[PATCH 1/2] mmc: remove an extra blk_{get,put}_queue pair

[Christoph Hellwig <hch@lst.de>]

The gendisk already acquires a reference to the queue when add_disk
is called, which dropped on put_disk.  So remove the superflous
extra refcounting.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/mmc/core/block.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 689eb9afeeed..947624e76c33 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -201,7 +201,7 @@ static void mmc_blk_put(struct mmc_blk_data *md)
 	md->usage--;
 	if (md->usage == 0) {
 		int devidx = mmc_get_devidx(md->disk);
-		blk_put_queue(md->queue.queue);
+
 		ida_simple_remove(&mmc_blk_ida, devidx);
 		put_disk(md->disk);
 		kfree(md);
@@ -2326,18 +2326,6 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
 
 	md->queue.blkdata = md;
 
-	/*
-	 * Keep an extra reference to the queue so that we can shutdown the
-	 * queue (i.e. call blk_cleanup_queue()) while there are still
-	 * references to the 'md'. The corresponding blk_put_queue() is in
-	 * mmc_blk_put().
-	 */
-	if (!blk_get_queue(md->queue.queue)) {
-		mmc_cleanup_queue(&md->queue);
-		ret = -ENODEV;
-		goto err_putdisk;
-	}
-
 	md->disk->major	= MMC_BLOCK_MAJOR;
 	md->disk->first_minor = devidx * perdev_minors;
 	md->disk->fops = &mmc_bdops;
-- 
2.30.2