From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jurriaan Subject: Re: Re: Possible quick fix for ACPI routing problem on Nforce2 Date: Sun, 13 Jul 2003 07:39:13 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20030713053913.GB1284@middle.of.nowhere> References: <200307122352.45704.adq_dvb@lidskialf.net> <200307130218.44398.adq_dvb@lidskialf.net> Reply-To: thunder7-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <200307130218.44398.adq_dvb-fmPXVN3awWJAJAzL26g0SA@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org From: Andrew de Quincey Date: Sun, Jul 13, 2003 at 02:18:44AM +0100 > Hi, I've been playing about with this, and I've found what is happening. > I've not yet tracked down the reason yet, but if anyone else has this > problem, can they try please this fix to see if it is consistent. > > Anyway, IRQs > 15 get set to Active low/Level Sensitive in the IO-APIC on > my board. > > The fix (No patch as this is NOT a proper fix): > Edit arch/i386/kernel/io_apic.c > Find the function io_apic_set_pci_routing() (its the last one in 2.5.74). > Change the line: > entry.polarity = 1; /* Low active */ > > To: > entry.polarity = 0; /* High active */ > > For me, this makes everything work fine. Originally, I also forced these > IRQs to be edge sensitive, but leaving them at level seems to work fine as > well. > No joy on VIA KT400 chipset (bugzilla #678): ide0 get's IRQ 17, during boot multiple oopses occur, starting with 'IRQ 17: nobody cared' right after probing hda. Eventually it crashes hard, after probing hde. Thanks, Jurriaan -- Pay attention, the wreckage seemed to declare. Some things cannot be undone, short of time pivoting in its groove and crawling back on itself. Tad Williams - Otherland Debian (Unstable) GNU/Linux 2.5.75 4112 bogomips load av: 1.06 0.44 0.16 ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps1