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

Wei Yongjun · gregkh · commit 89bb957ec8b0 · 2012-09-05T16:58:30.000-07:00
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
@@ -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;
 
