block: make blk_abort_queue() ignore non-request based devices

There's nothing to do for those devices, since the timeout handling is
based on requests.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index bbbdc4b8ccf2..8f570c4c80ee 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -211,6 +211,12 @@ void blk_abort_queue(struct request_queue *q)
         struct request *rq, *tmp;
         LIST_HEAD(list);
 
+        /*
+         * Not a request based block device, nothing to abort
+         */
+        if (!q->request_fn)
+                return;
+
         spin_lock_irqsave(q->queue_lock, flags);
 
         elv_abort_queue(q);