Pull drm fixes from Dave Airlie:
"Nothing too major, radeon still has some dpm changes for off by
default.
Radeon, intel, msm:
- radeon: a few more dpm fixes (still off by default), uvd fixes
- i915: runtime warn backtrace and regression fix
- msm: iommu changes fallout"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (27 commits)
drm/msm: use drm_gem_dumb_destroy helper
drm/msm: deal with mach/iommu.h removal
drm/msm: Remove iommu include from mdp4_kms.c
drm/msm: Odd PTR_ERR usage
drm/i915: Fix up usage of SHRINK_STOP
drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
drm/i915/tv: clear adjusted_mode.flags
drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
drm/radeon/cik: fix overflow in vram fetch
drm/radeon: add missing hdmi callbacks for rv6xx
drm/i915: Use a temporary va_list for two-pass string handling
drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
drm/radeon: disable tests/benchmarks if accel is disabled
drm/radeon: don't set default clocks for SI when DPM is disabled
drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
drm/radeon/dpm: fetch the max clk from voltage dep tables helper
...
A small fix + deal with fallout of iommu changes + use new
drm_gem_dumb_destroy helper.
* 'msm-fixes-3.12-rc2' of git://people.freedesktop.org/~robclark/linux:
drm/msm: use drm_gem_dumb_destroy helper
drm/msm: deal with mach/iommu.h removal
drm/msm: Remove iommu include from mdp4_kms.c
drm/msm: Odd PTR_ERR usage
We still need an API exported by msm iommu driver (but not visible in
any public header anymore). For now, just declare the prototype
ourselves, but when msm iommu driver provides a better option, use that
instead.
Signed-off-by: Rob Clark <robdclark@gmail.com>
The include file has been removed and the file does not
need it anyway, so remove it. Fixes a compile error.
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The variable priv->kms is not initialized yet.
Found by "scripts/coccinelle/tests/odd_ptr_err.cocci".
PTR_ERR should access the value just tested by IS_ERR.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
More radeon fixes for 3.12. Kind of all over the place: UVD, DPM,
tiling, etc.
* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
drm/radeon/cik: fix overflow in vram fetch
drm/radeon: add missing hdmi callbacks for rv6xx
drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
drm/radeon: disable tests/benchmarks if accel is disabled
drm/radeon: don't set default clocks for SI when DPM is disabled
drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
drm/radeon/dpm: fetch the max clk from voltage dep tables helper
drm/radeon: fix missed variable sized access
drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2)
drm/radeon/cik: Add tiling mode index for 1D tiled depth/stencil surfaces
drm/radeon/cik: Fix encoding of number of banks in tiling configuration info
drm/radeon/cik: Fix printing of client name on VM protection fault
drm/radeon: additional gcc fixes for radeon_atombios.c
drm/radeon: avoid UVD corruption on AGP cards using GPU gart
In
commit 81e49f8114
Author: Glauber Costa <glommer@openvz.org>
Date: Wed Aug 28 10:18:13 2013 +1000
i915: bail out earlier when shrinker cannot acquire mutex
SHRINK_STOP was added to tell the core shrinker code to bail out and
go to the next shrinker since the i915 shrinker couldn't acquire
required locks. But the SHRINK_STOP return code was added to the
->count_objects callback and not the ->scan_objects callback as it
should have been, resulting in tons of dmesg noise like
shrink_slab: i915_gem_inactive_scan+0x0/0x9c negative objects to delete nr=-xxxxxxxxx
Fix discusssed with Dave Chinner.
References: http://www.spinics.net/lists/intel-gfx/msg33597.html
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Glauber Costa <glommer@openvz.org>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This regression has been introduced in
commit 9f11a9e4e5
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Jun 13 00:54:58 2013 +0200
drm/i915: set up PIPECONF explicitly for i9xx/vlv platforms
Ville brough up the idea that this is just the pipe A quirk gone
wrong.
Note that after resume the bios might or might not have enabled pipe A
already. We have a bit of magic to make sure that on resume we set up
a decent mode for pipe A, but I fear if I just smash pipe A to always
on we'd enable it in a bogus state and hang the hw. Hence the
readback.
v2: Clarify the logic a bit as suggested by Chris. Also amend the
commit message to clarify why we don't unconditionally enable the
pipe.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66462
References: https://lkml.org/lkml/2013/8/26/238
Cc: Meelis Roos <mroos@ut.ee>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Use |= instead of = as suggested by Chris.]
