[BLKTAP] remove spurious error message

Signed-off-by: Jake Wires <jwires@xensource.com>

diff --git a/linux-2.6-xen-sparse/drivers/xen/blktap/xenbus.c b/linux-2.6-xen-sparse/drivers/xen/blktap/xenbus.c
index 1b4bda2184ab5317bd4c3cf0fd4edfd77c701c00..5fa4c31a9bc7cf0b6f27410934b6d19c9e2940d5 100644 (file)
--- a/linux-2.6-xen-sparse/drivers/xen/blktap/xenbus.c
+++ b/linux-2.6-xen-sparse/drivers/xen/blktap/xenbus.c
@@ -299,7 +299,9 @@ static void tap_backend_changed(struct xenbus_watch *watch,
         * and disk info to xenstore
         */
        err = xenbus_gather(XBT_NIL, dev->nodename, "info", "%lu", &info, 
-                           NULL);      
+                           NULL);
+       if (XENBUS_EXIST_ERR(err))
+               return;
        if (err) {
                xenbus_dev_error(dev, err, "getting info");
                return;