[IPV6] MROUTE: Do not call ipv6_find_idev() directly.

Since NETDEV_REGISTER notifier chain is responsible for creating
inet6_dev{}, we do not need to call ipv6_find_idev() directly here.
Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/mroute6.h

@@ -117,9 +117,6 @@ struct sioc_mif_req6
 
 #include <linux/skbuff.h>	/* for struct sk_buff_head */
 
-struct net_device;
-struct inet6_dev *ipv6_find_idev(struct net_device *dev);
-
 #ifdef CONFIG_IPV6_MROUTE
 static inline int ip6_mroute_opt(int opt)
 {

net/ipv6/addrconf.c

@@ -412,7 +412,7 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
 	return ndev;
 }
 
-struct inet6_dev * ipv6_find_idev(struct net_device *dev)
+static struct inet6_dev * ipv6_find_idev(struct net_device *dev)
 {
 	struct inet6_dev *idev;
 

net/ipv6/ip6mr.c

@@ -435,7 +435,6 @@ static void reg_vif_setup(struct net_device *dev)
 static struct net_device *ip6mr_reg_vif(void)
 {
 	struct net_device *dev;
-	struct inet6_dev *in_dev;
 
 	dev = alloc_netdev(sizeof(struct net_device_stats), "pim6reg",
 			   reg_vif_setup);
@@ -449,10 +448,6 @@ static struct net_device *ip6mr_reg_vif(void)
 	}
 	dev->iflink = 0;
 
-	in_dev = ipv6_find_idev(dev);
-	if (!in_dev)
-		goto failure;
-
 	if (dev_open(dev))
 		goto failure;