From: Bernie Thompson <bernie@plugable.com>
Date: Sun, 10 Jul 2011 07:30:00 +0000 (-0700)
Subject: drivers/video/udlfb match class, subclass, and protocol
X-Git-Tag: v3.2-rc1~120^2~51^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b63d10130e68aa6480cc1b2483d7c5ce57a05481;p=pandora-kernel.git

drivers/video/udlfb match class, subclass, and protocol

Match udlfb only against vendor-specific class (e.g. only DisplayLink
graphics, not composite standard audio class interfaces). This enables
compatibility with composite graphics+audio devices (e.g. HDMI).

Match udlfb only against compatible subclass 0 and protocol 0 chips.
DisplayLink's USB 3.0 generation chips increment these values
to signal that they have a incompatible protocol, preventing udlfb
from erroneously matching to hardware it does not support.

Tested to confirm proper behavior on both USB 2.0 and USB 3.0
generation devices.

Reported-by: Andrew Kephart <akephart@akephart.org>
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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