From: Martin Tsai <martin.tsai@xxxxxxx>
[Why]
Without acquiring DMCUB hw lock, a race condition is caused with
Panel Replay feature, which will trigger a hang. Indicate that a
lock is necessary to prevent this when replay feature is enabled.
[How]
To allow dmub hw lock on Replay.
Reviewed-by: Robin Chen <robin.chen@xxxxxxx>
Acked-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Martin Tsai <martin.tsai@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
index ba1fec3016d5..bf636b28e3e1 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
@@ -65,5 +65,9 @@ bool should_use_dmub_lock(struct dc_link *link)
{
if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
return true;
+
+ if (link->replay_settings.replay_feature_enabled)
+ return true;
+
return false;
}
--
2.43.0
