (handle_mm_fault+0x744/0x96c)
  [<c02d446c>] (handle_mm_fault) from [<c02cf250>] (__get_user_pages+0xd0/0x4c0)
  [<c02cf250>] (__get_user_pages) from [<c02f3598>] (get_arg_page+0x54/0xbc)
  [<c02f3598>] (get_arg_page) from [<c02f3878>] (copy_strings+0x278/0x29c)
  [<c02f3878>] (copy_strings) from [<c02f38bc>] (copy_strings_kernel+0x20/0x28)
  [<c02f38bc>] (copy_strings_kernel) from [<c02f4f1c>] (do_execve+0x3a8/0x4c8)
  [<c02f4f1c>] (do_execve) from [<c025ac10>] (____call_usermodehelper+0x15c/0x194)
  [<c025ac10>] (____call_usermodehelper) from [<c020e9b8>] (ret_from_fork+0x14/0x3c)
  CPU0: stopping
  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.15.0-rc8-next-20140603 #1
  [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14)
  [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94)
  [<c0802500>] (dump_stack) from [<c021429c>] (handle_IPI+0x138/0x174)
  [<c021429c>] (handle_IPI) from [<c02087f0>] (armada_370_xp_handle_irq+0xb0/0xcc)
  [<c02087f0>] (armada_370_xp_handle_irq) from [<c0212100>] (__irq_svc+0x40/0x50)
  Exception stack(0xc0b6bf68 to 0xc0b6bfb0)
  bf60:                   e9fad598 00000000 00f509a3 00000000 c0b6a000 c0b724c4
  bf80: c0b72458 c0b6a000 00000000 00000000 c0b66da0 c0b6a000 00000000 c0b6bfb0
  bfa0: c027bb94 c027bb24 60000313 ffffffff
  [<c0212100>] (__irq_svc) from [<c027bb24>] (cpu_startup_entry+0x54/0x214)
  [<c027bb24>] (cpu_startup_entry) from [<c0ac5b30>] (start_kernel+0x318/0x37c)
  [<c0ac5b30>] (start_kernel) from [<00208078>] (0x208078)
  ---[ end Kernel panic - not syncing: Out of memory and no killable processes...

A similar failure will also occur if ARM_ATAG_DTB_COMPAT isn't selected.

Fix this by setting a sane default (1 GB) in the dts file.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Tested-by: Kevin Hilman <khilman@linaro.org>
Cc: <stable@vger.kernel.org> #v3.13+
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: samsung: make SAMSUNG_DMADEV optional
Arnd Bergmann [Fri, 13 Jun 2014 10:04:39 +0000 (12:04 +0200)]
ARM: samsung: make SAMSUNG_DMADEV optional

The only remaining driver using the samsung dmadev code is the broken
samsung-ac97 sound driver. However, as found by Russell's autobuilder,
the elaborate dependency chains around it cause problems with
circular dependencies.

This is an attempt to simplify those dependencies by making the
SAMSUNG_DMADEV option user-selectable. I also try to keep the
default settings for all related options unchanged, so we don't
introduce any regressions against earlier testing on linux-next.

In particular, all s3c64xx and s5p* platforms keep selecting the
pl330 and pl08x drivers they require, but the select statement
is now moved towards the main platform option, and it remains
optional by unselecting CONFIG_DMADEVICES.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
10 years agoremoteproc: da8xx: don't select CMA on no-MMU
Arnd Bergmann [Fri, 11 Apr 2014 16:14:26 +0000 (18:14 +0200)]
remoteproc: da8xx: don't select CMA on no-MMU

We can only use CMA on systems that have an MMU, because of
the requirement to use memory migration. NOMMU systems are
rather constrained to start with, but it seems reasonable
to assume that DMA allocations can still succeed in the
constrained case for remoteproc on NOMMU, so this patch
changes the da8xx implementation to not rely on CMA when
the MMU is disabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Robert Tivy <rtivy@ti.com>
10 years agobus/arm-cci: add dependency on OF && CPU_V7
Arnd Bergmann [Sat, 15 Mar 2014 19:32:00 +0000 (20:32 +0100)]
bus/arm-cci: add dependency on OF && CPU_V7

The arm-cci code uses device tree helpers for initialization
that don't work on kernels built without CONFIG_OF. Further,
it contains an inline assembly in cci_enable_port_for_self()
that uses ARMv7 instructions and fails to build when targetting
other ARM instruction set versions.

