Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/memstick/core/ms_block.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index 0bacf4268f83..dac258d12aca 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -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);
--
2.30.2
--
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