[PATCH 4/4] vti6: delete unneeded call to netdev_priv

[PATCH 4/4] vti6: delete unneeded call to netdev_priv

[Julia Lawall]

From: Julia Lawall <Julia.Lawall@lip6.fr>

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>

---
 net/ipv6/ip6_vti.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 6cc9f93..9aaa6bb 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -795,15 +795,12 @@ static const struct net_device_ops vti6_netdev_ops = {
  **/
 static void vti6_dev_setup(struct net_device *dev)
 {
-	struct ip6_tnl *t;
-
 	dev->netdev_ops = &vti6_netdev_ops;
 	dev->destructor = vti6_dev_free;
 
 	dev->type = ARPHRD_TUNNEL6;
 	dev->hard_header_len = LL_MAX_HEADER + sizeof(struct ipv6hdr);
 	dev->mtu = ETH_DATA_LEN;
-	t = netdev_priv(dev);
 	dev->flags |= IFF_NOARP;
 	dev->addr_len = sizeof(struct in6_addr);
 	dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;

Re: [PATCH 4/4] vti6: delete unneeded call to netdev_priv

[David Miller]

From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Thu, 15 May 2014 05:43:21 +0200

> From: Julia Lawall <Julia.Lawall@lip6.fr>
> 
> 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>

Applied.