From 4c60fac111961e7eb71a08928c22b43cff55f1fb Mon Sep 17 00:00:00 2001
From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Wed, 9 Oct 2013 08:25:16 +0100
Subject: [PATCH] drm/nouveau: consider CLASS_DISPLAY_3D devices while
 detecting dsm/optimus

The present code assumes that optimus is present whenever two
VGA (PCI_CLASS_DISPLAY_VGA) devices are present. This does not
seem to be the case of newer laptops with optimus, in which
case the nvidia gpu is a PCI_CLASS_DISPLAY_3D device.

Rework the logic so that we count both VGA and 3D devices,
when contemplating if optimus is present on the platform.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70208
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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