drm/amd/display: Fix deadlock when falling back to v2 from v3
[Why] A deadlock in the kernel occurs when we fallback from the V3 to V2 add_topology_to_display or remove_topology_to_display because they both try to acquire the dtm_mutex but recursive locking isn't supported on mutex_lock(). [How] Make the mutex_lock/unlock more fine grained and move them up such that they're only required for the psp invocation itself. Fixes: bf62221e ("drm/amd/display: Add DCN3.1 HDCP support") Signed-off-by:Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by:
Aric Cyr <aric.cyr@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
parent
54149d13