From: Imre Deak <imre.deak@intel.com>
Date: Tue, 23 Oct 2012 18:53:25 +0000 (+0000)
Subject: drm: use monotonic time in drm_calc_vbltimestamp_from_scanoutpos
X-Git-Tag: v3.8-rc1~82^2~170
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e62f2f5acba1d466da047983ae16f6b96b68b310;p=pandora-kernel.git

drm: use monotonic time in drm_calc_vbltimestamp_from_scanoutpos

For measuring duration we want to avoid that our start/end timestamps
jump, so use monotonic instead of real time for that.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: mario.kleiner
Signed-off-by: Dave Airlie <airlied@redhat.com>
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