diff options
| author | Roman Li <Roman.Li@amd.com> | 2021-04-19 11:47:00 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-10 18:06:44 -0400 |
| commit | cf8b92a75646735136053ce51107bfa8cfc23191 (patch) | |
| tree | 355f3c1e24fe1b30507dbaa3fc97b15274eeb111 /drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | |
| parent | 2e4ec251628f6d43c1df5351d744b1aed4583ae4 (diff) | |
drm/amd/display: fix potential gpu reset deadlock
[Why]
In gpu reset dc_lock acquired in dm_suspend().
Asynchronously handle_hpd_rx_irq can also be called
through amdgpu_dm_irq_suspend->flush_work, which also
tries to acquire dc_lock. That causes a deadlock.
[How]
Check if amdgpu executing reset before acquiring dc_lock.
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c')
0 files changed, 0 insertions, 0 deletions