linux-kernel - Re: pl2303 - pl2303_open - failed submitting interrupt urb, error -28

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Date:	Tue, 9 Dec 2008 21:11:20 +0100
From:	Marc Haber <mh+linux-kernel@...schlus.de>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Greg KH <greg@...ah.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: pl2303 - pl2303_open - failed submitting interrupt urb, error -28

On Fri, Dec 05, 2008 at 11:03:41AM -0500, Alan Stern wrote:
> Yes it is.  You can force port P of the EHCI controller on bus B to run 
> at low/full speed by doing:
> 
> 	echo P >/sys/class/usb_host/usb_hostB/companion
> 
> To allow port P to run at high speed again, use the same command but 
> write -P instead of P.

I will try that and report back.

Greetings
Marc

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