diff options
| -rw-r--r-- | net/8021q/vlan.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 3948949a609..458031bfff5 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -364,6 +364,14 @@ static void vlan_transfer_operstate(const struct net_device *dev, struct net_dev } } +/* + * vlan network devices have devices nesting below it, and are a special + * "super class" of normal network devices; split their locks off into a + * separate class since they always nest. + */ +static struct lock_class_key vlan_netdev_xmit_lock_key; + + /* Attach a VLAN device to a mac address (ie Ethernet Card). * Returns the device that was created, or NULL if there was * an error of some kind. @@ -460,6 +468,7 @@ static struct net_device *register_vlan_device(const char *eth_IF_name, new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, vlan_setup); + if (new_dev == NULL) goto out_unlock; @@ -518,6 +527,8 @@ static struct net_device *register_vlan_device(const char *eth_IF_name, if (register_netdevice(new_dev)) goto out_free_newdev; + lockdep_set_class(&new_dev->_xmit_lock, &vlan_netdev_xmit_lock_key); + new_dev->iflink = real_dev->ifindex; vlan_transfer_operstate(real_dev, new_dev); linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */ |