vlan: allow to change type when no vlan device is hooked on netdev

[cascardo/linux.git] / net / 8021q / vlan.c

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 9096bcb..ee07072 100644 (file)
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -463,7 +463,9 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 
        case NETDEV_PRE_TYPE_CHANGE:
                /* Forbid underlaying device to change its type. */
-               return NOTIFY_BAD;
+               if (vlan_uses_dev(dev))
+                       return NOTIFY_BAD;
+               break;
 
        case NETDEV_NOTIFY_PEERS:
        case NETDEV_BONDING_FAILOVER: