From: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com
[ Upstream commit 4f7129112c2a30331f3045a42026fad82e6cb72b ]
[Why] Fix surface/plane potential nullptr
[How] add null check
Signed-off-by: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com Reviewed-by: Aric Cyr Aric.Cyr@amd.com Acked-by: Leo Li sunpeng.li@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 3118ae0e7a87..315a245aedc2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5333,6 +5333,12 @@ enum surface_update_type dm_determine_update_type_for_commit(struct dc *dc, stru struct dc_stream_update stream_update; enum surface_update_type update_type = UPDATE_TYPE_FAST;
+ if (!updates || !surface) { + DRM_ERROR("Plane or surface update failed to allocate"); + /* Set type to FULL to avoid crashing in DC*/ + update_type = UPDATE_TYPE_FULL; + goto ret; + }
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { new_dm_crtc_state = to_dm_crtc_state(new_crtc_state);