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Date: Tue, 18 Aug 2009 09:41:56 -0600
Subject: Re: Purpose of parameter in sysfs binary read
From: "Rick L. Vinyard, Jr." <rvinyard@cs.nmsu.edu>
To: "Greg KH" <greg@kroah.com>
Cc: "Linux USB" <linux-usb@vger.kernel.org>,
       "LKML" <linux-kernel@vger.kernel.org>
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Greg KH wrote:
> On Tue, Aug 18, 2009 at 08:55:29AM -0600, Rick L. Vinyard, Jr. wrote:
> What are you using the binary sysfs attribute for?  It should ONLY be
> used as a pass-through to and from hardware, with no interpretation by
> the kernel at all.

It's for the Logitech G13's game panel image (a simple binary bitmap of
the pixels).

It doesn't do any interpretation... just a few checks on the magic number
and size.