tree 96cbbf354213b0320a9c8731a9df0cd682d3ad16
parent 08c71e5e817a956389af5da5e99ab3e26d5c673d
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1407325786 +0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1407357563 +0200

drm: Don't clear vblank timestamps when vblank interrupt is disabled

Clearing the timestamps causes us to send zeroed timestamps to userspace
if they get sent out in response to the drm_vblank_off(). It's better
to send the very latest timestamp and count instead.

Testcase: igt/kms_flip/modeset-vs-vblank-race
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>