Commit 0a5f49cb authored by Philip Yang's avatar Philip Yang Committed by Alex Deucher
Browse files

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: default avatarPhilip Yang <Philip.Yang@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7e4545d3

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

+3 −2
Original line number Diff line number Diff line
@@ -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);

}



/**

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