This is a note to let you know that I've just added the patch titled
drm/amd/display: Add NULL plane_state check for cursor disable logic
to the 6.3-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-add-null-plane_state-check-for-cursor-disable-logic.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d29fb7baab09b6a1dc484c9c67933253883e770a Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Date: Sat, 11 Mar 2023 09:11:29 -0500
Subject: drm/amd/display: Add NULL plane_state check for cursor disable logic
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
commit d29fb7baab09b6a1dc484c9c67933253883e770a upstream.
[Why]
While scanning the top_pipe connections we can run into a case where
the bottom pipe is still connected to a top_pipe but with a NULL
plane_state.
[How]
Treat a NULL plane_state the same as the plane being invisible for
pipe cursor disable logic.
Cc: stable@xxxxxxxxxxxxxxx
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Charlene Liu <Charlene.Liu@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -3385,7 +3385,9 @@ static bool dcn10_can_pipe_disable_curso
for (test_pipe = pipe_ctx->top_pipe; test_pipe;
test_pipe = test_pipe->top_pipe) {
// Skip invisible layer and pipe-split plane on same layer
- if (!test_pipe->plane_state->visible || test_pipe->plane_state->layer_index == cur_layer)
+ if (!test_pipe->plane_state ||
+ !test_pipe->plane_state->visible ||
+ test_pipe->plane_state->layer_index == cur_layer)
continue;
r2 = test_pipe->plane_res.scl_data.recout;
Patches currently in stable-queue which might be from nicholas.kazlauskas@xxxxxxx are
queue-6.3/drm-amd-display-add-null-plane_state-check-for-cursor-disable-logic.patch
queue-6.3/drm-amd-display-fix-4to1-mpc-black-screen-with-dpp-rco.patch
