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drm/amdgpu: use spin_lock_irqsave to protect vm_manager.pasid_idr

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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>
This commit is contained in:
Philip Yang 2019-01-30 15:21:16 -05:00 • committed by Alex Deucher
parent 7e4545d372
commit 0a5f49cbf9
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -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_task_info *task_info)
{ {
struct amdgpu_vm *vm; 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); vm = idr_find(&adev->vm_manager.pasid_idr, pasid);
if (vm) if (vm)
*task_info = vm->task_info; *task_info = vm->task_info;
spin_unlock(&adev->vm_manager.pasid_lock); spin_unlock_irqrestore(&adev->vm_manager.pasid_lock, flags);
} }
/** /**