From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] mvpp2: use correct size for memset Date: Fri, 25 Nov 2016 20:57:35 -0500 (EST) Message-ID: <20161125.205735.849551572881291744.davem@davemloft.net> References: <20161124162843.3849988-1-arnd@arndb.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jszhang@marvell.com, mw@semihalf.com, tremyfr@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: arnd@arndb.de Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:58996 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752478AbcKZB5h (ORCPT ); Fri, 25 Nov 2016 20:57:37 -0500 In-Reply-To: <20161124162843.3849988-1-arnd@arndb.de> Sender: netdev-owner@vger.kernel.org List-ID: From: Arnd Bergmann Date: Thu, 24 Nov 2016 17:28:12 +0100 > gcc-7 detects a short memset in mvpp2, introduced in the original > merge of the driver: > > drivers/net/ethernet/marvell/mvpp2.c: In function 'mvpp2_cls_init': > drivers/net/ethernet/marvell/mvpp2.c:3296:2: error: 'memset' used with length equal to number of elements without multiplication by element size [-Werror=memset-elt-size] > > The result seems to be that we write uninitialized data into the > flow table registers, although we did not get any warning about > that uninitialized data usage. > > Using sizeof() lets us initialize then entire array instead. > > Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit") > Signed-off-by: Arnd Bergmann Applied, thanks.