From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262771AbTJJJXx (ORCPT ); Fri, 10 Oct 2003 05:23:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262762AbTJJJW5 (ORCPT ); Fri, 10 Oct 2003 05:22:57 -0400 Received: from TYO201.gate.nec.co.jp ([202.32.8.214]:9970 "EHLO TYO201.gate.nec.co.jp") by vger.kernel.org with ESMTP id S262760AbTJJJWQ (ORCPT ); Fri, 10 Oct 2003 05:22:16 -0400 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: <20031010092201.1384537E7@mcspd15.ucom.lsi.nec.co.jp> Date: Fri, 10 Oct 2003 18:22:01 +0900 (JST) From: miles@lsi.nec.co.jp (Miles Bader) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Linus, please apply. [In practice, this only seems to occur in odd debugging situations, but it's quite annoying then.] diff -ruN -X../cludes linux-2.6.0-test7-moo/include/asm-v850/delay.h linux-2.6.0-test7-moo-v850-20031010/include/asm-v850/delay.h --- linux-2.6.0-test7-moo/include/asm-v850/delay.h 2002-11-05 11:25:31.000000000 +0900 +++ linux-2.6.0-test7-moo-v850-20031010/include/asm-v850/delay.h 2003-10-10 16:48:23.000000000 +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)); } /*