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Drop workaround for driver vblank counter going backwards. 

The driver code that caused this is no longer necessary and has been dropped.
main
Michel Dänzer 2008-07-21 08:16:59 +02:00
parent e4feaf506d
commit f529a510d2
1 changed files with 2 additions and 9 deletions
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11
linux-core/drm_irq.c
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@ -355,19 +355,12 @@ static void drm_update_vblank_count(struct drm_device *dev, int crtc)
* a long time. * a long time.
*/ */
cur_vblank = dev->driver->get_vblank_counter(dev, crtc); cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
diff = cur_vblank - dev->last_vblank[crtc];
if (cur_vblank < dev->last_vblank[crtc]) { if (cur_vblank < dev->last_vblank[crtc]) {
if (cur_vblank == dev->last_vblank[crtc] - 1) { diff += dev->max_vblank_count;
diff = 0;
} else {
diff = dev->max_vblank_count -
dev->last_vblank[crtc];
diff += cur_vblank;
}
DRM_DEBUG("last_vblank[%d]=0x%x, cur_vblank=0x%x => diff=0x%x\n", DRM_DEBUG("last_vblank[%d]=0x%x, cur_vblank=0x%x => diff=0x%x\n",
crtc, dev->last_vblank[crtc], cur_vblank, diff); crtc, dev->last_vblank[crtc], cur_vblank, diff);
} else {
diff = cur_vblank - dev->last_vblank[crtc];
} }
DRM_DEBUG("enabling vblank interrupts on crtc %d, missed %d\n", DRM_DEBUG("enabling vblank interrupts on crtc %d, missed %d\n",