[PATCH 4/5] drivers/staging/otus: drop redundant memset

From: Julia Lawall
Date: Tue Mar 09 2010 - 16:15:11 EST


From: Julia Lawall <julia@xxxxxxx>

The region set by the call to memset is immediately overwritten by the
subsequent call to memcpy.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e1,e2,e3,e4;
@@

- memset(e1,e2,e3);
memcpy(e1,e4,e3);
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/staging/otus/wwrap.c | 1 -
1 file changed, 1 deletion(-)

diff -u -p a/drivers/staging/otus/wwrap.c b/drivers/staging/otus/wwrap.c
--- a/drivers/staging/otus/wwrap.c
+++ b/drivers/staging/otus/wwrap.c
@@ -955,7 +955,6 @@ int zfLnxCencSendMsg(struct sock *netlin
/*ÌîдÊý¾Ý±¨Ïà¹ØÐÅÏ¢*/
nlh = NLMSG_PUT(skb, 0, 0, WAI_K_MSG, size-sizeof(*nlh));
pos = NLMSG_DATA(nlh);
- memset(pos, 0, len);

/*´«Êäµ½Óû§¿Õ¼äµÄÊý¾Ý*/
memcpy(pos, msg, len);