author: Linus Torvalds <torvalds@linux-foundation.org> 2016-10-24 19:52:24 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2016-10-24 19:52:24 -0700
commit: aa34e07e457ed13b44d680b5b605e3e5a585f611
parent: 0d7317598214134d73da59990b846481a9527a00
Commit Summary:
Diffstat:
2 files changed, 5 insertions, 3 deletions
diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index c1010f018bd8..1e8be12ebb55 100644
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -364,7 +364,7 @@ out:
static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
{
- struct watch_adapter *watch, *tmp_watch;
+ struct watch_adapter *watch;
char *path, *token;
int err, rc;
LIST_HEAD(staging_q);
@@ -399,7 +399,7 @@ static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
}
list_add(&watch->list, &u->watches);
} else {
- list_for_each_entry_safe(watch, tmp_watch, &u->watches, list) {
+ list_for_each_entry(watch, &u->watches, list) {
if (!strcmp(watch->token, token) &&
!strcmp(watch->watch.node, path)) {
unregister_xenbus_watch(&watch->watch);
diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c
index 611a23119675..6d40a972ffb2 100644
--- a/drivers/xen/xenbus/xenbus_probe_frontend.c
+++ b/drivers/xen/xenbus/xenbus_probe_frontend.c
@@ -335,7 +335,9 @@ static int backend_state;
static void xenbus_reset_backend_state_changed(struct xenbus_watch *w,
const char **v, unsigned int l)
{
- xenbus_scanf(XBT_NIL, v[XS_WATCH_PATH], "", "%i", &backend_state);
+ if (xenbus_scanf(XBT_NIL, v[XS_WATCH_PATH], "", "%i",
+ &backend_state) != 1)
+ backend_state = XenbusStateUnknown;
printk(KERN_DEBUG "XENBUS: backend %s %s\n",
v[XS_WATCH_PATH], xenbus_strstate(backend_state));
wake_up(&backend_state_wq);