From patchwork Fri Oct 12 08:34:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 10638043 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 663D81869 for ; Fri, 12 Oct 2018 08:34:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 57E632B3D7 for ; Fri, 12 Oct 2018 08:34:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4BC5F2B574; Fri, 12 Oct 2018 08:34:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0053C2B3D7 for ; Fri, 12 Oct 2018 08:34:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727996AbeJLQFd (ORCPT ); Fri, 12 Oct 2018 12:05:33 -0400 Received: from imap1.codethink.co.uk ([176.9.8.82]:48203 "EHLO imap1.codethink.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727524AbeJLQFc (ORCPT ); Fri, 12 Oct 2018 12:05:32 -0400 Received: from [148.252.241.226] (helo=rainbowdash) by imap1.codethink.co.uk with esmtpsa (Exim 4.84_2 #1 (Debian)) id 1gAstc-0005Tc-TL; Fri, 12 Oct 2018 09:34:08 +0100 Received: from ben by rainbowdash with local (Exim 4.91) (envelope-from ) id 1gAstc-00052k-8z; Fri, 12 Oct 2018 09:34:08 +0100 From: Ben Dooks To: netdev@vger.kernel.org Cc: oneukum@suse.com, davem@davemloft.net, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kernel@lists.codethink.co.uk, Ben Dooks Subject: [PATCH 6/8] usbnet: smsc95xx: fix memcpy for accessing rx-data Date: Fri, 12 Oct 2018 09:34:03 +0100 Message-Id: <20181012083405.19246-7-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181012083405.19246-1-ben.dooks@codethink.co.uk> References: <20181012083405.19246-1-ben.dooks@codethink.co.uk> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Change the RX code to use get_unaligned_le32() instead of the combo of memcpy and cpu_to_le32s(&var). Signed-off-by: Ben Dooks --- drivers/net/usb/smsc95xx.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 8ce190da8be0..03c3c02b569c 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -618,9 +618,7 @@ static void smsc95xx_status(struct usbnet *dev, struct urb *urb) return; } - memcpy(&intdata, urb->transfer_buffer, 4); - le32_to_cpus(&intdata); - + intdata = get_unaligned_le32(urb->transfer_buffer); netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); if (intdata & INT_ENP_PHY_INT_) @@ -1922,8 +1920,7 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) unsigned char *packet; u16 size; - memcpy(&header, skb->data, sizeof(header)); - le32_to_cpus(&header); + header = get_unaligned_le32(skb->data); skb_pull(skb, 4 + NET_IP_ALIGN); packet = skb->data;