This is a note to let you know that I've just added the patch titled
drm/amd/display: Fail atomic_check early on normalize_zpos error
to the 5.15-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-fail-atomic_check-early-on-normalize_zpos-error.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2a00299e7447395d0898e7c6214817c06a61a8e8 Mon Sep 17 00:00:00 2001
From: Leo Li <sunpeng.li@xxxxxxx>
Date: Thu, 9 Feb 2023 12:15:21 -0500
Subject: drm/amd/display: Fail atomic_check early on normalize_zpos error
From: Leo Li <sunpeng.li@xxxxxxx>
commit 2a00299e7447395d0898e7c6214817c06a61a8e8 upstream.
[Why]
drm_atomic_normalize_zpos() can return an error code when there's
modeset lock contention. This was being ignored.
[How]
Bail out of atomic check if normalize_zpos() returns an error.
Fixes: b261509952bc ("drm/amd/display: Fix double cursor on non-video RGB MPO")
Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx>
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10889,7 +10889,11 @@ static int amdgpu_dm_atomic_check(struct
* `dcn10_can_pipe_disable_cursor`). By now, all modified planes are in
* atomic state, so call drm helper to normalize zpos.
*/
- drm_atomic_normalize_zpos(dev, state);
+ ret = drm_atomic_normalize_zpos(dev, state);
+ if (ret) {
+ drm_dbg(dev, "drm_atomic_normalize_zpos() failed\n");
+ goto fail;
+ }
/* Remove exiting planes if they are modified */
for_each_oldnew_plane_in_state_reverse(state, plane, old_plane_state, new_plane_state, i) {
Patches currently in stable-queue which might be from sunpeng.li@xxxxxxx are
queue-5.15/drm-amd-display-fail-atomic_check-early-on-normalize_zpos-error.patch
