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drm/amd/display: Fail atomic_check early on normalize_zpos error

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commit 2a00299e74 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: b261509952 ("drm/amd/display: Fix double cursor on non-video RGB MPO")
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leo Li
2023-02-09 12:15:21 -05:00
committed by Greg Kroah-Hartman
parent dbe3529e81
commit 020eccac74
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -9556,7 +9556,11 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
* `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) {