Symbol: UART_FCR_R_TRIG_SHIFT
drivers/tty/serial/8250/8250_port.c
2966
return (--i) << UART_FCR_R_TRIG_SHIFT;
include/uapi/linux/serial_reg.h
102
(((x) & UART_FCR_TRIGGER_MASK) >> UART_FCR_R_TRIG_SHIFT)