[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] xen/9pfs: initialize len to 0 to detect xenbus_read errors
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 <stefano@xxxxxxxxxxx> CC: dan.carpenter@xxxxxxxxxx CC: jgross@xxxxxxxx CC: boris.ostrovsky@xxxxxxxxxx CC: Eric Van Hensbergen <ericvh@xxxxxxxxx> CC: Ron Minnich <rminnich@xxxxxxxxxx> CC: Latchesar Ionkov <lucho@xxxxxxxxxx> CC: v9fs-developer@xxxxxxxxxxxxxxxxxxxxx --- 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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