Use kvfree() instead of open-coding it.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for v4.2.

  I've one other new driver from freescale on my radar, it's been posted
  and reviewed, I'd just like to get someone to give it a last look, so
  maybe I'll send it or maybe I'll leave it.

  There is no major nouveau changes in here, Ben was working on
  something big, and we agreed it was a bit late, there wasn't anything
  else he considered urgent to merge.

  There might be another msm pull for some bits that are waiting on
  arm-soc, I'll see how we time it.

  This touches some "of" stuff, acks are in place except for the fixes
  to the build in various configs,t hat I just applied.

  Summary:

  New drivers:
      - virtio-gpu:
                KMS only pieces of driver for virtio-gpu in qemu.
                This is just the first part of this driver, enough to run
                unaccelerated userspace on. As qemu merges more we'll start
                adding the 3D features for the virgl 3d work.
      - amdgpu:
                a new driver from AMD to driver their newer GPUs. (VI+)
                It contains a new cleaner userspace API, and is a clean
                break from radeon moving forward, that AMD are going to
                concentrate on. It also contains a set of register headers
                auto generated from AMD internal database.

  core:
      - atomic modesetting API completed, enabled by default now.
      - Add support for mode_id blob to atomic ioctl to complete interface.
      - bunch of Displayport MST fixes
      - lots of misc fixes.

  panel:
      - new simple panels
      - fix some long-standing build issues with bridge drivers

  radeon:
      - VCE1 support
      - add a GPU reset counter for userspace
      - lots of fixes.

  amdkfd:
      - H/W debugger support module
      - static user-mode queues
      - support killing all the waves when a process terminates
      - use standard DECLARE_BITMAP

  i915:
      - Add Broxton support
      - S3, rotation support for Skylake
      - RPS booting tuning
      - CPT modeset sequence fixes
      - ns2501 dither support
      - enable cmd parser on haswell
      - cdclk handling fixes
      - gen8 dynamic pte allocation
      - lots of atomic conversion work

  exynos:
      - Add atomic modesetting support
      - Add iommu support
      - Consolidate drm driver initialization
      - and MIC, DECON and MIPI-DSI support for exynos5433

  omapdrm:
      - atomic modesetting support (fixes lots of things in rewrite)

  tegra:
      - DP aux transaction fixes
      - iommu support fix

  msm:
      - adreno a306 support
      - various dsi bits
      - various 64-bit fixes
      - NV12MT support

  rcar-du:
      - atomic and misc fixes

  sti:
      - fix HDMI timing complaince

  tilcdc:
      - use drm component API to access tda998x driver
      - fix module unloading

  qxl:
      - stability fixes"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (872 commits)
  drm/nouveau: Pause between setting gpu to D3hot and cutting the power
  drm/dp/mst: close deadlock in connector destruction.
  drm: Always enable atomic API
  drm/vgem: Set unique to "vgem"
  of: fix a build error to of_graph_get_endpoint_by_regs function
  drm/dp/mst: take lock around looking up the branch device on hpd irq
  drm/dp/mst: make sure mst_primary mstb is valid in work function
  of: add EXPORT_SYMBOL for of_graph_get_endpoint_by_regs
  ARM: dts: rename the clock of MIPI DSI 'pll_clk' to 'sclk_mipi'
  drm/atomic: Don't set crtc_state->enable manually
  drm/exynos: dsi: do not set TE GPIO direction by input
  drm/exynos: dsi: add support for MIC driver as a bridge
  drm/exynos: dsi: add support for Exynos5433
  drm/exynos: dsi: make use of array for clock access
  drm/exynos: dsi: make use of driver data for static values
  drm/exynos: dsi: add macros for register access
  drm/exynos: dsi: rename pll_clk to sclk_clk
  drm/exynos: mic: add MIC driver
  of: add helper for getting endpoint node of specific identifiers
  drm/exynos: add Exynos5433 decon driver
  ...

I've only seen this once, and I failed to capture the
lockdep backtrace, but I did some investigations.

If we are calling into the MST layer from EDID probing,
we have the mode_config mutex held, if during that EDID
probing, the MST hub goes away, then we can get a deadlock
where the connector destruction function in the driver
tries to retake the mode config mutex.

This offloads connector destruction to a workqueue,
and avoid the subsequenct lock ordering issue.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

One more drm-misc pull for 4.2. The important one is the fix from Laurent
for Daniel Stone's mode_blob work.

