From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758126AbZASEZ0 (ORCPT ); Sun, 18 Jan 2009 23:25:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754028AbZASEZM (ORCPT ); Sun, 18 Jan 2009 23:25:12 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:41961 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750936AbZASEZL (ORCPT ); Sun, 18 Jan 2009 23:25:11 -0500 Date: Mon, 19 Jan 2009 13:25:04 +0900 (JST) From: KOSAKI Motohiro To: "Gao, Yunpeng" Subject: how to fix nand driver build breakage Cc: kosaki.motohiro@jp.fujitsu.com, "linux-ia64@vger.kernel.org" , "linux-kernel@vger.kernel.org" In-Reply-To: <38D9F46DFF92C54980D2F2C1E8EE31301FC5E7FB@pdsmsx503.ccr.corp.intel.com> References: <38D9F46DFF92C54980D2F2C1E8EE31301FC5E7FB@pdsmsx503.ccr.corp.intel.com> Message-Id: <20090120132317.B0B3.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.42 [ja] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > 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()?