276 int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)  in add_mtd_blktrans_dev()  argument
278 	struct mtd_blktrans_ops *tr = new->tr;  in add_mtd_blktrans_dev()
287 		if (new->devnum == -1) {  in add_mtd_blktrans_dev()
291 				new->devnum = last_devnum+1;  in add_mtd_blktrans_dev()
292 				list_add_tail(&new->list, &d->list);  in add_mtd_blktrans_dev()
295 		} else if (d->devnum == new->devnum) {  in add_mtd_blktrans_dev()
298 		} else if (d->devnum > new->devnum) {  in add_mtd_blktrans_dev()
300 			list_add_tail(&new->list, &d->list);  in add_mtd_blktrans_dev()
307 	if (new->devnum == -1)  in add_mtd_blktrans_dev()
308 		new->devnum = last_devnum+1;  in add_mtd_blktrans_dev()
313 	if (new->devnum > (MINORMASK >> tr->part_bits) ||  in add_mtd_blktrans_dev()
314 	    (tr->part_bits && new->devnum >= 27 * 26))  in add_mtd_blktrans_dev()
317 	list_add_tail(&new->list, &tr->devs);  in add_mtd_blktrans_dev()
320 	mutex_init(&new->lock);  in add_mtd_blktrans_dev()
321 	kref_init(&new->ref);  in add_mtd_blktrans_dev()
323 		new->readonly = 1;  in add_mtd_blktrans_dev()
326 	new->tag_set = kzalloc(sizeof(*new->tag_set), GFP_KERNEL);  in add_mtd_blktrans_dev()
327 	if (!new->tag_set)  in add_mtd_blktrans_dev()
330 	ret = blk_mq_alloc_sq_tag_set(new->tag_set, &mtd_mq_ops, 2,  in add_mtd_blktrans_dev()
336 	gd = blk_mq_alloc_disk(new->tag_set, new);  in add_mtd_blktrans_dev()
342 	new->disk = gd;  in add_mtd_blktrans_dev()
343 	new->rq = new->disk->queue;  in add_mtd_blktrans_dev()
344 	gd->private_data = new;  in add_mtd_blktrans_dev()
346 	gd->first_minor = (new->devnum) << tr->part_bits;  in add_mtd_blktrans_dev()
351 		if (new->devnum < 26)  in add_mtd_blktrans_dev()
353 				 "%s%c", tr->name, 'a' + new->devnum);  in add_mtd_blktrans_dev()
357 				 'a' - 1 + new->devnum / 26,  in add_mtd_blktrans_dev()
358 				 'a' + new->devnum % 26);  in add_mtd_blktrans_dev()
361 			 "%s%d", tr->name, new->devnum);  in add_mtd_blktrans_dev()
365 	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);  in add_mtd_blktrans_dev()
368 	spin_lock_init(&new->queue_lock);  in add_mtd_blktrans_dev()
369 	INIT_LIST_HEAD(&new->rq_list);  in add_mtd_blktrans_dev()
372 		blk_queue_write_cache(new->rq, true, false);  in add_mtd_blktrans_dev()
374 	blk_queue_logical_block_size(new->rq, tr->blksize);  in add_mtd_blktrans_dev()
376 	blk_queue_flag_set(QUEUE_FLAG_NONROT, new->rq);  in add_mtd_blktrans_dev()
377 	blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, new->rq);  in add_mtd_blktrans_dev()
380 		blk_queue_max_discard_sectors(new->rq, UINT_MAX);  in add_mtd_blktrans_dev()
381 		new->rq->limits.discard_granularity = tr->blksize;  in add_mtd_blktrans_dev()
384 	gd->queue = new->rq;  in add_mtd_blktrans_dev()
386 	if (new->readonly)  in add_mtd_blktrans_dev()
389 	ret = device_add_disk(&new->mtd->dev, gd, NULL);  in add_mtd_blktrans_dev()
393 	if (new->disk_attributes) {  in add_mtd_blktrans_dev()
395 					new->disk_attributes);  in add_mtd_blktrans_dev()
401 	put_disk(new->disk);  in add_mtd_blktrans_dev()
403 	blk_mq_free_tag_set(new->tag_set);  in add_mtd_blktrans_dev()
405 	kfree(new->tag_set);  in add_mtd_blktrans_dev()
407 	list_del(&new->list);  in add_mtd_blktrans_dev()