HS_CTRL_FIFO_FULL  975 drivers/gpu/drm/gma500/psb_intel_reg.h #define HS_CTRL_FIFO_FULL			(1 << 16)
HS_CTRL_FIFO_FULL 10826 drivers/gpu/drm/i915/i915_reg.h #define  HS_CTRL_FIFO_FULL				(1 << 16)