linux-kernel - Re: [PATCH RESEND] hid:Change vendor id for USB_DEVICE_ID_MS_TYPE_COVER

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Message-ID: <alpine.LNX.2.00.1505201636410.8186@pobox.suse.cz>
Date:	Wed, 20 May 2015 16:38:27 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	nick <xerofoify@...il.com>
cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] hid:Change vendor id for USB_DEVICE_ID_MS_TYPE_COVER_3
 to correct id in hid-ids.h

On Wed, 20 May 2015, nick wrote:

> That's a good question and we discussed with Alan about this. Basically 
> the only id that works on non JP models is the one he checked. 

And now you are removing it.

> Your right there may be two vendor ids for the product a.k.a maybe for 
> revisions however to my knowledge there have been no major revisions of 
> the Surface Pro Three. In addition what is the likely hood that a vendor 
> has two ids for the same area 

It's quite common to have multiple PIDs for devices with the same 
internals.

> in the world, as I can't think of one vendor that does this unless 
> differencing between two of the products is important a.k.a like MAC 
> addresses 

MAC address is about distinguishing individial device instances from each 
other. PIDs are something completely different.

-- 
Jiri Kosina
SUSE Labs
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