From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752412AbZG3VKz (ORCPT ); Thu, 30 Jul 2009 17:10:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752171AbZG3VKy (ORCPT ); Thu, 30 Jul 2009 17:10:54 -0400 Received: from smtp2.it.da.ut.ee ([193.40.5.67]:34938 "EHLO smtp2.it.da.ut.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752004AbZG3VKy (ORCPT ); Thu, 30 Jul 2009 17:10:54 -0400 X-Greylist: delayed 1190 seconds by postgrey-1.27 at vger.kernel.org; Thu, 30 Jul 2009 17:10:54 EDT Date: Fri, 31 Jul 2009 00:10:50 +0300 (EEST) From: Meelis Roos To: Linux Kernel list Subject: Re: Thinkpad X20 docking troubles - irq routing, USB strangeness In-Reply-To: Message-ID: References: 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 > The first is irq-related. As soon as yenta driver discovers the > additional ports, screaming irq happens and this shared irq is disabled. > This documented in the dmesg below. This is my main problem, others may > be secondary to it (at least the usb one). One more data point: the behaviour seems to be consistent at least since 2.6.27 (the oldest sequential kernel I have around). I also have 2.6.21 laying around, this kernel did not support docking at all. Another data point: starting the system without dock and later docking, PCI devices in dock are not found and no yenta irq problems occur. When docking, USB 4-port hub is found and works. -- Meelis Roos (mroos@linux.ee)