This is a note to let you know that I've just added the patch titled
drm/amd/display: Fix ineffective setting of max bpc property
to the 5.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-fix-ineffective-setting-of-max-bpc-p.patch
and it can be found in the queue-5.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7ef093ff596f584af41323b96029ad85510ae4d4
Author: Stylon Wang <stylon.wang@xxxxxxx>
Date: Fri Jun 12 19:04:18 2020 +0800
drm/amd/display: Fix ineffective setting of max bpc property
[ Upstream commit fa7041d9d2fc7401cece43f305eb5b87b7017fc4 ]
[Why]
Regression was introduced where setting max bpc property has no effect
on the atomic check and final commit. It has the same effect as max bpc
being stuck at 8.
[How]
Correctly propagate max bpc with the new connector state.
Signed-off-by: Stylon Wang <stylon.wang@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 b7e161f2a47d4..69b1f61928eff 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4808,7 +4808,8 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector,
struct drm_connector *connector = &aconnector->base;
struct amdgpu_device *adev = connector->dev->dev_private;
struct dc_stream_state *stream;
- int requested_bpc = connector->state ? connector->state->max_requested_bpc : 8;
+ const struct drm_connector_state *drm_state = dm_state ? &dm_state->base : NULL;
+ int requested_bpc = drm_state ? drm_state->max_requested_bpc : 8;
enum dc_status dc_result = DC_OK;
do {
