[ATALK]: In notifier handlers convert the void pointer to a netdevice

This slightly improves code safety and clarity.

Later network namespace patches touch this code so this is a
preliminary cleanup.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index fbdfb1224ae..594b5973954 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -647,9 +647,11 @@ static inline void atalk_dev_down(struct net_device *dev)
 static int ddp_device_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
 {
+        struct net_device *dev = ptr;
+
         if (event == NETDEV_DOWN)
                 /* Discard any use of this */
-                atalk_dev_down(ptr);
+                atalk_dev_down(dev);
 
         return NOTIFY_DONE;
 }