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The native TV encoder has it's own flags to adjust sync modes and
enabled interlaced modes which are totally irrelevant for the adjusted
mode. This worked out nicely since the input modes used by both the
load detect code and reported in the ->get_modes callbacks all have no
flags set, and we also don't fill out any of them in the ->get_config
callback.
This changed with the additional sanitation done with
commit 2960bc9cce
Author: Imre Deak <imre.deak@intel.com>
Date: Tue Jul 30 13:36:32 2013 +0300
drm/i915: make user mode sync polarity setting explicit
sinc now the "no flags at all" state wouldn't fit through core code
any more. So fix this up again by explicitly clearing the flags in the
->compute_config callback.
Aside: We have zero checking in place to make sure that the requested
mode is indeed the right input mode we want for the selected TV mode.
So we'll happily fall over if userspace tries to pull us. But that's
definitely work for a different patch series. So just add a FIXME
comment for now.
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There is no clear cut rules or specs for the retry interval, as there
are many factors that affect overall response time. Increase the
interval, and even more so on branch devices which may have limited i2c
bit rates.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=60263
Tested-by: Nicolas Suzor <nic@suzor.com>
Reviewed-by: Todd Previte <tprevite@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fix a bug that was introduced in commit c4c11dd160 ("drm/i2c: tda998x:
add video and audio input configuration") when Sebastian cleaned up my
original patch. Without this being fixed, audio is muted when the
display is turned off, never to be re-enabled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Darren Etheridge <detheridge@ti.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Missing ULL when calculating the amount of vram
leads to an overflow when the amount of vram is >= 4G.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
When dpm was merged, I added a new asic struct for
rv6xx, but it never got properly updated when the
hdmi callbacks were added due to the two patch sets
being developed in parallel.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=69729
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
In
commit edc3d8848d
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Thu May 23 13:55:35 2013 +0300
drm/i915: avoid big kmallocs on reading error state
we introduce a two-pass mechanism for splitting long strings being
formatted into the error-state. The first pass finds the length, and the
second pass emits the right portion of the string into the accumulation
buffer. Unfortunately we use the same va_list for both passes, resulting
in the second pass reading garbage off the end of the argument list. As
the two passes are only used for boundaries between read() calls, the
corruption is only rarely seen.
This fixes the root cause behind
commit baf27f9b17
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sat Jun 29 23:26:50 2013 +0100
drm/i915: Break up the large vsnprintf() in print_error_buffers()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Starting with UVD3 message and feedback buffers have their
own 256MB segment, so no need to force them into VRAM any more.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The tests are only usable if the acceleration engines have
been successfully initialized.
Based on an initial patch from: Alex Ivanov <gnidorah@p0n4ik.tk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This is a partial revert of c6cf7777a3.
We need to take into account the clk voltage dependencies of the
board. Not doing so can lead to stability issues on certain
boards if the clks exceed the levels in the dep tables.
DPM already takes that into account, so for optimal performance,
use DPM.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Filter out mclk and sclk levels higher than listed in the clk
voltage dependency tables. Supporting these clocks will require
additional driver tweaking that isn't supported yet.
See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Filter out mclk and sclk levels higher than listed in the clk
voltage dependency tables. Supporting these clocks will require
additional driver tweaking that isn't supported yet.
See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
filter out mclk and sclk levels higher than listed in the clk
voltage dependency tables. Supporting these clocks will require
additional driver tweaking that isn't supported yet.
See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Filter out mclk and sclk levels higher than listed in the clk
voltage dependency tables. Supporting these clocks will require
additional driver tweaking that isn't supported yet.
See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This patch adds a helper function to fetch the max clock
from the voltage clock dependecy tables. Clocks above that
level tend to be unstable and will require additional driver
tweaks in order to work properly.
This patch implemented the helper function to fetch the max clocks
from the dependency tables. The following patches implement the
per-asic clock filtering.
See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
I missed this when I fixed up this file.
