extra_ier 3305 drivers/gpu/drm/i915/i915_irq.c u32 extra_ier = GEN8_PIPE_VBLANK | GEN8_PIPE_FIFO_UNDERRUN; extra_ier 3318 drivers/gpu/drm/i915/i915_irq.c ~dev_priv->de_irq_mask[pipe] | extra_ier);