UART_FCR_R_TRIG_BITS 2853 drivers/tty/serial/8250/8250_port.c 	bytes = conf_type->rxtrig_bytes[UART_FCR_R_TRIG_BITS(up->fcr)];
UART_FCR_R_TRIG_BITS 2863 drivers/tty/serial/8250/8250_port.c 	if (!conf_type->rxtrig_bytes[UART_FCR_R_TRIG_BITS(UART_FCR_R_TRIG_00)])