driver: ipvlan: Free ipvl_port directly with kfree instead of kfree_rcu

There are two functions which would free the ipvl_port now. The first
is ipvlan_port_create. It frees the ipvl_port in the error handler,
so it could kfree it directly. The second is ipvlan_port_destroy. It
invokes netdev_rx_handler_unregister which enforces one grace period
by synchronize_net firstly, so it also could kfree the ipvl_port
directly and safely.

So it is unnecessary to use kfree_rcu to free ipvl_port.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 5430460167b5..ffe8994e64fc 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -128,7 +128,7 @@ static int ipvlan_port_create(struct net_device *dev)
         return 0;
 
 err:
-        kfree_rcu(port, rcu);
+        kfree(port);
         return err;
 }
 
@@ -145,7 +145,7 @@ static void ipvlan_port_destroy(struct net_device *dev)
         netdev_rx_handler_unregister(dev);
         cancel_work_sync(&port->wq);
         __skb_queue_purge(&port->backlog);
-        kfree_rcu(port, rcu);
+        kfree(port);
 }
 
 #define IPVLAN_FEATURES \