Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753886AbYLGGCT (ORCPT ); Sun, 7 Dec 2008 01:02:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751531AbYLGGCK (ORCPT ); Sun, 7 Dec 2008 01:02:10 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:37649 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751483AbYLGGCJ (ORCPT ); Sun, 7 Dec 2008 01:02:09 -0500 Date: Sat, 6 Dec 2008 22:00:59 -0800 (PST) From: Linus Torvalds To: Arjan van de Ven cc: "Rafael J. Wysocki" , Alan Stern , Takashi Iwai , Greg KH , LKML , Jesse Barnes , pm list , Ingo Molnar , Andrew Morton Subject: Re: [linux-pm] [PATCH 1/3] PCI: Rework default handling of suspend and resume In-Reply-To: <20081206152545.326c8b67@infradead.org> Message-ID: References: <200812062236.44111.rjw@sisk.pl> <20081206152545.326c8b67@infradead.org> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1055 Lines: 28 On Sat, 6 Dec 2008, Arjan van de Ven wrote: > > the problem is that the system bios can have reassigned interrupts > after resume, and afaik we need to re-evaluate the ACPI methods to > get the new mapping. > So we need to unregister + re-register to make that happen Can you give actual examples of real life situations? Because quite frankly, it sounds less and less likely for any relevant hardware. It's a non-issue for MSI, for example. And it's a non-issue for any sane interrupt source I can think of. In other words, I've heard that claim before - and I just don't believe it. I've never heard a realistic explanation of why it would happen for a normal PCI driver. And I still claim that it's a very odd and special case if it does. And btw, I'm talking suspend, not hibernate. Linus -- 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/