This works around both issues by limiting the scope of the
Kconfig symbol to platforms that can actually build this driver
cleanly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
10 years agoARM: keystone requires ARM_PATCH_PHYS_VIRT
Arnd Bergmann [Mon, 12 May 2014 12:42:34 +0000 (14:42 +0200)]
ARM: keystone requires ARM_PATCH_PHYS_VIRT

The dynamic relocation that the keystone platform performs
only works if we can pick the phys offset at boot time. It's
possible that there is another solution for this, but this
is the easiest workaround. Kernels with ARM_PATCH_PHYS_VIRT
are not portable across platforms, and I see no reason why
anyone would run a kernel without ARM_PATCH_PHYS_VIRT on
keystone.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
10 years agoARM: omap2: fix am43xx dependency on l2x0 cache
Arnd Bergmann [Fri, 6 Jun 2014 07:38:35 +0000 (09:38 +0200)]
ARM: omap2: fix am43xx dependency on l2x0 cache

Commit d941f86fad41b ("ARM: l2c: AM43x: add L2 cache support") enabled
the L2 cache support for the am43xx SoC, but caused a build regression
when the driver for that cache controller is disabled:

arch/arm/mach-omap2/built-in.o: In function `am43xx_init_early':
:(.init.text+0xb20): undefined reference to `omap_l2_cache_init'

This did not happen for OMAP4, which has the same call, but enables
the l2x0 driver unconditionally. We could do the same thing for
am43xx, but it seems better to allow turning it off and make the
code work in either case.

This adds an inline wrapper for omap_l2_cache_init for the disabled
case, and removes the 'select' from OMAP4 so it becomes a user
visible option.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org
10 years agoACPI: use kstrto*() instead of simple_strto*()
Christoph Jaeger [Fri, 13 Jun 2014 19:49:58 +0000 (21:49 +0200)]
ACPI: use kstrto*() instead of simple_strto*()

simple_strto*() are obsolete; use kstrto*() instead. Add proper error
checking.

Signed-off-by: Christoph Jaeger <christophjaeger@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoACPI / processor replace __attribute__((packed)) by __packed
Fabian Frederick [Sun, 1 Jun 2014 17:16:17 +0000 (19:16 +0200)]
ACPI / processor replace __attribute__((packed)) by __packed

This patch fixes checkpatch warnings:

"WARNING: __packed is preferred over __attribute__((packed))"

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoACPI / battery: add quirk for Acer Aspire V5-573G
Alexander Mezin [Tue, 3 Jun 2014 19:01:23 +0000 (02:01 +0700)]
ACPI / battery: add quirk for Acer Aspire V5-573G

On Acer Aspire V5-573G battery notifications are sometimes
triggered too early. For example, when AC is unplugged and
notification is triggered, battery state is still reported as
"Full", and changes to "Discharging" only after short delay,
without any notification.

This patch solves the problem by adding 1 second sleep.
Similar quirk is already implemented in AC driver for other laptop.

Signed-off-by: Alexander Mezin <mezin.alexander@gmail.com>
Acked-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoACPI / battery: use callback for setting up quirks
Alexander Mezin [Tue, 3 Jun 2014 19:01:22 +0000 (02:01 +0700)]
ACPI / battery: use callback for setting up quirks

Use callback for setting up quirk instead of checking return code
of dmi_check_system(). This change will allow using bat_dmi_table
for other quirks.

Signed-off-by: Alexander Mezin <mezin.alexander@gmail.com>
Acked-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoACPI / LPSS: Take I2C host controllers out of reset
Mika Westerberg [Tue, 17 Jun 2014 11:33:39 +0000 (14:33 +0300)]
ACPI / LPSS: Take I2C host controllers out of reset

On Intel Baytrail, some I2C host controllers are held in reset when the OS
gets control. This causes the driver to fail to detect the hardware
properly.

Fix this so that we make sure that the I2C host controller is not in reset
when the driver gets probe'd.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoMerge branch 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Tue, 17 Jun 2014 04:59:43 +0000 (14:59 +1000)]
Merge branch 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-next

two fixes for the deep color support in radeon.

