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>
qemu · Feb 21, 2014 · e6dc8a1 · e6dc8a1
1 parent a71835a
commit e6dc8a1
Showing 1 changed file with 1 addition and 5 deletions.
diff --git 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) {