linux-kernel - Re: Oops with minicom and USB serial with Linux 2.6.30-rc8

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Date:	Fri, 5 Jun 2009 11:08:29 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Peter Chubb <peterc@...ato.unsw.edu.au>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: Oops with minicom and USB serial with Linux 2.6.30-rc8

On Fri, 5 Jun 2009, Peter Chubb wrote:

> I rebuilt with frame pointers and debug symbols.
> I see lots and lots of:
> 
> ....
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2: clear tt 1 (1042) error -71
> usb 2-2.3: USB disconnect, address 14
> 
> Investigations continue...  usb 2-2 is the hub to which the PL2303
> is attached.
> 
> I now see a similar traceback to before, not when I press the reset
> button, but when I remove the USB connector.

A couple of relevant patches were posted recently:

	http://marc.info/?l=linux-usb&m=124395806322087&w=2
	http://marc.info/?l=linux-usb&m=124395806222085&w=2

The second is more revelant than the first, but it might not apply 
without the first one.

Alan Stern

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