Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764488AbXJEVN3 (ORCPT ); Fri, 5 Oct 2007 17:13:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763366AbXJEVNK (ORCPT ); Fri, 5 Oct 2007 17:13:10 -0400 Received: from smtp-105-friday.nerim.net ([62.4.16.105]:64370 "EHLO kraid.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1763034AbXJEVNJ (ORCPT ); Fri, 5 Oct 2007 17:13:09 -0400 Date: Fri, 5 Oct 2007 23:13:06 +0200 From: Jean Delvare To: Guennadi Liakhovetski Cc: Greg KH , Alan Stern , linux-kernel@vger.kernel.org, i2c@lm-sensors.org, linux-usb-devel@lists.sourceforge.net Subject: Re: Various problems on Axis 700 Lite VIA C7 Message-ID: <20071005231306.447e91f8@hyperion.delvare> In-Reply-To: References: X-Mailer: Sylpheed-Claws 2.5.5 (GTK+ 2.10.6; x86_64-suse-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1269 Lines: 28 Hi Guennadi, On Fri, 5 Oct 2007 22:22:08 +0200 (CEST), Guennadi Liakhovetski wrote: > Ok, after a day of biseting, it turns out to be a compiler problem. The > gcc-3.3.5 produces at least these two problems (Oops on i2c-viapro probe > and disabled IRQs in USB), whereas 4.1.2 has no problem so far. Up to now > 3.3.5 had no problem compiling 2.6.20+ kernels here, for example, for P-II > SMP. Does it at all look realistic that such "random" run-time problems > are caused by a miscompilation?... Miscompilation can do about anything. There have been a number of other reports about compiler issues lately. Ingo Molnar here: http://kerneltrap.org/Linux/Compiler_Optimization_Bugs_and_World_Domination Me here: http://marc.info/?l=linux-kernel&m=119127234804440&w=2 The trend I am seeing is that we are optimizing for, and testing with, recent compilers (gcc 4.1 and later) and that older compilers tend to break, even though compilers as old as gcc 3.2 are still supposed to be supported. Not good. -- Jean Delvare - 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/