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i915: Only schedule vblank tasklet if there are scheduled swaps pending. 

This fixes issues on X server startup with versions of xf86-video-intel that
enable the IRQ before they have a context ID.
(cherry picked from 7af93dd984 commit)
main
Michel Dänzer 2006-09-29 10:27:29 +02:00
parent 48367fdfe6
commit 17a640419a
1 changed files with 2 additions and 1 deletions
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3
shared-core/i915_irq.c
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@ -176,7 +176,8 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
DRM_WAKEUP(&dev->vbl_queue); DRM_WAKEUP(&dev->vbl_queue);
drm_vbl_send_signals(dev); drm_vbl_send_signals(dev);
drm_locked_tasklet(dev, i915_vblank_tasklet); if (dev_priv->swaps_pending > 0)
drm_locked_tasklet(dev, i915_vblank_tasklet);
} }
return IRQ_HANDLED; return IRQ_HANDLED;