From 1a38ded4bc8ac09fd029ec656b1e2c98cc0d238c Mon Sep 17 00:00:00 2001 From: Wayne Lin Date: Fri, 23 Jan 2026 14:47:01 +0800 Subject: [PATCH] drm/amd/display: Avoid updating surface with the same surface under MPO [Why & How] Although it's dummy updates of surface update for committing stream updates, we should not have dummy_updates[j].surface all indicating to the same surface under multiple surfaces case. Otherwise, copy_surface_update_to_plane() in update_planes_and_stream_state() will update to the same surface only. Reviewed-by: Harry Wentland Signed-off-by: Wayne Lin Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 d870ce267b37..9fcb4677d0f0 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -10974,7 +10974,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) continue; } for (j = 0; j < status->plane_count; j++) - dummy_updates[j].surface = status->plane_states[0]; + dummy_updates[j].surface = status->plane_states[j]; sort(dummy_updates, status->plane_count, sizeof(*dummy_updates), dm_plane_layer_index_cmp, NULL); -- 2.30.2