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drm/amd/display: Fix dmesg warning from setting abm level 

[ Upstream commit c5892a1021 ]

[Why]
Setting abm level does not correctly update CRTC state. As a result
no surface update is added to dc stream state and triggers warning.

[How]
Correctly update CRTC state when setting abm level property.

CC: Stable <stable@vger.kernel.org>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Stylon Wang 2020-06-30 17:55:29 +08:00 committed by Greg Kroah-Hartman
parent 8522b1bec8
commit a2038eb833
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -7306,6 +7306,29 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
if (ret)
goto fail;
/* Check connector changes */
for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state);
struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
/* Skip connectors that are disabled or part of modeset already. */
if (!old_con_state->crtc && !new_con_state->crtc)
continue;
if (!new_con_state->crtc)
continue;
new_crtc_state = drm_atomic_get_crtc_state(state, new_con_state->crtc);
if (IS_ERR(new_crtc_state)) {
ret = PTR_ERR(new_crtc_state);
goto fail;
}
if (dm_old_con_state->abm_level !=
dm_new_con_state->abm_level)
new_crtc_state->connectors_changed = true;
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (adev->asic_type >= CHIP_NAVI10) {
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {