drm/i915: POSTING_READ IPS_CTL before waiting for the vblank
authorPaulo Zanoni <paulo.r.zanoni@intel.com>
Thu, 19 Sep 2013 20:03:05 +0000 (17:03 -0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 20 Sep 2013 08:19:01 +0000 (10:19 +0200)
commit81c12f6e78c535533e9258bd9476b5d7419d3cce
treef5abf5a51b112feffbcd6d17910618b009221daa
parent6ceeeec04509ac40f91cfc8ffc129e22a136aafe
drm/i915: POSTING_READ IPS_CTL before waiting for the vblank

Make sure we write to IPS before we actually wait.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_display.c