From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 6 Aug 2014 11:49:48 +0000 (+0300)
Subject: drm: Have the vblank counter account for the time between vblank irq disable and... 
X-Git-Tag: fixes-against-v3.18-rc2~73^2~39^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=812e7465a7decf3cca0b5f71977a25eecd9626a4;p=pandora-kernel.git

drm: Have the vblank counter account for the time between vblank irq disable and drm_vblank_off()

If the vblank irq has already been disabled (via the disable timer) when
we call drm_vblank_off() sample the counter and timestamp one last time.
This will make the sure that the user space visible counter will account
for time between vblank irq disable and drm_vblank_off().

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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