From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759796AbZASLqx (ORCPT ); Mon, 19 Jan 2009 06:46:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758385AbZASLqm (ORCPT ); Mon, 19 Jan 2009 06:46:42 -0500 Received: from smtp.cs.aau.dk ([130.225.194.6]:41371 "EHLO smtp.cs.aau.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758231AbZASLql (ORCPT ); Mon, 19 Jan 2009 06:46:41 -0500 Subject: Re: how to fix nand driver build breakage From: Simon Holm =?ISO-8859-1?Q?Th=F8gersen?= To: KOSAKI Motohiro Cc: "Gao, Yunpeng" , "linux-ia64@vger.kernel.org" , "linux-kernel@vger.kernel.org" In-Reply-To: <20090120132317.B0B3.KOSAKI.MOTOHIRO@jp.fujitsu.com> References: <38D9F46DFF92C54980D2F2C1E8EE31301FC5E7FB@pdsmsx503.ccr.corp.intel.com> <20090120132317.B0B3.KOSAKI.MOTOHIRO@jp.fujitsu.com> Content-Type: text/plain; charset=utf-8 Date: Mon, 19 Jan 2009 12:46:18 +0100 Message-Id: <1232365578.5764.4.camel@odie.local> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org man, 19 01 2009 kl. 13:25 +0900, skrev KOSAKI Motohiro: > > Hi all, > > > > I have to use 64bit variable in my 2.6.27 kernel NAND driver as below: > > --------------------------------------------------------------------------- > > u64 NAND_capacity; > > unsigned int block_num, block_size; > > ... > > block_num = NAND_capacity / block_size; > > --------------------------------------------------------------------------- > > but it failed when compiling and reports 'undefined reference to `__udivdi3'. > > > > Does any idea about this? I need to include some special head file or change something in Kconfig? > > > > BTW, the environment is Fedora Core 9, gcc 4.3.0. > > Couldn't you use do_div()? Perhaps rather div_u64, but otherwise he should be able to yes. Simon Holm Thøgersen