linux-kernel - Re: [PATCHv5 2/3] USB: gadget: Use new composite features in some gadgets

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Date:	Fri, 30 Jul 2010 15:01:50 -0700 (PDT)
From:	David Brownell <david-b@...bell.net>
To:	Greg KH <greg@...ah.com>
Cc:	Michał Nazarewicz <m.nazarewicz@...sung.com>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Dries Van Puymbroeck <Dries.VanPuymbroeck@...imo.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCHv5 2/3] USB: gadget: Use new composite features in some gadgets


> > That's too extreme; the original handful of
> > NetChip IDs were (and are!!) correctly assigned,
> > and there's no reason to change them.  In fact,
> > there's a lot of reason to continue using them
> > while config files and drivers expect to see
> > those specific IDs (as is reasonable).  That's
> > to avoid breaking working configs...
> 
> True, I was thinking that for the class-type devices, we
> could use the
> linux foundation vid, as changing them shouldn't
> matter right?

There are INF files using NetChip IDs, so
changing them would break stuff.

Newer interfaces using new VIDS/PIDS?  Fine.
> 
> Or does Windows really care about the vid/pid for
> a class device somehow?

My understanding is that it does, since it really
doesn't have a good concept of "class" being the
generic thing.  INF files embed VIDS/PIDS even
for drivers implementing class specs.  MSFT was
being stupid again...

- Dave



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