block: Fix elv_support_iosched()

[linux-2.6-microblaze.git] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index 5437059..076ba73 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -616,7 +616,8 @@ out:
 
 static inline bool elv_support_iosched(struct request_queue *q)
 {
-       if (q->tag_set && (q->tag_set->flags & BLK_MQ_F_NO_SCHED))
+       if (!q->mq_ops ||
+           (q->tag_set && (q->tag_set->flags & BLK_MQ_F_NO_SCHED)))
                return false;
        return true;
 }