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| author | Philip Yang <Philip.Yang@amd.com> | 2019-01-30 15:21:16 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-02-05 18:10:24 -0500 |
| commit | 0a5f49cbf9d6ad3721c16f8a6d823363ea7a160f (patch) | |
| tree | 9d30f4c625e164ab9402f0cb55dc0af1ee9f697c /drivers | |
| parent | 7e4545d372b560df10fa47281ef0783a479ce435 (diff) | |
| download | linux-0a5f49cbf9d6ad3721c16f8a6d823363ea7a160f.tar.gz | |
drm/amdgpu: use spin_lock_irqsave to protect vm_manager.pasid_idr
amdgpu_vm_get_task_info is called from interrupt handler and sched timeout workqueue, we should use irq version spin_lock to avoid deadlock. Signed-off-by: Philip Yang <Philip.Yang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index d2ea5ce2cefb..7c108e687683 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -3363,14 +3363,15 @@ void amdgpu_vm_get_task_info(struct amdgpu_device *adev, unsigned int pasid, struct amdgpu_task_info *task_info) { struct amdgpu_vm *vm; + unsigned long flags; - spin_lock(&adev->vm_manager.pasid_lock); + spin_lock_irqsave(&adev->vm_manager.pasid_lock, flags); vm = idr_find(&adev->vm_manager.pasid_idr, pasid); if (vm) *task_info = vm->task_info; - spin_unlock(&adev->vm_manager.pasid_lock); + spin_unlock_irqrestore(&adev->vm_manager.pasid_lock, flags); } /** |