From patchwork Sat May 15 21:23:15 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 52735 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 00DBCB7DED for ; Sun, 16 May 2010 07:24:43 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756646Ab0EOVX0 (ORCPT ); Sat, 15 May 2010 17:23:26 -0400 Received: from mgw2.diku.dk ([130.225.96.92]:35479 "EHLO mgw2.diku.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756465Ab0EOVXU (ORCPT ); Sat, 15 May 2010 17:23:20 -0400 Received: from localhost (localhost [127.0.0.1]) by mgw2.diku.dk (Postfix) with ESMTP id 8B85D19BB80; Sat, 15 May 2010 23:23:19 +0200 (CEST) Received: from mgw2.diku.dk ([127.0.0.1]) by localhost (mgw2.diku.dk [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 07683-08; Sat, 15 May 2010 23:23:15 +0200 (CEST) Received: from nhugin.diku.dk (nhugin.diku.dk [130.225.96.140]) by mgw2.diku.dk (Postfix) with ESMTP id 7D2A319BB6D; Sat, 15 May 2010 23:23:15 +0200 (CEST) Received: from ask.diku.dk (ask.diku.dk [130.225.96.225]) by nhugin.diku.dk (Postfix) with ESMTP id 01ED86DFD17; Sat, 15 May 2010 23:16:03 +0200 (CEST) Received: by ask.diku.dk (Postfix, from userid 3767) id 43381200BE; Sat, 15 May 2010 23:23:15 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by ask.diku.dk (Postfix) with ESMTP id 3CC6C200BC; Sat, 15 May 2010 23:23:15 +0200 (CEST) Date: Sat, 15 May 2010 23:23:15 +0200 (CEST) From: Julia Lawall To: Peter Korsgaard , Greg Kroah-Hartman , netdev@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH 33/37] drivers/net/usb: Use kmemdup Message-ID: MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Julia Lawall Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // Signed-off-by: Julia Lawall --- drivers/net/usb/dm9601.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff -u -p a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c --- a/drivers/net/usb/dm9601.c +++ b/drivers/net/usb/dm9601.c @@ -93,10 +93,9 @@ static int dm_write(struct usbnet *dev, netdev_dbg(dev->net, "dm_write() reg=0x%02x, length=%d\n", reg, length); if (data) { - buf = kmalloc(length, GFP_KERNEL); + buf = kmemdup(data, length, GFP_KERNEL); if (!buf) goto out; - memcpy(buf, data, length); } err = usb_control_msg(dev->udev,