Noticed-by: Mathias Fröhlich <Mathias.Froehlich@gmx.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Pull drm fixes from Dave Airlie:
- some small fixes for msm and exynos
- a regression revert affecting nouveau users with old userspace
- intel pageflip deadlock and gpu hang fixes, hsw modesetting hangs
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
Revert "drm: mark context support as a legacy subsystem"
drm/i915: Don't enable the cursor on a disable pipe
drm/i915: do not update cursor in crtc mode set
drm/exynos: fix return value check in lowlevel_buffer_allocate()
drm/exynos: Fix address space warnings in exynos_drm_fbdev.c
drm/exynos: Fix address space warning in exynos_drm_buf.c
drm/exynos: Remove redundant OF dependency
drm/msm: drop unnecessary set_need_resched()
drm/i915: kill set_need_resched
drm/msm: fix potential NULL pointer dereference
drm/i915/dvo: set crtc timings again for panel fixed modes
drm/i915/sdvo: Robustify the dtd<->drm_mode conversions
drm/msm: workaround for missing irq
drm/msm: return -EBUSY if bo still active
drm/msm: fix return value check in ERR_PTR()
drm/msm: fix cmdstream size check
drm/msm: hangcheck harder
drm/msm: handle read vs write fences
drm/i915/sdvo: Fully translate sync flags in the dtd->mode conversion
drm/i915: Use proper print format for debug prints
...
Prevent NULL pointer dereference in case when radeon_ring_fini() did it's job.
Reading of r100_cp_ring_info and radeon_ring_gfx debugfs entries will lead to a KP if ring buffer was deallocated, e.g. on failed ring test.
Seen on PA-RISC machine having "radeon: ring test failed (scratch(0x8504)=0xCAFEDEAD)" issue.
v2: agd5f: add some parens around ring->ready check
Signed-off-by: Alex Ivanov <gnidorah@p0n4ik.tk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
There are multiple valid values, not just 0 or 1. Required
to properly support 2D tiling in the userspace drivers.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The string is encoded from the MSB to the LSB of the register.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
If the user has forced the driver to use the internal GPU gart
rather than AGP on an AGP card, force the buffers to vram
as well.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Cc: stable@vger.kernel.org
A couple small msm fixes. Plus drop of set_need_resched().
* 'msm-fixes-3.12' of git://people.freedesktop.org/~robclark/linux:
drm/msm: drop unnecessary set_need_resched()
drm/msm: fix potential NULL pointer dereference
drm/msm: workaround for missing irq
drm/msm: return -EBUSY if bo still active
drm/msm: fix return value check in ERR_PTR()
drm/msm: fix cmdstream size check
drm/msm: hangcheck harder
drm/msm: handle read vs write fences
Just small fixes, and code cleanups.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: fix return value check in lowlevel_buffer_allocate()
drm/exynos: Fix address space warnings in exynos_drm_fbdev.c
drm/exynos: Fix address space warning in exynos_drm_buf.c
drm/exynos: Remove redundant OF dependency
Some more dealock fixes around pageflips and gpu hangs, fixes for hsw hangs
when doing modesets/dpms. And a few minor things to rectify issues with our
modeset state tracking which the checker spotted.
* tag 'drm-intel-fixes-2013-09-19' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Don't enable the cursor on a disable pipe
drm/i915: do not update cursor in crtc mode set
drm/i915: kill set_need_resched
drm/i915/dvo: set crtc timings again for panel fixed modes
drm/i915/sdvo: Robustify the dtd<->drm_mode conversions
drm/i915/sdvo: Fully translate sync flags in the dtd->mode conversion
drm/i915: Use proper print format for debug prints
drm/i915: fix wait_for_pending_flips vs gpu hang deadlock
drm/i915: Track pfit enable state separately from size
This reverts commit 7c510133d9.
