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Commit 3d5a08c1 authored by monk.liu's avatar monk.liu Committed by Alex Deucher
Browse files

drm/amdgpu: max_pde_used usage should be under protect 



Need to take the lock when accessing this.

Signed-off-by: default avatarmonk.liu <monk.liu@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarJammy Zhou <jammy.zhou@amd.com>
parent ca952613

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

+5 −1
Original line number Diff line number Diff line
@@ -90,10 +90,13 @@ struct amdgpu_bo_list_entry *amdgpu_vm_get_bos(struct amdgpu_device *adev, 
	struct amdgpu_bo_list_entry *list;

	unsigned i, idx;



	mutex_lock(&vm->mutex);

	list = drm_malloc_ab(vm->max_pde_used + 2,

			     sizeof(struct amdgpu_bo_list_entry));

	if (!list)

	if (!list) {

		mutex_unlock(&vm->mutex);

		return NULL;

	}



	/* add the vm page table to the list */

	list[0].robj = vm->page_directory;
@@ -116,6 +119,7 @@ struct amdgpu_bo_list_entry *amdgpu_vm_get_bos(struct amdgpu_device *adev, 
		list[idx].tv.shared = true;

		list_add(&list[idx++].tv.head, head);

	}

	mutex_unlock(&vm->mutex);



	return list;

}