Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752262AbZG1Ods (ORCPT ); Tue, 28 Jul 2009 10:33:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751061AbZG1Odr (ORCPT ); Tue, 28 Jul 2009 10:33:47 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:38891 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750902AbZG1Odq (ORCPT ); Tue, 28 Jul 2009 10:33:46 -0400 Date: Tue, 28 Jul 2009 10:33:46 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Valdis.Kletnieks@vt.edu cc: Andrew Morton , David Brownell , Jiri Kosina , Greg Kroah-Hartman , , Subject: Re: 31-rc3-mmotm0716 - dead USB trackball mouse kills entire system In-Reply-To: <70893.1248739158@turing-police.cc.vt.edu> 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: 1355 Lines: 30 On Mon, 27 Jul 2009 Valdis.Kletnieks@vt.edu wrote: > Confirming - the patch in that thread prevents the system lockup I was > seeing. > > So it looks like hid_reset() getting more chatty sometime in the last 2 weeks > was a red herring, and one I can't actually complain about - it was quite > legitimately whinging about not being able to reset a device that was in fact > dead in the water at the time. Given that, and a working patch for ehci-hcd.c, > I'm having a hard time finding the enthusiasm to track down what exactly > changed in hid-core.c. :) > > The change in hid-core.c behavior just had the bad luck to land in -mmotm at > the exact same time the bug in ehci-hcd.c landed. So we had two user-visible > behavior changes in the same area of code at the same time. Hilarity ensues. :) > > Thanks for pointing me at the actual fix. ;) A question for you: Do you now observe any warnings in the dmesg log if you rmmod ehci-hcd after the trackball mouse is gone? Apparently the patch you tested isn't perfect and some stuff gets leaked. I'm trying to track down the problem. 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/