drm/amdgpu: remove check for BO reservation add assert instead

We should leave such checks to lockdep and not implement something
manually.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: ChristianKoenigAMD

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

@@ -651,18 +651,7 @@ int amdgpu_vm_validate(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 		spin_unlock(&vm->status_lock);
 
 		bo = bo_base->bo;
-
-		if (dma_resv_locking_ctx(bo->tbo.base.resv) != ticket) {
-			struct amdgpu_task_info *ti = amdgpu_vm_get_task_info_vm(vm);
-
-			pr_warn_ratelimited("Evicted user BO is not reserved\n");
-			if (ti) {
-				pr_warn_ratelimited("pid %d\n", ti->task.pid);
-				amdgpu_vm_put_task_info(ti);
-			}
-
-			return -EINVAL;
-		}
+		dma_resv_assert_held(bo->tbo.base.resv);
 
 		r = validate(param, bo);
 		if (r)