In order to use "len" to check for xenbus_read errors properly, we need
to initialize len to 0 before passing it to xenbus_read.
Signed-off-by: Stefano Stabellini <stef...@aporeto.com>
CC: dan.carpen...@oracle.com
CC: jgr...@suse.com
CC: boris.ostrov...@oracle.com
CC: Eric Van Hensbergen <eri...@gmail.com>
CC: Ron Minnich <rminn...@sandia.gov>
CC: Latchesar Ionkov <lu...@ionkov.net>
CC: v9fs-develo...@lists.sourceforge.net
---
Juergen, you could also merge this patch into commit
e9c53da56ff36458b1b8df95573f5dac80a1a956
---
---
net/9p/trans_xen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c
index 4786424..71e8564 100644
--- a/net/9p/trans_xen.c
+++ b/net/9p/trans_xen.c
@@ -386,7 +386,7 @@ static int xen_9pfs_front_probe(struct xenbus_device *dev,
struct xenbus_transaction xbt;
struct xen_9pfs_front_priv *priv = NULL;
char *versions;
- unsigned int max_rings, max_ring_order, len;
+ unsigned int max_rings, max_ring_order, len = 0;
versions = xenbus_read(XBT_NIL, dev->otherend, "versions", &len);
if (!len)
--
1.9.1
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