340 int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)  in add_mtd_blktrans_dev()  argument
342 	struct mtd_blktrans_ops *tr = new->tr;  in add_mtd_blktrans_dev()
355 		if (new->devnum == -1) {  in add_mtd_blktrans_dev()
359 				new->devnum = last_devnum+1;  in add_mtd_blktrans_dev()
360 				list_add_tail(&new->list, &d->list);  in add_mtd_blktrans_dev()
363 		} else if (d->devnum == new->devnum) {  in add_mtd_blktrans_dev()
367 		} else if (d->devnum > new->devnum) {  in add_mtd_blktrans_dev()
369 			list_add_tail(&new->list, &d->list);  in add_mtd_blktrans_dev()
376 	if (new->devnum == -1)  in add_mtd_blktrans_dev()
377 		new->devnum = last_devnum+1;  in add_mtd_blktrans_dev()
382 	if (new->devnum > (MINORMASK >> tr->part_bits) ||  in add_mtd_blktrans_dev()
383 	    (tr->part_bits && new->devnum >= 27 * 26)) {  in add_mtd_blktrans_dev()
388 	list_add_tail(&new->list, &tr->devs);  in add_mtd_blktrans_dev()
392 	mutex_init(&new->lock);  in add_mtd_blktrans_dev()
393 	kref_init(&new->ref);  in add_mtd_blktrans_dev()
395 		new->readonly = 1;  in add_mtd_blktrans_dev()
404 	new->disk = gd;  in add_mtd_blktrans_dev()
405 	gd->private_data = new;  in add_mtd_blktrans_dev()
407 	gd->first_minor = (new->devnum) << tr->part_bits;  in add_mtd_blktrans_dev()
411 		if (new->devnum < 26)  in add_mtd_blktrans_dev()
413 				 "%s%c", tr->name, 'a' + new->devnum);  in add_mtd_blktrans_dev()
417 				 'a' - 1 + new->devnum / 26,  in add_mtd_blktrans_dev()
418 				 'a' + new->devnum % 26);  in add_mtd_blktrans_dev()
421 			 "%s%d", tr->name, new->devnum);  in add_mtd_blktrans_dev()
423 	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);  in add_mtd_blktrans_dev()
426 	spin_lock_init(&new->queue_lock);  in add_mtd_blktrans_dev()
427 	INIT_LIST_HEAD(&new->rq_list);  in add_mtd_blktrans_dev()
429 	new->tag_set = kzalloc(sizeof(*new->tag_set), GFP_KERNEL);  in add_mtd_blktrans_dev()
430 	if (!new->tag_set)  in add_mtd_blktrans_dev()
433 	new->rq = blk_mq_init_sq_queue(new->tag_set, &mtd_mq_ops, 2,  in add_mtd_blktrans_dev()
435 	if (IS_ERR(new->rq)) {  in add_mtd_blktrans_dev()
436 		ret = PTR_ERR(new->rq);  in add_mtd_blktrans_dev()
437 		new->rq = NULL;  in add_mtd_blktrans_dev()
442 		blk_queue_write_cache(new->rq, true, false);  in add_mtd_blktrans_dev()
444 	new->rq->queuedata = new;  in add_mtd_blktrans_dev()
445 	blk_queue_logical_block_size(new->rq, tr->blksize);  in add_mtd_blktrans_dev()
447 	blk_queue_flag_set(QUEUE_FLAG_NONROT, new->rq);  in add_mtd_blktrans_dev()
448 	blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, new->rq);  in add_mtd_blktrans_dev()
451 		blk_queue_flag_set(QUEUE_FLAG_DISCARD, new->rq);  in add_mtd_blktrans_dev()
452 		blk_queue_max_discard_sectors(new->rq, UINT_MAX);  in add_mtd_blktrans_dev()
455 	gd->queue = new->rq;  in add_mtd_blktrans_dev()
457 	if (new->readonly)  in add_mtd_blktrans_dev()
460 	device_add_disk(&new->mtd->dev, gd, NULL);  in add_mtd_blktrans_dev()
462 	if (new->disk_attributes) {  in add_mtd_blktrans_dev()
464 					new->disk_attributes);  in add_mtd_blktrans_dev()
469 	kfree(new->tag_set);  in add_mtd_blktrans_dev()
471 	put_disk(new->disk);  in add_mtd_blktrans_dev()
473 	list_del(&new->list);  in add_mtd_blktrans_dev()
491 	/* Stop new requests to arrive */  in del_mtd_blktrans_dev()