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ms_block: use blk_mq_alloc_disk

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Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:22 +03:00 committed by Jens Axboe
parent c684b57796
commit f368b7d7fa
1 changed files with 10 additions and 15 deletions
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25
drivers/memstick/core/ms_block.c
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@ -2110,21 +2110,17 @@ static int msb_init_disk(struct memstick_dev *card)
if (msb->disk_id < 0)
return msb->disk_id;
msb->disk = alloc_disk(0);
if (!msb->disk) {
rc = -ENOMEM;
rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &msb_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
if (rc)
goto out_release_id;
}
msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &msb_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(msb->queue)) {
rc = PTR_ERR(msb->queue);
msb->queue = NULL;
goto out_put_disk;
msb->disk = blk_mq_alloc_disk(&msb->tag_set, card);
if (IS_ERR(msb->disk)) {
rc = PTR_ERR(msb->disk);
goto out_free_tag_set;
}
msb->queue->queuedata = card;
msb->queue = msb->disk->queue;
blk_queue_max_hw_sectors(msb->queue, MS_BLOCK_MAX_PAGES);
blk_queue_max_segments(msb->queue, MS_BLOCK_MAX_SEGS);
@ -2135,7 +2131,6 @@ static int msb_init_disk(struct memstick_dev *card)
sprintf(msb->disk->disk_name, "msblk%d", msb->disk_id);
msb->disk->fops = &msb_bdops;
msb->disk->private_data = msb;
msb->disk->queue = msb->queue;
capacity = msb->pages_in_block * msb->logical_block_count;
capacity *= (msb->page_size / 512);
@ -2155,8 +2150,8 @@ static int msb_init_disk(struct memstick_dev *card)
dbg("Disk added");
return 0;
out_put_disk:
put_disk(msb->disk);
out_free_tag_set:
blk_mq_free_tag_set(&msb->tag_set);
out_release_id:
mutex_lock(&msb_disk_lock);
idr_remove(&msb_disk_idr, msb->disk_id);