From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261153AbVGJSuz (ORCPT ); Sun, 10 Jul 2005 14:50:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261156AbVGJSuz (ORCPT ); Sun, 10 Jul 2005 14:50:55 -0400 Received: from usbb-lacimss3.unisys.com ([192.63.108.53]:34065 "EHLO usbb-lacimss3.unisys.com") by vger.kernel.org with ESMTP id S261153AbVGJSuw convert rfc822-to-8bit (ORCPT ); Sun, 10 Jul 2005 14:50:52 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: Kernel 2.6.12 + IO-APIC + uhci_hcd = Trouble Date: Sun, 10 Jul 2005 13:50:50 -0500 Message-ID: <19D0D50E9B1D0A40A9F0323DBFA04ACCE04C45@USRV-EXCH4.na.uis.unisys.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Kernel 2.6.12 + IO-APIC + uhci_hcd = Trouble Thread-Index: AcWFJ1Of0LtOS6rmSfKB9BhUy29kigAWMM5w From: "Protasevich, Natalie" To: "Michel Bouissou" , Cc: , X-OriginalArrivalTime: 10 Jul 2005 18:50:50.0529 (UTC) FILETIME=[4AB01910:01C58580] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: linux-kernel-owner@vger.kernel.org > [mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of > Michel Bouissou > Sent: Sunday, July 10, 2005 2:11 AM > To: linux-kernel@vger.kernel.org > Cc: stern@rowland.harvard.edu; mingo@redhat.com > Subject: Kernel 2.6.12 + IO-APIC + uhci_hcd = Trouble > > Hi there, > > I use a Gigabyte GA7-VAXP motherboard that has been fine for > more than 2 years with 2.4 series kernels, and that gives > trouble with 2.6.12 (and previous) kernels. > > The problem seems to sit between the UP IO-APIC and USB > uhci_hcd driver. > > The GA7-VAXP MB is equipped with an Athlon 2000+ XP and a VIA > KT400 chipset. > > Using 2.4 series kernel the IO-APIC is used just fine. Was > never source of any kind of problem. > > Using 2.6.12 kernel, if the IO-APIC is enabled in the kernel > configuration, then the interrupt controlling the uhci_hcd > USB controller gets disabled as soon as uhci_hcd is initialized. Michel, Symptoms that you describe resemble several IRQ problems with VIA chipset reported by others (but not quite...) Could you check on bugzilla #4843 please http://bugzilla.kernel.org/show_bug.cgi?id=4843 and see if the patch fixes your problem. Thanks, --Natalie