* 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: Bypass hw lut's for > 8 bpc framebuffer scanout.
  drm/radeon: use pixel formats instead of depth/bpp

10 years agoMerge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Tue, 17 Jun 2014 04:57:08 +0000 (14:57 +1000)]
Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

This is bigger because it regenerates the internal firmwares after a fix.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/doc: update the thermal documentation
  drm/nouveau/pwr: fix typo in fifo wrap handling
  drm/nv50/disp: fix a potential oops in supervisor handling
  drm/nouveau/disp/dp: don't touch link config after success
  drm/nouveau/kms: reference vblank for crtc during pageflip.
  drm/gk104/fb/ram: fixups from an earlier search+replace
  drm/nv50/gr: remove an unneeded write while initialising PGRAPH
  drm/nv50/gr: fix overlap while zeroing zcull regions
  drm/gf100-/gr: report class data to host on fwmthd failure
  drm/gk104/ibus: increase various random timeouts
  drm/gk104/clk: only touch divider for mode we'll be using

10 years agodrm/nouveau/doc: update the thermal documentation
Martin Peres [Mon, 9 Jun 2014 18:38:36 +0000 (20:38 +0200)]
drm/nouveau/doc: update the thermal documentation

Changes:
 - Change the maintainer's address (the labri address will expire soon);
 - Drop the note about not all families supporting all fan modes;
 - Add a note about the reported RPM not being accurate when driven outside
   the vbios-defined PWM range.

Signed-off-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau/pwr: fix typo in fifo wrap handling
Ben Skeggs [Tue, 17 Jun 2014 04:10:47 +0000 (14:10 +1000)]
drm/nouveau/pwr: fix typo in fifo wrap handling

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nv50/disp: fix a potential oops in supervisor handling
Ben Skeggs [Mon, 16 Jun 2014 23:39:18 +0000 (09:39 +1000)]
drm/nv50/disp: fix a potential oops in supervisor handling

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau/disp/dp: don't touch link config after success
Ben Skeggs [Mon, 16 Jun 2014 05:45:01 +0000 (15:45 +1000)]
drm/nouveau/disp/dp: don't touch link config after success

I don't know of anything this fixes, but it seems wrong anyway.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau/kms: reference vblank for crtc during pageflip.
Mario Kleiner [Wed, 11 Jun 2014 07:51:23 +0000 (09:51 +0200)]
drm/nouveau/kms: reference vblank for crtc during pageflip.

Need to drm_vblank_get/put() the crtc involved in a
pending pageflip, or we might not get vblank irqs and
updates of vblank counts and timestamps for pageflip
events and flip completion.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
10 years agodrm/gk104/fb/ram: fixups from an earlier search+replace
Ben Skeggs [Fri, 13 Jun 2014 08:28:47 +0000 (18:28 +1000)]
drm/gk104/fb/ram: fixups from an earlier search+replace

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nv50/gr: remove an unneeded write while initialising PGRAPH
Pierre Moreau [Fri, 13 Jun 2014 00:34:30 +0000 (02:34 +0200)]
drm/nv50/gr: remove an unneeded write while initialising PGRAPH

The blob does not seem to write at that place for my NVAC, though it
does for my NV96, agreeing with what is done in the if/else structure
below. I guess someone forgot to remove the line when the if/else was
put in place.

Signed-off-by: Pierre Moreau <pierre.morrow@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nv50/gr: fix overlap while zeroing zcull regions
Pierre Moreau [Fri, 13 Jun 2014 00:34:29 +0000 (02:34 +0200)]
drm/nv50/gr: fix overlap while zeroing zcull regions

The specified stride was not correct, resulting in erases overlapping
and part of the zcull regions being not erased at all.

Signed-off-by: Pierre Moreau <pierre.morrow@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/gf100-/gr: report class data to host on fwmthd failure
Ben Skeggs [Fri, 13 Jun 2014 01:26:45 +0000 (11:26 +1000)]
drm/gf100-/gr: report class data to host on fwmthd failure

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/gk104/ibus: increase various random timeouts
Ben Skeggs [Thu, 12 Jun 2014 03:32:59 +0000 (13:32 +1000)]
drm/gk104/ibus: increase various random timeouts

Fixes (at least) PTHERM accesses timing out at higher clock speeds.

