diff --git a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_client.c b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_client.c index 869ce26906..b28cc76c48 100644 --- a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_client.c +++ b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_client.c @@ -97,14 +97,17 @@ int xenbus_switch_state(struct xenbus_device *dev, /* We check whether the state is currently set to the given value, and if not, then the state is set. We don't want to unconditionally write the given state, because we don't want to fire watches - unnecessarily. + unnecessarily. Furthermore, if the node has gone, we don't write + to it, as the device will be tearing down, and we don't want to + resurrect that directory. */ int current_state; int err = xenbus_scanf(xbt, dev->nodename, "state", "%d", ¤t_state); - if (err == 1 && (XenbusState)current_state == state) + if ((err == 1 && (XenbusState)current_state == state) || + err == -ENOENT) return 0; err = xenbus_printf(xbt, dev->nodename, "state", "%d", state);