Merge tag 'renesas-defconfig-fixes-for-v3.19' of git://git.kernel.org/pub/scm/linux...

[firefly-linux-kernel-4.4.55.git] / block / blk-mq.c

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 1d016fc9a8b640c54ce7e06e9f1ce1f293b694e6..92ceef0d2ab932a58526f721dec08811a310613e 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2049,6 +2049,8 @@ static int blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set)
  */
 int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set)
 {
+       BUILD_BUG_ON(BLK_MQ_MAX_DEPTH > 1 << BLK_MQ_UNIQUE_TAG_BITS);
+
        if (!set->nr_hw_queues)
                return -EINVAL;
        if (!set->queue_depth)