ttm_bo_init_validate
ret = ttm_bo_init_validate(bdev, &gbo->bo, ttm_bo_type_device,
ret = ttm_bo_init_validate(bdev, tbo, bo_type, &lbo->placement, 0,
r = ttm_bo_init_validate(&rdev->mman.bdev, &bo->tbo, type,
EXPORT_SYMBOL(ttm_bo_init_validate);
int ttm_bo_init_validate(struct ttm_device *bdev, struct ttm_buffer_object *bo,