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 <[email protected]> CC: [email protected] CC: [email protected] CC: [email protected] CC: Eric Van Hensbergen <[email protected]> CC: Ron Minnich <[email protected]> CC: Latchesar Ionkov <[email protected]> CC: [email protected] --- 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
