Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751840AbWJWJQD (ORCPT ); Mon, 23 Oct 2006 05:16:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751849AbWJWJQD (ORCPT ); Mon, 23 Oct 2006 05:16:03 -0400 Received: from embla.aitel.hist.no ([158.38.50.22]:26575 "HELO embla.aitel.hist.no") by vger.kernel.org with SMTP id S1751840AbWJWJQB (ORCPT ); Mon, 23 Oct 2006 05:16:01 -0400 Message-ID: <453C877E.6090002@aitel.hist.no> Date: Mon, 23 Oct 2006 11:12:30 +0200 From: Helge Hafting User-Agent: Thunderbird 1.5.0.7 (X11/20060927) MIME-Version: 1.0 To: Alan Stern CC: Christopher Monty Montgomery , Paolo Ornati , Kernel development list , USB development list Subject: Re: [linux-usb-devel] 2.6.19-rc1-mm1 - locks when using "dd bs=1M" from card reader References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1366 Lines: 39 Alan Stern wrote: >>> You could try putting a printk() just before the BUG() to display the >>> values of ehci->reclaim and qh->qh_state. Maybe also change the BUG() to >>> >>> >> ehci->reclaim=0 >> qh->qh_state=5 >> > > 5 is QH_STATE_COMPLETING. That explains why the BUG() fires. > > At this point it's beyond me. Monty will have to take it from here. > > >> During boot I get lots of those "Hardware error, end-of-data detected" >> messages, but I've never seen it crash during bootup. >> > > Those messages are from the card reader. It doesn't seem to be working > right. It returns the "end-of-data" error in response to a PREVENT MEDIUM > REMOVAL command Unlike a cdrom, it doesn't have the means to prevent media removal. :-) > and it returns a phase error in response to a READ > command. In spite of the fact that it claims to have a 256 MB card > present. > It has slots for several different cards, all the other slots are empty. Perhaps it is broken, but interesting as a "stress-test". Linux should not crash because of a bad usb thing, just complain. Helge Hafting - 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/