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drm/amdgpu: Fix module unload hang with RAS enabled

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The driver unload hangs because the page retirement
kthread cannot be stopped as it is sleeping and waiting
on page retirement event to occur. Add kthread_should_stop()
to the event condition to wake up the kthread when kthread
stop is called during driver unload.

Fixes: 3fdcd0a31d ("drm/amdgpu: Prepare for asynchronous processing of umc page retirement")
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mukul Joshi 2024-01-24 10:14:51 +08:00 committed by Alex Deucher
parent 1e201202ed
commit c84a7e21db
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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@ -2670,8 +2670,12 @@ static int amdgpu_ras_page_retirement_thread(void *param)
while (!kthread_should_stop()) {
wait_event_interruptible(con->page_retirement_wq,
kthread_should_stop() ||
atomic_read(&con->page_retirement_req_cnt));
if (kthread_should_stop())
break;
dev_info(adev->dev, "Start processing page retirement. request:%d\n",
atomic_read(&con->page_retirement_req_cnt));