From: Alexandre Courbot <acourbot@nvidia.com>
Date: Tue, 15 Jul 2014 01:36:11 +0000 (+0900)
Subject: drm/nve4/graph: do not crash if no power device present
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~96^2~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25856c0b04fd9ea616acaf3318d0db1cd70bb00a;p=pandora-kernel.git

drm/nve4/graph: do not crash if no power device present

Detect and workaround the absence of a power device so chips that do not
feature one (e.g. GK20A) can still use this driver.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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