Phonet: handle rtnetlink registration failure
Signed-off-by: RĂ©mi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/phonet/pn_dev.h b/include/net/phonet/pn_dev.h
index 59ae628..4ba2aed 100644
--- a/include/net/phonet/pn_dev.h
+++ b/include/net/phonet/pn_dev.h
@@ -38,7 +38,7 @@
int phonet_device_init(void);
void phonet_device_exit(void);
-void phonet_netlink_register(void);
+int phonet_netlink_register(void);
struct net_device *phonet_device_get(struct net *net);
int phonet_address_add(struct net_device *dev, u8 addr);
diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index af49db0..fd41810 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -190,9 +190,13 @@
/* Initialize Phonet devices list */
int __init phonet_device_init(void)
{
+ int err;
+
register_netdevice_notifier(&phonet_device_notifier);
- phonet_netlink_register();
- return 0;
+ err = phonet_netlink_register();
+ if (err)
+ phonet_device_exit();
+ return err;
}
void phonet_device_exit(void)
diff --git a/net/phonet/pn_netlink.c b/net/phonet/pn_netlink.c
index 242fe8f..918a4f0 100644
--- a/net/phonet/pn_netlink.c
+++ b/net/phonet/pn_netlink.c
@@ -160,9 +160,14 @@
return skb->len;
}
-void __init phonet_netlink_register(void)
+int __init phonet_netlink_register(void)
{
- rtnl_register(PF_PHONET, RTM_NEWADDR, addr_doit, NULL);
- rtnl_register(PF_PHONET, RTM_DELADDR, addr_doit, NULL);
- rtnl_register(PF_PHONET, RTM_GETADDR, NULL, getaddr_dumpit);
+ int err = __rtnl_register(PF_PHONET, RTM_NEWADDR, addr_doit, NULL);
+ if (err)
+ return err;
+
+ /* Further __rtnl_register() cannot fail */
+ __rtnl_register(PF_PHONET, RTM_DELADDR, addr_doit, NULL);
+ __rtnl_register(PF_PHONET, RTM_GETADDR, NULL, getaddr_dumpit);
+ return 0;
}