linux-toradex.git/drivers/gpu, branch v4.4.23

qxl: check for kmap failures

2016-09-30T08:18:39+00:00

commit f4cceb2affcd1285d4ce498089e8a79f4cd2fa66 upstream.

If kmap fails, it leads to memory corruption.

Fixes: f64122c1f6ad ('drm: add new QXL driver. (v1.4)')
Signed-off-by: Dan Carpenter 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20160711084633.GA31411@mwanda
Signed-off-by: Greg Kroah-Hartman

nouveau: fix nv40_perfctr_next() cleanup regression

2016-09-30T08:18:36+00:00

commit 86d65b7e7a0c927d07d18605c276d0f142438ead upstream.

gcc-6 warns about code in the nouveau driver that is obviously silly:

drivers/gpu/drm/nouveau/nvkm/engine/pm/nv40.c: In function 'nv40_perfctr_next':
drivers/gpu/drm/nouveau/nvkm/engine/pm/nv40.c:62:19: warning: self-comparison always evaluats to false [-Wtautological-compare]
  if (pm->sequence != pm->sequence) {

The behavior was accidentally introduced in a patch described as "This is
purely preparation for upcoming commits, there should be no code changes here.".
As far as I can tell, that was true for the rest of that patch except for
this one function, which has been changed to a NOP.

This patch restores the original behavior.

Signed-off-by: Arnd Bergmann 
Fixes: 8c1aeaa13954 ("drm/nouveau/pm: cosmetic changes")
Reviewed-by: Ben Skeggs 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm: Only use compat ioctl for addfb2 on X86/IA64

2016-09-24T08:07:43+00:00

commit 47a66e45d7a7613322549c2475ea9d809baaf514 upstream.

Similar to struct drm_update_draw, struct drm_mode_fb_cmd2 has an
unaligned 64 bit field (modifier). This get packed differently between
32 bit and 64 bit modes on architectures that can handle unaligned 64
bit access (X86 and IA64).  Other architectures pack the structs the
same and don't need the compat wrapper. Use the same condition for
drm_mode_fb_cmd2 as we use for drm_update_draw.

Note that only the modifier will be packed differently between compat
and non-compat versions.

Reviewed-by: Rob Clark 
Signed-off-by: Kristian H. Kristensen 
[seanpaul added not at bottom of commit msg re: modifier]
Signed-off-by: Sean Paul 
Link: http://patchwork.freedesktop.org/patch/msgid/1473801645-116011-1-git-send-email-hoegsberg@chromium.org
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm: atmel-hlcdc: Fix vertical scaling

2016-09-24T08:07:42+00:00

commit d31ed3f05763644840c654a384eaefa94c097ba2 upstream.

The code is applying the same scaling for the X and Y components,
thus making the scaling feature only functional when both components
have the same scaling factor.

Do the s/_w/_h/ replacement where appropriate to fix vertical scaling.

Signed-off-by: Jan Leupold 
Fixes: 1a396789f65a2 ("drm: add Atmel HLCDC Display Controller support")
Signed-off-by: Boris Brezillon 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Avoid pointer arithmetic in calculating plane surface offset

2016-09-24T08:07:42+00:00

commit 44eb0cb9620c6a53ec8e7073262e2af8079b727f upstream.

VMA offsets are 64 bits. Plane surface offsets are in ggtt and
the hardware register to set this is thus 32 bits. Be explicit
about these and convert carefully to from vma to final size.

This will make sparse happy by not creating 32bit pointers out
of 64bit vma offsets.

Cc: Tvrtko Ursulin 
Signed-off-by: Mika Kuoppala 
Link: http://patchwork.freedesktop.org/patch/msgid/1446204375-29831-1-git-send-email-mika.kuoppala@intel.com
Reviewed-by: Tvrtko Ursulin 
Signed-off-by: Ville Syrjälä 
Signed-off-by: Greg Kroah-Hartman

gma500: remove annoying deprecation warning

2016-09-24T08:07:42+00:00

commit 166c5a6ef765653848161e6f4af81c05e4b3ecf6 upstream.

In commit e45708976aea ("drm/dp-helper: Move the legacy helpers to
gma500") the legacy i2c helpers were moved to the only remaining user of
them, the gma500 driver.  Together with that move, i2c_dp_aux_add_bus()
was marked deprecated and started warning about its remaining use.

It's now been a year and a half of annoying warning, and apparently
nobody cares enough about gma500 to try to move it along to the more
modern models.

Get rid of the warning - if even the gma500 people don't care enough,
then they should certainly not spam other innocent developers with a
warning that might hide other, much more real issues.

Cc: Daniel Vetter 
Cc: Alan Cox 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

drm/msm: fix use of copy_from_user() while holding spinlock

2016-09-15T06:27:51+00:00

commit 89f82cbb0d5c0ab768c8d02914188aa2211cd2e3 upstream.

Use instead __copy_from_user_inatomic() and fallback to slow-path where
we drop and re-aquire the lock in case of fault.

Reported-by: Vaishali Thakkar 
Signed-off-by: Rob Clark 
Signed-off-by: Greg Kroah-Hartman

drm: Reject page_flip for !DRIVER_MODESET

2016-09-15T06:27:51+00:00

commit 6f00975c619064a18c23fd3aced325ae165a73b9 upstream.

Somehow this one slipped through, which means drivers without modeset
support can be oopsed (since those also don't call
drm_mode_config_init, which means the crtc lookup will chase an
uninitalized idr).

Reported-by: Alexander Potapenko 
Cc: Alexander Potapenko 
Signed-off-by: Daniel Vetter 
Reviewed-by: Chris Wilson 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon: fix radeon_move_blit on 32bit systems

2016-09-15T06:27:51+00:00

commit 13f479b9df4e2bbf2d16e7e1b02f3f55f70e2455 upstream.

This bug seems to be present for a very long time.

Signed-off-by: Christian König 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/cz: enable/disable vce dpm even if vce pg is disabled

2016-09-15T06:27:50+00:00

[ Upstream commit b3dae7828399ef316e3fabf7e82c6415cb03a02e ]

I missed this when cleaning up the vce pg handling.

Reviewed-by: Christian König 
Reviewed-by: Rex Zhu 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman