From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Wed, 26 Mar 2014 23:37:21 +0000 (-0400)
Subject: drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~207^2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3d0b1218d351c6e6f3cea36abe22236a08cb246;p=pandora-kernel.git

drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi

There appear to be a crop of new hardware where the vbios is not
available from PROM/PRAMIN, but there is a valid _ROM method in ACPI.
The data read from PCIROM almost invariably contains invalid
instructions (still has the x86 opcodes), which makes this a low-risk
way to try to obtain a valid vbios image.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76475
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: <stable@vger.kernel.org> # v2.6.35+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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