Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755578AbXJIGnu (ORCPT ); Tue, 9 Oct 2007 02:43:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752699AbXJIGnl (ORCPT ); Tue, 9 Oct 2007 02:43:41 -0400 Received: from gate.crashing.org ([63.228.1.57]:38581 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753379AbXJIGnl (ORCPT ); Tue, 9 Oct 2007 02:43:41 -0400 Subject: Re: OHCI root_port_reset() deadly loop... From: Benjamin Herrenschmidt Reply-To: benh@kernel.crashing.org To: David Brownell Cc: greg@kroah.com, davem@davemloft.net, linux-usb-users@lists.sourceforge.net, linux-kernel@vger.kernel.org In-Reply-To: <20071009050019.C6C6023718A@adsl-69-226-248-13.dsl.pltn13.pacbell.net> References: <20071009031049.GD14127@kroah.com> <20071008.201653.43030513.davem@davemloft.net> <20071009033412.E37E323700C@adsl-69-226-248-13.dsl.pltn13.pacbell.net> <20071008.204236.92016616.davem@davemloft.net> <20071009043909.GA4940@kroah.com> <20071009050019.C6C6023718A@adsl-69-226-248-13.dsl.pltn13.pacbell.net> Content-Type: text/plain Date: Tue, 09 Oct 2007 16:43:04 +1000 Message-Id: <1191912184.6355.66.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.12.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1178 Lines: 30 On Mon, 2007-10-08 at 22:00 -0700, David Brownell wrote: > > > > The old /etc/hotplug/usb.rc script made sure to load those modules > > > > in the correct order: EHCI first. > > > > > > I expected to find something cute attempting to handle this under > > > /etc/udev, I have failed so far :-) > > > > No, nothing cute in udev itself, but it seems that all distros that I > > know of have a "load these modules now" type setting in their init > > scripts that can be used here. > > > > I can't think of a way to enforce this load order on the modules > > themselves due to the fact that OHCI might not even be needed for EHCI > > devices on UHCI (Intel) based chipsets :( > > Assuming PCI is present, /sys/bus/pci/devices/*/class can tell > if EHCI is present (0x0c0320) ... if so, load that driver. > Then repeat for OHCI (0x0c0310) and UHCI (0x0c0300). That will not work for all of the non-PCI implementations though. Ben. - 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/