diff options
| author | Aric Cyr <[email protected]> | 2020-09-18 15:45:04 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2020-10-05 19:16:11 +0000 |
| commit | f7fb81a18f026b70e42ccc95c7d4485b0cdbfbbf (patch) | |
| tree | 05232c30817f2ee9f02095aaa30b09febb28ba0d /drivers/gpu/drm/amd/display/modules/freesync/freesync.c | |
| parent | drm/amd/display: Don't allow pstate if no support in blank (diff) | |
| download | kernel-f7fb81a18f026b70e42ccc95c7d4485b0cdbfbbf.tar.gz kernel-f7fb81a18f026b70e42ccc95c7d4485b0cdbfbbf.zip | |
drm/amd/display: Check for flip pending before locking pipes
[Why]
When running games or benchmarking with v-sync disabled, disabling
a plane (which is v-sync) can cause underflow. This is caused by
flips pending before pipe locking being applied after locks are
released and pipes could have been re-arranged or disconnected. This
could potentially apply a flip on incorrect pipe. Also, previous logic
of always locking pipes was unnecessary.
[How]
Only lock the pipes when there is a pipe being disabled to increase
efficiency. Before the pipes are locked, check that any pending flips
are cleared to ensure the flips are applied to the correct pipe.
Signed-off-by: Aric Cyr <[email protected]>
Acked-by: Eryk Brol <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
0 files changed, 0 insertions, 0 deletions