Well looks like not enough digging was done, libdrm_nouveau before 2.4.33
used contexts,
292da616fe1f936ca78a3fa8e1b1b19883e343b6 nouveau: pull in major libdrm rewrite
got rid of them,
Reported-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Reported-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Pull drm radeon/nouveau/core fixes from Dave Airlie:
"Mostly radeon fixes, with some nouveau bios parser, ttm fix and a fix
for AST driver"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (42 commits)
drm/fb-helper: don't sleep for screen unblank when an oops is in progress
drm, ttm Fix uninitialized warning
drm/ttm: fix the tt_populated check in ttm_tt_destroy()
drm/nouveau/ttm: prevent double-free in nouveau_sgdma_create_ttm() failure path
drm/nouveau/bios/init: fix thinko in INIT_CONFIGURE_MEM
drm/nouveau/kms: enable for non-vga pci classes
drm/nouveau/bios/init: stub opcode 0xaa
drm/radeon: avoid UVD corruptions on AGP cards
drm/radeon: fix panel scaling with eDP and LVDS bridges
drm/radeon/dpm: rework auto performance level enable
drm/radeon: Fix hmdi typo
drm/radeon/dpm/rs780: fix force_performance state for same sclks
drm/radeon/dpm/rs780: don't enable sclk scaling if not required
drm/radeon/dpm/rs780: add some sanity checking to sclk scaling
drm/radeon/dpm/rs780: use drm_mode_vrefresh()
drm/udl: rip out set_need_resched
drm/ast: fix the ast open key function
drm/radeon/dpm: add bapm callback for kb/kv
drm/radeon/dpm: add bapm callback for trinity
drm/radeon/dpm: add infrastructure to properly handle bapm
...
Otherwise the system will burn even brighter and worse, leave the user
wondering what's going on exactly.
Since we already have a panic handler which will (try) to restore the
entire fbdev console mode, we can just bail out. Inspired by a patch from
Konstantin Khlebnikov. The callchain leading to this, cut&pasted from
Konstantin's original patch:
callstack:
panic()
bust_spinlocks(1)
unblank_screen()
vc->vc_sw->con_blank()
fbcon_blank()
fb_blank()
info->fbops->fb_blank()
drm_fb_helper_blank()
drm_fb_helper_dpms()
drm_modeset_lock_all()
mutex_lock(&dev->mode_config.mutex)
Note that the entire locking in the fb helper around panic/sysrq and kdbg
is ... non-existant. So we have a decent change of blowing up
everything. But since reworking this ties in with funny concepts like the
fbdev notifier chain or the impressive things which happen around
console_lock while oopsing, I'll leave that as an exercise for braver
souls than me.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Dave Airlie <airlied@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Fix uninitialized warning.
drivers/gpu/drm/ttm/ttm_object.c: In function ‘ttm_base_object_lookup’:
drivers/gpu/drm/ttm/ttm_object.c:213:10: error: ‘base’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
kref_put(&base->refcount, ttm_release_base);
^
drivers/gpu/drm/ttm/ttm_object.c:221:26: note: ‘base’ was declared here
struct ttm_base_object *base;
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
After a vmalloc failure in ttm_dma_tt_alloc_page_directory(),
ttm_dma_tt_init() will call ttm_tt_destroy() to cleanup, and end up
inside the driver's unpopulate() hook when populate() has never yet
been called.
On nouveau, the first issue to be hit because of this is that
dma_address[] may be a NULL pointer. After working around this,
ttm_pool_unpopulate() may potentially hit the same issue with
the pages[] array.
It seems to make more sense to avoid calling unpopulate on already
unpopulated TTMs than to add checks to all the implementations.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: stable@vger.kernel.org
Cc: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
A couple of bios parser fixes (one for ancient chips, another for new ones - important in Optimus configs). Another to make sure KMS is enabled on certain Optimus configs, and a TTM failure path fix.
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau/ttm: prevent double-free in nouveau_sgdma_create_ttm() failure path
drm/nouveau/bios/init: fix thinko in INIT_CONFIGURE_MEM
drm/nouveau/kms: enable for non-vga pci classes
drm/nouveau/bios/init: stub opcode 0xaa
On HSW enabling a plane on a disabled pipe may hang the entire system.
And there's no good reason for doing it ever, so just don't.
v2: Move the crtc active checks to intel_crtc_cursor_{set,move} to
avoid confusing people during modeset
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The cursor is disabled before crtc mode set in crtc disable (and we
assert this is the case), and enabled afterwards in crtc enable. Do not
update it in crtc mode set.
On HSW enabling a plane on a disabled pipe may hang the entire system.
And there's no good reason for doing it ever, so just don't.
v2: Add note about HSW hangs - vsyrjala
Cc: stable@vger.kernel.org
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
