From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266659AbUBFHzA (ORCPT ); Fri, 6 Feb 2004 02:55:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266663AbUBFHzA (ORCPT ); Fri, 6 Feb 2004 02:55:00 -0500 Received: from TYO202.gate.nec.co.jp ([210.143.35.52]:16526 "EHLO TYO202.gate.nec.co.jp") by vger.kernel.org with ESMTP id S266659AbUBFHyx (ORCPT ); Fri, 6 Feb 2004 02:54:53 -0500 To: Linus Torvalds Subject: [PATCH][v850] Make v850 __delay function handle a loop count of zero Cc: linux-kernel@vger.kernel.org Reply-To: Miles Bader Message-Id: <20040206075447.B796645A@mcspd15> Date: Fri, 6 Feb 2004 16:54:47 +0900 (JST) From: miles@mcspd15.ucom.lsi.nec.co.jp (Miles Bader) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org [In practice, this only seems to occur in odd debugging situations, but it's quite annoying then.] diff -ruN -X../cludes linux-2.6.2-uc0/include/asm-v850/delay.h linux-2.6.2-uc0-v850-20040206/include/asm-v850/delay.h --- linux-2.6.2-uc0/include/asm-v850/delay.h 2002-11-05 11:25:31.000000000 +0900 +++ linux-2.6.2-uc0-v850-20040206/include/asm-v850/delay.h 2004-02-06 14:02:30.000000000 +0900 @@ -2,8 +2,8 @@ * include/asm-v850/delay.h -- Delay routines, using a pre-computed * "loops_per_second" value * - * Copyright (C) 2001 NEC Corporation - * Copyright (C) 2001 Miles Bader + * Copyright (C) 2001,03 NEC Corporation + * Copyright (C) 2001,03 Miles Bader * Copyright (C) 1994 Hamish Macdonald * * This file is subject to the terms and conditions of the GNU General @@ -18,8 +18,9 @@ extern __inline__ void __delay(unsigned long loops) { - __asm__ __volatile__ ("1: add -1, %0; bnz 1b" - : "=r" (loops) : "0" (loops)); + if (loops) + __asm__ __volatile__ ("1: add -1, %0; bnz 1b" + : "=r" (loops) : "0" (loops)); } /*