From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Mon, 27 Aug 2012 07:07:17 +0000 (+0800)
Subject: USB: cp210x: remove useless set memory to zero use memset()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=89bb957ec8b054ea9994974f03848cb2f129f50c;p=openwrt%2Fstaging%2Fblogic.git

USB: cp210x: remove useless set memory to zero use memset()

The memory return by kzalloc() or kmem_cache_zalloc() has already
be set to zero, so remove useless memset(0).

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 1e71079ce33b..3f86cf3735a7 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -865,7 +865,6 @@ static int cp210x_startup(struct usb_serial *serial)
 		if (!port_priv)
 			return -ENOMEM;
 
-		memset(port_priv, 0x00, sizeof(*port_priv));
 		port_priv->bInterfaceNumber =
 		    serial->interface->cur_altsetting->desc.bInterfaceNumber;