From: Roman Li Roman.Li@amd.com

[Why] While system undergoing gpu reset always do full update to sync the dc state before and after reset.

[How] Return true in should_reset_plane() if gpu reset detected

Cc: stable@vger.kernel.org

Reviewed-by: Aurabindo Pillai aurabindo.pillai@amd.com Reviewed-by: Mario Limonciello mario.limonciello@amd.com Signed-off-by: Roman Li Roman.Li@amd.com Signed-off-by: Zaeem Mohamed zaeem.mohamed@amd.com --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++ 1 file changed, 3 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 dace1e42f412..46e0de6cc277 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -11122,6 +11122,9 @@ static bool should_reset_plane(struct drm_atomic_state *state, state->allow_modeset) return true;

+ if (amdgpu_in_reset(adev) && state->allow_modeset) + return true; + /* Exit early if we know that we're adding or removing the plane. */ if (old_plane_state->crtc != new_plane_state->crtc) return true;