[PATCH 1/3] drm/amdgpu/dm/mst: Stop grabbing mst_mgr->lock in compute_mst_dsc_configs_for_state()

[Lyude Paul]

Noticed this while trying to update amdgpu for the non-atomic MST removal
changes - for some reason we appear to grab mst_mgr->lock before computing
mst DSC configs. This is wrong though - mst_mgr->lock is only needed while
traversing the actual MST topology state - which is not typically something
that DRM drivers should be doing themselves anyway.

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 9221b6690a4a..cb3b0e08acc4 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -1056,13 +1056,10 @@ bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
 		if (!is_dsc_need_re_compute(state, dc_state, stream->link))
 			continue;
 
-		mutex_lock(&aconnector->mst_mgr.lock);
 		if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link,
 			vars, &link_vars_start_index)) {
-			mutex_unlock(&aconnector->mst_mgr.lock);
 			return false;
 		}
-		mutex_unlock(&aconnector->mst_mgr.lock);
 
 		for (j = 0; j < dc_state->stream_count; j++) {
 			if (dc_state->streams[j]->link == stream->link)
-- 
2.35.3