This is a note to let you know that I've just added the patch titled
drm/amd/display: Device flash garbage before get in OS
to the 5.19-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-device-flash-garbage-before-get-in-o.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 22568d32d70d6c3a3b7e9eeff7ee70c82a5a9799
Author: Chiawen Huang <chiawen.huang@xxxxxxx>
Date: Thu Jul 21 21:57:05 2022 +0800
drm/amd/display: Device flash garbage before get in OS
[ Upstream commit 9c580e8f6cd6524d4e2c3490c440110526f7ddd6 ]
[Why]
Enabling stream with tg lock makes config settings
pending causing the garbage until tg unlock.
[How]
Keep the original lock mechanism
The driver doesn't lock tg if plane_state is null.
Reviewed-by: Anthony Koo <Anthony.Koo@xxxxxxx>
Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Chiawen Huang <chiawen.huang@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index e3a62873c0e70..d9ab279915355 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -108,6 +108,7 @@ void dcn10_lock_all_pipes(struct dc *dc,
*/
if (pipe_ctx->top_pipe ||
!pipe_ctx->stream ||
+ !pipe_ctx->plane_state ||
!tg->funcs->is_tg_enabled(tg))
continue;
