linux-kernel - [PATCH 2/7] net/9p/trans_fd.c: remove unused variable

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Message-ID: <Pine.LNX.4.64.0803151702380.24178@ask.diku.dk>
Date:	Sat, 15 Mar 2008 17:02:58 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	ericvh@...il.com, rminnich@...dia.gov, lucho@...kov.net,
	v9fs-developer@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH 2/7] net/9p/trans_fd.c: remove unused variable

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

The variable cb 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/9p/trans_fd.c |    2 --
 1 file changed, 2 deletions(-)

diff -u -p a/net/9p/trans_fd.c b/net/9p/trans_fd.c
--- a/net/9p/trans_fd.c 2008-03-12 14:13:15.000000000 +0100
+++ b/net/9p/trans_fd.c 2008-03-15 07:27:23.000000000 +0100
@@ -861,7 +861,6 @@ static void p9_mux_free_request(struct p
 
 static void p9_mux_flush_cb(struct p9_req *freq, void *a)
 {
-	p9_conn_req_callback cb;
 	int tag;
 	struct p9_conn *m;
 	struct p9_req *req, *rreq, *rptr;
@@ -872,7 +871,6 @@ static void p9_mux_flush_cb(struct p9_re
 		freq->tcall->params.tflush.oldtag);
 
 	spin_lock(&m->lock);
-	cb = NULL;
 	tag = freq->tcall->params.tflush.oldtag;
 	req = NULL;
 	list_for_each_entry_safe(rreq, rptr, &m->req_list, req_list) {
--
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