drm/amd/display: Check engine is not NULL before acquiring
authorAric Cyr <aric.cyr@amd.com>
Wed, 22 Jan 2020 03:50:13 +0000 (22:50 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 11 Feb 2020 20:07:03 +0000 (15:07 -0500)
commit2b63d0ec0daf79ba503fa8bfa25e07dc3da274f3
tree2e810bb7a16fe3f34b46f24eede5cff58e629fe3
parentaad927b5a863178a9d921044e52d66e0ccf0aff9
drm/amd/display: Check engine is not NULL before acquiring

[Why]
Engine can be NULL in some cases, so we must not acquire it.

[How]
Check for NULL engine before acquiring.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/dce/dce_aux.c