* tag 'topic/drm-misc-2015-06-22' of git://anongit.freedesktop.org/drm-intel:
  drm/atomic: Don't set crtc_state->enable manually
  drm: prime: Document gem_prime_mmap
  drm: Avoid the double clflush on the last cache line in drm_clflush_virt_range()
  drm/atomic: Extract needs_modeset function
  drm/cma: Fix 64-bit size_t build warnings
  Documentation/drm: Update rotation property

We use the same check already in the atomic core, so might as well
make this official. And it's also reused in e.g. i915.

Motivated by Maarten's idea to extract a connector_changed state out
of mode_changed.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-By: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

drm/panel: Changes for v4.2-rc1

This contains fixes for the long-standing build issues that some of the
bridge drivers were exposing. Other than that it's mostly cleanup and a
couple of new simple panels that are supported.

* tag 'drm/panel/for-4.2-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/panel: simple: Add bus format for HannStar HSD100PXN1
  drm/panel: simple: Add display timing for HannStar HSD100PXN1
  drm/panel: ld9040: Remove useless padding
  drm/panel: Constify OF match tables
  drm/bridge: Remove stale ptn3460.h include
  drm/bridge: ps8622: Include linux/gpio/consumer.h
  drm/bridge: ptn3460: Include linux/gpio/consumer.h
  drm/bridge: dw-hdmi: Return number of EDID modes
  drm/panel: simple: Add support for LG LB070WV8 800x480 7" panel
  drm/bridge: ptn3460: Pass flags to devm_gpiod_get()
  drm/bridge: ps8622: Pass flags to devm_gpiod_get()
  drm/bridge: ptn3460: Fix I2C ID table to match the reported modalias
  drm/bridge: dw-hdmi: Staticize dw_hdmi_bridge_funcs

ASoC: Updates for v4.2

The big thing this release has been Liam's addition of topology support
to the core.  We've also seen quite a bit of driver work and the
continuation of Lars' refactoring for component support.

 - Support for loading ASoC topology maps from firmware, intended to be
   used to allow self-describing DSP firmware images to be built which
   can map controls added by the DSP to userspace without the kernel
   needing to know about individual DSP firmwares.
 - Lots of refactoring to avoid direct access to snd_soc_codec where
   it's not needed supporting future refactoring.
 - Big refactoring and cleanup serieses for the Wolfson ADSP and TI
   TAS2552 drivers.
 - Support for TI TAS571x power amplifiers.
 - Support for Qualcomm APQ8016 and ZTE ZX296702 SoCs.
 - Support for x86 systems with RT5650 and Qualcomm Storm.

This header file declares prototypes of functions that are no longer
used. Remove this file and all references to it.

Signed-off-by: Thierry Reding <treding@nvidia.com>

Yay, thanks to Gerd for pull this together.

* 'virtio-gpu-drm-next' of git://git.kraxel.org/linux:
  Add MAINTAINERS entry for virtio-gpu.
  Add virtio gpu driver.
  drm_vblank_get: don't WARN_ON in case vblanks are not initialized
  break kconfig dependency loop

One more round of drm-misc, again mostly atomic. Big thing is the
userspace blob code from Daniel Stone, with support for the mode_id blob
now added to the atomic ioctl. Finally we can do atomic modesets!

Note that the atomic ioctl is still behind the module knob since the
weston patches aren't quite ready yet imo - they lack TEST_ONLY support,
which is a fairly crucial bit of the atomic api. But besides that I think
it's all good to go. That's also why we didn't bother to hide the new blob
ioctls behind the knob, that part won't need to change. And if weston
patches get in shape in time we could throw the "atomic by default patch"
on top for 4.2.

* tag 'topic/drm-misc-2015-05-27' of git://anongit.freedesktop.org/drm-intel:
  drm: Fix off-by-one in vblank hardware counter wraparound handling
  drm/atomic: fix out of bounds read in for_each_*_in_state helpers
  drm/atomic: Add MODE_ID property
  drm/atomic: Add current-mode blob to CRTC state
  drm: Add drm_atomic_set_mode_for_crtc
  drm: check for garbage in unused addfb2 fields
  drm: Retain reference to blob properties in lookup
  drm/mode: Add user blob-creation ioctl
  drm: Return error value from blob creation
  drm: Allow creating blob properties without copy
  drm/mode: Unstatic kernel-userspace mode conversion
  drm/mode: Validate modes inside drm_crtc_convert_umode
  drm/crtc_helper: Replace open-coded CRTC state helpers
  drm: kerneldoc fixes for blob properties
  drm/DocBook: Add more drm_bridge documentation
  drm: bridge: Allow daisy chaining of bridges
  drm/atomic: add all affected planes in drm_atomic_helper_check_modeset
  drm/atomic: add drm_atomic_add_affected_planes
  drm/atomic: add commit_planes_on_crtc helper