From e6dc8a1f83835054fcaf1dcb41af7c868688c068 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Tue, 4 Feb 2014 11:45:31 +0100
Subject: [PATCH] block: Fix bdrv_is_first_non_filter()

Consider top level BlockDriverStates as well.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Tested-by: Benoit Canet <benoit@irqsave.net>
---
 block.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/block.c b/block.c
index 6f4bacaa58..034e1ab04d 100644
--- a/block.c
+++ b/block.c
@@ -5416,11 +5416,7 @@ bool bdrv_is_first_non_filter(BlockDriverState *candidate)
     QTAILQ_FOREACH(bs, &bdrv_states, device_list) {
         bool perm;
 
-        if (!bs->file) {
-            continue;
-        }
-
-        perm = bdrv_recurse_is_first_non_filter(bs->file, candidate);
+        perm = bdrv_recurse_is_first_non_filter(bs, candidate);
 
         /* candidate is the first non filter */
         if (perm) {
-- 
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