Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751518AbXBVIyX (ORCPT ); Thu, 22 Feb 2007 03:54:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751517AbXBVIyX (ORCPT ); Thu, 22 Feb 2007 03:54:23 -0500 Received: from caramon.arm.linux.org.uk ([217.147.92.249]:2753 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751514AbXBVIyW (ORCPT ); Thu, 22 Feb 2007 03:54:22 -0500 Date: Thu, 22 Feb 2007 08:54:13 +0000 From: Russell King To: "Michael K. Edwards" Cc: Jose Goncalves , Frederik Deweerdt , akpm@linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: Serial related oops Message-ID: <20070222085413.GB15841@flint.arm.linux.org.uk> Mail-Followup-To: "Michael K. Edwards" , Jose Goncalves , Frederik Deweerdt , akpm@linux-foundation.org, linux-kernel@vger.kernel.org References: <20070219143520.GB27370@flint.arm.linux.org.uk> <20070220144814.GJ566@slug> <20070219150508.GD27370@flint.arm.linux.org.uk> <45D9D073.7020701@inov.pt> <20070219164200.GF27370@flint.arm.linux.org.uk> <45D9E46C.4030408@inov.pt> <20070219212347.GA4258@flint.arm.linux.org.uk> <45DC537B.6020108@inov.pt> <20070221230503.GA28156@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 751 Lines: 18 On Wed, Feb 21, 2007 at 04:34:15PM -0800, Michael K. Edwards wrote: > Are you using an unpatched gcc 4.1.1? Its optimizer did nasty things > to us, at least on an ARM target ... That's ruled out. Please think about it for a moment - serial_in() managed to work correctly most of the time, and then spontaneously changes its well-defined ABI behaviour in a way that analysis of the asm doesn't allow it to. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/