From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932459AbaLDO7c (ORCPT ); Thu, 4 Dec 2014 09:59:32 -0500 Received: from mout.kundenserver.de ([212.227.17.10]:51014 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932173AbaLDO7b convert rfc822-to-8bit (ORCPT ); Thu, 4 Dec 2014 09:59:31 -0500 From: Arnd Bergmann To: "Lad, Prabhakar" Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: Re: [PATCH] misc: suppress build warning Date: Thu, 04 Dec 2014 15:59:28 +0100 Message-ID: <12630889.EI0exeDoNc@wuerfel> User-Agent: KMail/4.11.5 (Linux/3.16.0-10-generic; KDE/4.11.5; x86_64; ; ) In-Reply-To: <1417703910-2474-1-git-send-email-prabhakar.csengg@gmail.com> References: <1417703910-2474-1-git-send-email-prabhakar.csengg@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="utf-8" X-Provags-ID: V03:K0:IzMPB1gkN35IV+f7zaUoWNsPwPeTFkwCkvgRDn4Q044vUYoSpnh 5XC+n2tl6wkvahUvdyawecxT0NyHBaI8lGHz33errpSxUZSHJgXCnNI6N8dwUcdm3s5SYgs bKR23R3Yli7b7FKKzz33QNjw9bOYJPL9H6hF77bNgae063IbR8BnnAY779VmJS5fusJti4O TDHEjpcp7qst+RdGURT6g== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 04 December 2014 14:38:30 Lad, Prabhakar wrote: > this patch fixes following build warning: > > drivers/misc/ioc4.c: In function ‘ioc4_probe’: > drivers/misc/ioc4.c:194:16: warning: ‘start’ may be used uninitialized in this function [-Wmaybe-uninitialized] > period = (end - start) / > ^ > drivers/misc/ioc4.c:148:11: note: ‘start’ was declared here > uint64_t start, end, period; > > Signed-off-by: Lad, Prabhakar Please explain why the compiler thinks there is a bug, why you are sure that there isn't, and why you picked '0' as the initialization value. Arnd