drm/amd/display: Varibright add null check

Add null check for stream update

Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
SivapiriyanKumarasamy 2018-02-23 19:01:07 -05:00 • committed by Alex Deucher
commit a7596f25db