commit ffef1630187bd6ed8521a90d8dfcd27bd8c8cf36
author Omar Sandoval <osandov@fb.com> Mon Nov 14 14:56:17 2016 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Fri Jan 06 11:16:14 2017 +0100
tree ab7db5390ce4f3cb39009782c0e9e29c40450f45
parent 011ded975e347d6ef14f7d08018f3d4750483160

loop: return proper error from loop_queue_rq()

commit b4a567e8114327518c09f5632339a5954ab975a3 upstream.

->queue_rq() should return one of the BLK_MQ_RQ_QUEUE_* constants, not
an errno.

Fixes: f4aa4c7bbac6 ("block: loop: convert to per-device workqueue")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/block/loop.c

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 80cf8ad..ab0b2dd 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1657,7 +1657,7 @@
 	blk_mq_start_request(bd->rq);
 
 	if (lo->lo_state != Lo_bound)
-		return -EIO;
+		return BLK_MQ_RQ_QUEUE_ERROR;
 
 	if (lo->use_dio && !(cmd->rq->cmd_flags & (REQ_FLUSH |
 					REQ_DISCARD)))