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drm/amdgpu: fix the nullptr issue when reenter GPU recovery 

in single gpu system, if driver reenter gpu recovery,
amdgpu_device_lock_adev will return false, but hive is
nullptr now.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dennis Li 2020-08-20 10:17:39 +08:00 committed by Alex Deucher
parent 6049db43d6
commit cbfd17f7ba
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -4371,8 +4371,8 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
if (!amdgpu_device_lock_adev(tmp_adev)) {
DRM_INFO("Bailing on TDR for s_job:%llx, as another already in progress",
job ? job->base.id : -1);
mutex_unlock(&hive->hive_lock);
return 0;
r = 0;
goto skip_recovery;
}
/*
@ -4505,6 +4505,7 @@ skip_sched_resume:
amdgpu_device_unlock_adev(tmp_adev);
}
skip_recovery:
if (hive) {
atomic_set(&hive->in_reset, 0);
mutex_unlock(&hive->hive_lock);