drm_atomic_helper_suspend() can return PTR_ERR(), in which case the error gets stored into `dm->cached_state`. This can cause failures during resume. Catch the error during suspend and fail the suspend instead.
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2362 Acked-by: Christian König <christian.koe...@amd.com> Acked-by: Alex Deucher <alexander.deuc...@amd.com> Signed-off-by: Mario Limonciello <mario.limoncie...@amd.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ 1 file changed, 2 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 bd6cb8ffda7f..97e21bbac5cf 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2698,6 +2698,8 @@ static int dm_suspend(void *handle) WARN_ON(adev->dm.cached_state); adev->dm.cached_state = drm_atomic_helper_suspend(adev_to_drm(adev)); + if (IS_ERR(adev->dm.cached_state)) + return PTR_ERR(adev->dm.cached_state); s3_handle_mst(adev_to_drm(adev), true); -- 2.34.1