Values and registers taken from what the binary driver does.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/gk104/clk: only touch divider for mode we'll be using
Ben Skeggs [Thu, 12 Jun 2014 01:02:45 +0000 (11:02 +1000)]
drm/gk104/clk: only touch divider for mode we'll be using

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agoepoll: fix use-after-free in eventpoll_release_file
Konstantin Khlebnikov [Tue, 17 Jun 2014 02:58:05 +0000 (06:58 +0400)]
epoll: fix use-after-free in eventpoll_release_file

This fixes use-after-free of epi->fllink.next inside list loop macro.
This loop actually releases elements in the body.  The list is
rcu-protected but here we cannot hold rcu_read_lock because we need to
lock mutex inside.

The obvious solution is to use list_for_each_entry_safe().  RCU-ness
isn't essential because nobody can change this list under us, it's final
fput for this file.

The bug was introduced by ae10b2b4eb01 ("epoll: optimize EPOLL_CTL_DEL
using rcu")

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Reported-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Stable <stable@vger.kernel.org> # 3.13+
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agox86, kaslr: boot-time selectable with hibernation
Kees Cook [Fri, 13 Jun 2014 20:30:36 +0000 (13:30 -0700)]
x86, kaslr: boot-time selectable with hibernation

Changes kASLR from being compile-time selectable (blocked by
CONFIG_HIBERNATION), to being boot-time selectable (with hibernation
available by default) via the "kaslr" kernel command line.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoPM / hibernate: introduce "nohibernate" boot parameter
Kees Cook [Fri, 13 Jun 2014 20:30:35 +0000 (13:30 -0700)]
PM / hibernate: introduce "nohibernate" boot parameter

To support using kernel features that are not compatible with hibernation,
this creates the "nohibernate" kernel boot parameter to disable both
hibernation and resume. This allows hibernation support to be a boot-time
choice instead of only a compile-time choice.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agocpufreq: cpufreq-cpu0: fix CPU_THERMAL dependency
Arnd Bergmann [Fri, 13 Jun 2014 08:40:32 +0000 (10:40 +0200)]
cpufreq: cpufreq-cpu0: fix CPU_THERMAL dependency

5fbfbcd3e842d ("cpufreq: cpufreq-cpu0: remove dependency on THERMAL and
REGULATOR") was a little too quick in completely removing the dependency
on the THERMAL driver.

The problem is that while there are inline wrappers to turn the thermal
API calls into empty functions, those do not help if the cpu-thermal
driver is a loadable module and cpufreq-cpu0 is builtin.

Since CONFIG_CPU_THERMAL is a bool option that decides whether the cpu
code is built into the thermal module or not, we have to use a dependency
on the thermal driver itself. However, if CPU_THERMAL is disabled, we
don't need the dependency, hence the strange '!CPU_THERMAL || THERMAL'
construct.

Fixes: 5fbfbcd3e842d ("cpufreq: cpufreq-cpu0: remove dependency on THERMAL and REGULATOR")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years agoACPI / ia64 / sba_iommu: Restore the working initialization ordering
Rafael J. Wysocki [Thu, 12 Jun 2014 23:17:03 +0000 (01:17 +0200)]
ACPI / ia64 / sba_iommu: Restore the working initialization ordering

Commit 66345d5f79fc (ACPI / ia64 / sba_iommu: Use ACPI scan handler
for device discovery) changed the ordering of SBA (System Bus Adapter)
IOMMU initialization with respect to the PCI host bridge initialization
which broke things inadvertently, because the SBA IOMMU initialization
code has to run after the PCI host bridge has been initialized.

Fix that by reworking the SBA IOMMU ACPI scan handler so that it
claims the discovered matching ACPI device objects without attempting
to initialize anything and move the entire SBA IOMMU initialization
to sba_init() that runs after the PCI bus has been enumerated.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=76691
Fixes: 66345d5f79fc (ACPI / ia64 / sba_iommu: Use ACPI scan handler for device discovery)
Reported-and-tested-by: Émeric Maschino <emeric.maschino@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: 3.11+ <stable@vger.kernel.org> # 3.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>