UART_FCTR - Linux

Symbol: UART_FCTR

drivers/tty/serial/8250/8250_port.c

fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX);

drivers/tty/serial/8250/8250_port.c

serial_port_out(port, UART_FCTR, fctr | UART_FCTR_RX);

drivers/tty/serial/8250/8250_port.c

serial_port_out(port, UART_FCTR, fctr | UART_FCTR_TX);