linux-kernel - [PATCH 3/7] net/ipv6/ndisc.c: remove unused variable

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Date:	Sat, 15 Mar 2008 17:03:20 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	davem@...emloft.net, pekkas@...core.fi, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 3/7] net/ipv6/ndisc.c: remove unused variable

From: Julia Lawall <julia@...u.dk>

The variable hlen is initialized but never used otherwise.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
identifier i;
constant C;
@@

(
extern T i;
|
- T i;
  <+... when != i
- i = C;
  ...+>
)
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>
---
 net/ipv6/ndisc.c |    2 --
 1 file changed, 2 deletions(-)

diff -u -p a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
--- a/net/ipv6/ndisc.c 2008-03-12 14:13:15.000000000 +0100
+++ b/net/ipv6/ndisc.c 2008-03-15 07:30:11.000000000 +0100
@@ -1420,7 +1420,6 @@ void ndisc_send_redirect(struct sk_buff 
 	u8 *opt;
 	int rd_len;
 	int err;
-	int hlen;
 	u8 ha_buf[MAX_ADDR_LEN], *ha = NULL;
 
 	dev = skb->dev;
@@ -1491,7 +1490,6 @@ void ndisc_send_redirect(struct sk_buff 
 		return;
 	}
 
-	hlen = 0;
 
 	skb_reserve(buff, LL_RESERVED_SPACE(dev));
 	ip6_nd_hdr(sk, buff, dev, &saddr_buf, &ipv6_hdr(skb)->saddr,
--
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