check_bodev_null_return
check_bodev_null_return(bdev, -EINVAL);
check_bodev_null_return(bdev, NULL);
check_bodev_null_return(bdev, -EINVAL);
check_bodev_null_return(bdev, -EINVAL);
check_bodev_null_return(bdev, NULL);
check_bodev_null_return(bdev, NULL);
check_bodev_null_return(bdev, NULL);