From: Inki Dae <inki.dae@samsung.com>
Date: Tue, 11 Sep 2012 09:25:21 +0000 (+0900)
Subject: drm/exynos: check crtc's dpms mode at page flip
X-Git-Tag: v3.7-rc1~86^2~1^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef6223dc6bab64c99b5c869b652fa13436afc38a;p=pandora-kernel.git

drm/exynos: check crtc's dpms mode at page flip

when page flip is requested, crtc's dpms mode should be on.
if not on, return -EINVAL so that it doesn't access hardware.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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