From 95cb1b02b0f8e690cbcc479924573b4fb26c2e8f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 2 Oct 2012 20:10:37 +0200 Subject: [PATCH] drm/i915: don't frob the vblank ts in finish_page_flip Now that we correctly generate it, this hack is no longer required (and might actually paper over a serious bug). pageflip timestamps are sanity check in the latest version of the flip-test in intel-gpu-tools. v2: Also remove the gettimeofday(&now) which is no longer used. Noticed by Mario Kleiner. Reviewed-by: mario.kleiner@tuebingen.mpg.de Tested-by: Imre Deak Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 23 +---------------------- 1 file changed, 1 insertion(+), 22 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 57c1309733f6..67912febb322 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6181,15 +6181,13 @@ static void do_intel_finish_page_flip(struct drm_device *dev, struct intel_unpin_work *work; struct drm_i915_gem_object *obj; struct drm_pending_vblank_event *e; - struct timeval tnow, tvbl; + struct timeval tvbl; unsigned long flags; /* Ignore early vblank irqs */ if (intel_crtc == NULL) return; - do_gettimeofday(&tnow); - spin_lock_irqsave(&dev->event_lock, flags); work = intel_crtc->unpin_work; if (work == NULL || !work->pending) { @@ -6203,25 +6201,6 @@ static void do_intel_finish_page_flip(struct drm_device *dev, e = work->event; e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl); - /* Called before vblank count and timestamps have - * been updated for the vblank interval of flip - * completion? Need to increment vblank count and - * add one videorefresh duration to returned timestamp - * to account for this. We assume this happened if we - * get called over 0.9 frame durations after the last - * timestamped vblank. - * - * This calculation can not be used with vrefresh rates - * below 5Hz (10Hz to be on the safe side) without - * promoting to 64 integers. - */ - if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) > - 9 * crtc->framedur_ns) { - e->event.sequence++; - tvbl = ns_to_timeval(timeval_to_ns(&tvbl) + - crtc->framedur_ns); - } - e->event.tv_sec = tvbl.tv_sec; e->event.tv_usec = tvbl.tv_usec; -- GitLab