Symbol: serial8250_TIOCM_to_MCR
drivers/tty/serial/8250/8250.h
303
mctrl |= serial8250_TIOCM_to_MCR(mctrl_gpio);
drivers/tty/serial/8250/8250_port.c
1922
mcr = serial8250_TIOCM_to_MCR(mctrl);