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| author | Nicholas Kazlauskas <[email protected]> | 2021-10-22 20:14:24 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2021-10-28 02:04:50 +0000 |
| commit | ad76744b041d8c87ef1c9adbb04fb7eaa20a179e (patch) | |
| tree | c9c3c7b485325a38cecd9ded1098d57f3f5bd022 /scripts/gcc-plugins/randomize_layout_plugin.c | |
| parent | drm/amd/display: Fallback to clocks which meet requested voltage on DCN31 (diff) | |
| download | kernel-ad76744b041d8c87ef1c9adbb04fb7eaa20a179e.tar.gz kernel-ad76744b041d8c87ef1c9adbb04fb7eaa20a179e.zip | |
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: bf62221e9d0e ("drm/amd/display: Add DCN3.1 HDCP support")
Signed-off-by: Nicholas Kazlauskas <[email protected]>
Reviewed-by: Aric Cyr <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
Diffstat (limited to 'scripts/gcc-plugins/randomize_layout_plugin.c')
0 files changed, 0 insertions, 0 deletions