Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752674AbXBKNUZ (ORCPT ); Sun, 11 Feb 2007 08:20:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932078AbXBKNUZ (ORCPT ); Sun, 11 Feb 2007 08:20:25 -0500 Received: from cavan.codon.org.uk ([217.147.92.49]:39877 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752674AbXBKNUY (ORCPT ); Sun, 11 Feb 2007 08:20:24 -0500 Date: Sun, 11 Feb 2007 13:19:57 +0000 From: Matthew Garrett To: Willy Tarreau Cc: "Rafael J. Wysocki" , Daniel Barkalow , nigel@nigel.suspend2.net, Robert Hancock , linux-kernel , Jeff Garzik , Pavel Machek , pm list Message-ID: <20070211131957.GA6039@srcf.ucam.org> References: <200702101130.44471.rjw@sisk.pl> <200702102050.28218.rjw@sisk.pl> <20070211065404.GA943@1wt.eu> <20070211121339.GB4204@srcf.ucam.org> <20070211130943.GA1868@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070211130943.GA1868@1wt.eu> User-Agent: Mutt/1.5.12-2006-07-14 X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk Subject: Re: [PATCH] Re: NAK new drivers without proper power management? X-SA-Exim-Version: 4.2.1 (built Tue, 20 Jun 2006 01:35:45 +0000) X-SA-Exim-Scanned: Yes (on vavatch.codon.org.uk) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1205 Lines: 24 On Sun, Feb 11, 2007 at 02:09:43PM +0100, Willy Tarreau wrote: > Then change the PCI layer to do the basic PM only for known compatible > drivers, and modify only the known-compatible drivers to mark them > explicitly compatible. IMHO, it generally is a bad idea to require that > any driver explicitly states what it *does not* support. It's the reason > why users encounter problem on new features with old drivers. For instance, > do you know if the old ISA NE2000 driver breaks suspend ? I don't know, > but I would at least expect it not to support it by default. It's best > to announce what *is* supported and consider everything unimplemented > otherwise explicitly stated. This ignores the reality of the situation, which is that many drivers support suspend and resume despite the lack of any explicit implementation. Changing things so they're flagged as broken when they're not would be a regression. -- Matthew Garrett | mjg59@srcf.ucam.org - 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/