From 8cced121436a3298e5866dbfaec91cd475ad59cf Mon Sep 17 00:00:00 2001
From: "Gonglei (Arei)" <arei.gonglei@huawei.com>
Date: Mon, 28 Jul 2014 06:03:45 +0000
Subject: xen_disk:  fix possible null-ptr dereference

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 hw/block/xen_disk.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c
index aed5b5b3e9..a221d0bfca 100644
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@@ -589,6 +589,7 @@ static int blk_send_response_one(struct ioreq *ioreq)
         break;
     default:
         dst = NULL;
+        return 0;
     }
     memcpy(dst, &resp, sizeof(resp));
     blkdev->rings.common.rsp_prod_pvt++;
-- 
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