commit f9018ac9308ea415e659cfbdda040504ef92597b
author Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com> Mon Mar 30 13:19:14 2015 +0800
committer Jens Axboe <axboe@fb.com> Mon Mar 30 09:04:27 2015 -0600
tree 291929592e7fcbc757d94138728249eb48ab8169
parent 271508dba2c3fc307e7c44e2731a2ece70a4025e

block: remove redundant check about 'set->nr_hw_queues' in blk_mq_alloc_tag_set()

At the beginning of blk_mq_alloc_tag_set(), we have already checked whether
'set->nr_hw_queues' is zero, so here remove this redundant check.

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

block/blk-mq.c

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 59fa239..37f1436 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2174,7 +2174,7 @@
 	if (set->queue_depth < set->reserved_tags + BLK_MQ_TAG_MIN)
 		return -EINVAL;
 
-	if (!set->nr_hw_queues || !set->ops->queue_rq || !set->ops->map_queue)
+	if (!set->ops->queue_rq || !set->ops->map_queue)
 		return -EINVAL;
 
 	if (set->queue_depth > BLK_MQ_MAX_DEPTH) {