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Date: Tue, 18 Aug 2009 09:02:15 -0700
From: Greg KH <greg@kroah.com>
To: "Rick L. Vinyard, Jr." <rvinyard@cs.nmsu.edu>
Cc: Linux USB <linux-usb@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: Purpose of parameter in sysfs binary read
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On Tue, Aug 18, 2009 at 09:41:56AM -0600, Rick L. Vinyard, Jr. wrote:
> 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.

Cool.  Have a pointer to the driver yet?

thanks,

greg k-h