1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index ef8a5c20236a..60e4ca01ccbb 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -45,10 +45,9 @@ struct macvlan_port {
         struct sk_buff_head     bc_queue;
         struct work_struct      bc_work;
         bool                    passthru;
+        int                     count;
 };
 
-#define MACVLAN_PORT_IS_EMPTY(port)    list_empty(&port->vlans)
-
 struct macvlan_skb_cb {
         const struct macvlan_dev *src;
 };
@@ -667,7 +666,8 @@ static void macvlan_uninit(struct net_device *dev)
 
         free_percpu(vlan->pcpu_stats);
 
-        if (MACVLAN_PORT_IS_EMPTY(port))
+        port->count -= 1;
+        if (!port->count)
                 macvlan_port_destroy(port->dev);
 }
 
@@ -1020,12 +1020,13 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
                 vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]);
 
         if (vlan->mode == MACVLAN_MODE_PASSTHRU) {
-                if (!MACVLAN_PORT_IS_EMPTY(port))
+                if (port->count)
                         return -EINVAL;
                 port->passthru = true;
                 eth_hw_addr_inherit(dev, lowerdev);
         }
 
+        port->count += 1;
         err = register_netdevice(dev);
         if (err < 0)
                 goto destroy_port;
@@ -1043,7 +1044,8 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
 unregister_netdev:
         unregister_netdevice(dev);
 destroy_port:
-        if (MACVLAN_PORT_IS_EMPTY(port))
+        port->count -= 1;
+        if (!port->count)
                 macvlan_port_destroy(lowerdev);
 
         return err;