[PATCH] dm: drop unnecessary assignment of md->queue

[Bob Liu]

md->queue and q are the same thing in dm_init_request_based_queue() and
dm_init_request_based_blk_mq_queue().

Also drop the temporary struct request_queue *q.

Signed-off-by: Bob Liu <bob....@oracle.com>
---
 drivers/md/dm.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 5df4048..4f1f317 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2605,17 +2605,13 @@ static void init_rq_based_worker_thread(struct 
mapped_device *md)
  */
 static int dm_init_request_based_queue(struct mapped_device *md)
 {
-       struct request_queue *q = NULL;
-
        /* Fully initialize the queue */
-       q = blk_init_allocated_queue(md->queue, dm_request_fn, NULL);
-       if (!q)
+       if (!blk_init_allocated_queue(md->queue, dm_request_fn, NULL))
                return -EINVAL;
 
        /* disable dm_request_fn's merge heuristic by default */
        md->seq_rq_merge_deadline_usecs = 0;
 
-       md->queue = q;
        dm_init_old_md_queue(md);
        blk_queue_softirq_done(md->queue, dm_softirq_done);
        blk_queue_prep_rq(md->queue, dm_prep_fn);
@@ -2740,7 +2736,6 @@ static int dm_init_request_based_blk_mq_queue(struct 
mapped_device *md)
                err = PTR_ERR(q);
                goto out_tag_set;
        }
-       md->queue = q;
        dm_init_md_queue(md);
 
        /* backfill 'mq' sysfs registration normally done in blk_register_queue 
*/
-- 
1.7.10.4