drm/amd/display: do not dereference on NULL

WARN_ON() will not kill the process so the second WARN_ON()
will try to dereference NULL pointer.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 f14700a..4fd6f4a 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9013,7 +9013,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
                }
 
                status = dc_stream_get_status(dm_new_crtc_state->stream);
-               WARN_ON(!status);
+
+               if (WARN_ON(!status))
+                       continue;
+
                WARN_ON(!status->plane_count);
 
                /*