From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261607AbVGYUSD (ORCPT ); Mon, 25 Jul 2005 16:18:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261503AbVGYUPZ (ORCPT ); Mon, 25 Jul 2005 16:15:25 -0400 Received: from totor.bouissou.net ([82.67.27.165]:51611 "EHLO totor.bouissou.net") by vger.kernel.org with ESMTP id S261497AbVGYUOL (ORCPT ); Mon, 25 Jul 2005 16:14:11 -0400 From: Michel Bouissou Organization: Me, Myself and I To: Alan Stern Subject: Re: VIA KT400 + Kernel 2.6.12 + IO-APIC + uhci_hcd = IRQ trouble Date: Mon, 25 Jul 2005 22:14:06 +0200 User-Agent: KMail/1.7.2 Cc: "Protasevich, Natalie" , linux-kernel@vger.kernel.org References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Content-Disposition: inline Message-Id: <200507252214.06802@totor.bouissou.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Le Lundi 25 Juillet 2005 21:18, Alan Stern a écrit : > > It seems quite clear that the EHCI controller's IRQ line is causing the > problems. Just out of curiousity, what happens if you really do remove > the UHCI driver, keeping only the EHCI driver, and then plug in the mouse? > Off hand I would expect nothing much to happen -- maybe a line or two in > the system log, no change to the IRQ counters, and the mouse doesn't work > (not even erratically). As you expect, in such a condition (with only ehci loaded), absolutely nothing happens when plugging the mouse. OTOH, a high-speed device is recognized, althouh it generates messages like: totor kernel: usb 1-5: device not accepting address 3, error -71 totor kernel: usb 1-5: new high speed USB device using ehci_hcd and address 4 totor kernel: usb 1-5: device not accepting address 4, error -71 totor kernel: usb 1-5: new high speed USB device using ehci_hcd and address 5 If plugged to any USB socket, except the two integrated to the motherboard connectors plate. There only it fully succeeds without such errors. Cheers. -- Michel Bouissou OpenPGP ID 0xDDE8AC6E