From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24383C433EC for ; Tue, 14 Jul 2020 19:03:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DFCE22B4E for ; Tue, 14 Jul 2020 19:03:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731225AbgGNTDY (ORCPT ); Tue, 14 Jul 2020 15:03:24 -0400 Received: from smtprelay0192.hostedemail.com ([216.40.44.192]:51710 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729699AbgGNS52 (ORCPT ); Tue, 14 Jul 2020 14:57:28 -0400 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay01.hostedemail.com (Postfix) with ESMTP id 33E0E100E7B4A; Tue, 14 Jul 2020 18:57:26 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: wish68_300691626ef3 X-Filterd-Recvd-Size: 3488 Received: from XPS-9350.home (unknown [47.151.133.149]) (Authenticated sender: joe@perches.com) by omf05.hostedemail.com (Postfix) with ESMTPA; Tue, 14 Jul 2020 18:57:24 +0000 (UTC) Message-ID: Subject: Re: [PATCH 6/6] staging: qlge: qlge_ethtool: Remove one byte memset. From: Joe Perches To: Dan Carpenter , Suraj Upadhyay , Jeff Kirsher Cc: manishc@marvell.com, GR-Linux-NIC-Dev@marvell.com, gregkh@linuxfoundation.org, devel@driverdev.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Date: Tue, 14 Jul 2020 11:57:23 -0700 In-Reply-To: <20200713141749.GU2549@kadam> References: <20200713141749.GU2549@kadam> Content-Type: text/plain; charset="ISO-8859-1" User-Agent: Evolution 3.36.3-0ubuntu1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, 2020-07-13 at 17:17 +0300, Dan Carpenter wrote: > On Mon, Jul 13, 2020 at 05:52:22PM +0530, Suraj Upadhyay wrote: > > Use direct assignment instead of using memset with just one byte as an > > argument. > > Issue found by checkpatch.pl. > > > > Signed-off-by: Suraj Upadhyay > > --- > > Hii Maintainers, > > Please correct me if I am wrong here. > > --- > > > > drivers/staging/qlge/qlge_ethtool.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/staging/qlge/qlge_ethtool.c b/drivers/staging/qlge/qlge_ethtool.c > > index 16fcdefa9687..d44b2dae9213 100644 > > --- a/drivers/staging/qlge/qlge_ethtool.c > > +++ b/drivers/staging/qlge/qlge_ethtool.c > > @@ -516,8 +516,8 @@ static void ql_create_lb_frame(struct sk_buff *skb, > > memset(skb->data, 0xFF, frame_size); > > frame_size &= ~1; > > memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1); > > - memset(&skb->data[frame_size / 2 + 10], 0xBE, 1); > > - memset(&skb->data[frame_size / 2 + 12], 0xAF, 1); > > + skb->data[frame_size / 2 + 10] = (unsigned char)0xBE; > > + skb->data[frame_size / 2 + 12] = (unsigned char)0xAF; > > Remove the casting. > > I guess this is better than the original because now it looks like > ql_check_lb_frame(). It's still really weird looking though. There are several of these in the intel drivers too: drivers/net/ethernet/intel/e1000/e1000_ethtool.c: memset(&skb->data[frame_size / 2 + 10], 0xBE, 1); drivers/net/ethernet/intel/e1000/e1000_ethtool.c: memset(&skb->data[frame_size / 2 + 12], 0xAF, 1); drivers/net/ethernet/intel/e1000e/ethtool.c: memset(&skb->data[frame_size / 2 + 10], 0xBE, 1); drivers/net/ethernet/intel/e1000e/ethtool.c: memset(&skb->data[frame_size / 2 + 12], 0xAF, 1); drivers/net/ethernet/intel/igb/igb_ethtool.c: memset(&skb->data[frame_size + 10], 0xBE, 1); drivers/net/ethernet/intel/igb/igb_ethtool.c: memset(&skb->data[frame_size + 12], 0xAF, 1); drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c: memset(&skb->data[frame_size + 10], 0xBE, 1); drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c: memset(&skb->data[frame_size + 12], 0xAF, 1); drivers/staging/qlge/qlge_ethtool.c: memset(&skb->data[frame_size / 2 + 10], 0xBE, 1); drivers/staging/qlge/qlge_ethtool.c: memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);