From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758534AbYBESPm (ORCPT ); Tue, 5 Feb 2008 13:15:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754431AbYBESPe (ORCPT ); Tue, 5 Feb 2008 13:15:34 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:42000 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752353AbYBESPe (ORCPT ); Tue, 5 Feb 2008 13:15:34 -0500 Date: Tue, 5 Feb 2008 10:15:12 -0800 (PST) From: Linus Torvalds To: Bjorn Helgaas cc: Robert Hancock , Andrew Morton , avuton@gmail.com, yakui.zhao@intel.com, shaohua.li@intel.com, trenn@suse.de, Linux Kernel Mailing List , alsa-devel@alsa-project.org Subject: Re: a7839e96 (PNP: increase max resources) breaks my ALSA intel8x0 sound card In-Reply-To: <200802050003.32591.bjorn.helgaas@hp.com> Message-ID: References: <200802041341.37313.bjorn.helgaas@hp.com> <200802050003.32591.bjorn.helgaas@hp.com> User-Agent: Alpine 1.00 (LFD 882 2007-12-20) 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 On Tue, 5 Feb 2008, Bjorn Helgaas wrote: > > > > - PnP/ACPI resource allocation *after* it, but before driver loading > > (which wll cause new resources to be allocated). This could be > > fs_initcall, or whatever (that's what things like "acpi_event_init" > > already do). > > If we put the PNP system driver here, we can easily do a quirk that > ignores PNP resources that overlap PCI resources. No, you don't need any quirks: you just do an "insert_resource()" and ignore the error return. If the (bogus) PnP resource clashes with the (correct) hardware PCI resource, the insert will simply fail. No quirks needed. > But it's kind of > ugly to have the ACPI PCI root driver early and other PNP drivers > later because they're basically similar animals. No they are not. If one does just device enumeration, and the other does resource registrations, then they ARE NOT similar animals at all. Don't claim that they are. Linus