From: Michael S. Tsirkin <mst@redhat.com>
Date: Wed, 3 Aug 2016 04:18:51 +0000 (+0300)
Subject: virtio: fix error handling for debug builds
X-Git-Tag: v4.14-rc1~2628^2~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3cc36f6e34bd2d92d23be7b598ba5e639c47b01a;p=platform%2Fkernel%2Flinux-rpi.git

virtio: fix error handling for debug builds

On error, virtqueue_add calls START_USE but not
END_USE. Thankfully that's normally empty anyway,
but might not be when debugging. Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5ed228d..e383ecd 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -428,6 +428,7 @@ unmap_release:
 	if (indirect)
 		kfree(desc);
 
+	END_USE(vq);
 	return -EIO;
 }