Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757098AbYFZPwi (ORCPT ); Thu, 26 Jun 2008 11:52:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753508AbYFZPw2 (ORCPT ); Thu, 26 Jun 2008 11:52:28 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:58855 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752711AbYFZPw1 (ORCPT ); Thu, 26 Jun 2008 11:52:27 -0400 Date: Thu, 26 Jun 2008 11:52:25 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Lukas Hejtmanek cc: Greg KH , Kernel development list , USB list Subject: Re: 2.6.26-rc1 regression since 2.6.25 - problem in 2.6.26-rc8 again In-Reply-To: <20080626153740.GG4486@ics.muni.cz> Message-ID: 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 Content-Length: 1233 Lines: 38 On Thu, 26 Jun 2008, Lukas Hejtmanek wrote: > Hello, > > I have another USB problem with Lenovo T61 Thinkpad. > > I'm using kernel 2.6.26-rc8. I do use CONFIG_USB_SUSPEND. > > If I attach USB disk (using EHCI driver), the disk is found and it is working. > If I remove the disk, undock the laptop, dock the laptop again and plug the > disk, the disk is not found at all until I remove and reinsert the EHCI > driver. > > I noticed that if I do not unplug the disk berofe undocking, it works after > docking back. What happens if instead of reloading ehci-hcd, you unplug and replug the disk? What happens if you undock with the disk plugged in, then unplug the disk, then dock the laptop, and then plug in the disk? > any ideas? What does usbmon reveal when you dock the laptop again and then plug in the disk (see Documentation/usb/usbmon.txt)? Can you provide a comparable usbmon log for 2.6.25? Did the problem go away at any time between 2.6.26-rc1 and -rc8? Alan Stern -- 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/