From: Alex Hung <alex.hung@xxxxxxx> [Why & How] amdgpu_dm_find_first_crtc_matching_connector can return NULL. It is necessary to the returned connector before passing it drm_atomic_get_new_connector_state which always assumes connector is not NULL. Reviewed-by: Roman Li <roman.li@xxxxxxx> Signed-off-by: Alex Hung <alex.hung@xxxxxxx> Signed-off-by: Wayne Lin <wayne.lin@xxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 0d14a0d5def3..5c956b9962dc 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -1631,6 +1631,9 @@ int pre_validate_dsc(struct drm_atomic_state *state, connector = amdgpu_dm_find_first_crtc_matching_connector(state, state->crtcs[ind].ptr); + if (!connector) + continue; + drm_new_conn_state = drm_atomic_get_new_connector_state(state, connector); -- 2.37.3
