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| author | Alan Liu <haoping.liu@amd.com> | 2023-06-27 12:21:51 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-07-18 11:14:56 -0400 |
| commit | fff7b95a5046be01df5883b3297139cf21bc8763 (patch) | |
| tree | 5943db2fc6f7e4adeb4c7973f1666a3c5c643cbc /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | c4ba2b50f2be8f0ce7bed41d9e5aca66dffc41d2 (diff) | |
| download | linux-fff7b95a5046be01df5883b3297139cf21bc8763.tar.gz linux-fff7b95a5046be01df5883b3297139cf21bc8763.tar.bz2 linux-fff7b95a5046be01df5883b3297139cf21bc8763.zip | |
drm/amd/display: Fix race condition when turning off an output alone
[Why]
When 2 threads are doing commit_tail parallelly, one thread could
commit new streams to dc state but another thread remove it from dc
right away.
[How]
If we don't have new dm state change from commit_check, then we should
not call dc_commit_streams() in commit_tail. A new function
amdgpu_dm_commit_streams() is introduced to refator dc_commit_stream()
adjacent code and fix this issue.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: Alan Liu <haoping.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
0 files changed, 0 insertions, 0 deletions