bsg_register_queue
bset->bd = bsg_register_queue(q, dev, name, bsg_transport_sg_io_fn, NULL);
EXPORT_SYMBOL_GPL(bsg_register_queue);
return bsg_register_queue(sdev->request_queue, &sdev->sdev_gendev,
struct bsg_device *bsg_register_queue(struct request_queue *q,