From: Dave Airlie <airlied@redhat.com>
Date: Mon, 10 Oct 2011 08:29:18 +0000 (+0100)
Subject: vgaarb: a NULL bridge is acceptable for root devices.
X-Git-Tag: v3.2-rc3~51^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6252114cbb7edabc1c92bf794153922ee0ea46d;p=pandora-kernel.git

vgaarb: a NULL bridge is acceptable for root devices.

I assumed all PCI buses had a bridge, but playing with qemu recently, I
discovered vgaarb bug where it wasn't detecting both devices shared a bridge
at the root level.

Don't check for NULL, if two buses have a NULL bridge, assume they share the
root bus.

Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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