FIFO_THRESHOLD     18 drivers/staging/pi433/rf69.h #define FIFO_THRESHOLD	15		/* bytes */
FIFO_THRESHOLD    384 drivers/usb/gadget/udc/net2272.h #define 	FIFO_THRESHOLD				11	/* 15:11 */
FIFO_THRESHOLD    207 sound/x86/intel_hdmi_lpe_audio.h #define FIFO_THRESHOLD		0xFE