tx_fifo_bytes     273 drivers/tty/serial/rp2.c 	unsigned long tx_fifo_bytes, flags;
tx_fifo_bytes     281 drivers/tty/serial/rp2.c 	tx_fifo_bytes = readw(up->base + RP2_TX_FIFO_COUNT);
tx_fifo_bytes     284 drivers/tty/serial/rp2.c 	return tx_fifo_bytes ? 0 : TIOCSER_TEMT;