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Date: Sun, 11 Oct 2009 08:56:23 +1100
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Alan Stern <stern@...land.harvard.edu>
Cc: Josua Dietze <digidietze@...isberghof.de>,
Ben Efros <ben@...doctor.com>,
fangxiaozhi <huananhu@...wei.com>, Greg KH <greg@...ah.com>,
Kernel development list <linux-kernel@...r.kernel.org>,
USB list <linux-usb@...r.kernel.org>,
Hugh Blemings <hugh@...mings.org>
Subject: Re: USB serial regression 2.6.31.1 -> 2.6.31.2
> Further REQUEST SENSE commands therefore requested 96 bytes of data
> instead of the standard 18 bytes. With LUN 0 this worked okay. But
> with LUN 1 it didn't; the device reported a failure of the REQUEST
> SENSE. This is what caused usb-storage to issue the device reset.
>
> After the reset usb-storage continued to ask for 96 bytes of sense
> data, and LUN 1 continued to fail the commands. Hence the repeated
> resets.
Maybe a better approach would be to go back to 18 bytes when it fails,
what do you think ?
Ben.
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