SIFIVE_SERIAL_RXDATA_DATA_SHIFT   73 drivers/tty/serial/sifive.c #define SIFIVE_SERIAL_RXDATA_DATA_MASK		(0xff << SIFIVE_SERIAL_RXDATA_DATA_SHIFT)
SIFIVE_SERIAL_RXDATA_DATA_SHIFT  421 drivers/tty/serial/sifive.c 		SIFIVE_SERIAL_RXDATA_DATA_SHIFT;