Netdev_priv is an accessor function, and has no purpose if its result is
not used.
A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@ local idexpression x; @@
-x = netdev_priv(...);
... when != x
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
                                          struct ip_tunnel_net *itn,
                                          struct ip_tunnel_parm *parms)
 {
-       struct ip_tunnel *nt, *fbt;
+       struct ip_tunnel *nt;
        struct net_device *dev;
 
        BUG_ON(!itn->fb_tunnel_dev);
-       fbt = netdev_priv(itn->fb_tunnel_dev);
        dev = __ip_tunnel_create(net, itn->fb_tunnel_dev->rtnl_link_ops, parms);
        if (IS_ERR(dev))
                return ERR_CAST(dev);