taglinefilesource code
port4685drivers/char/serial.cif (!multi->port4)
port4687drivers/char/serial.cif ((inb(multi->port4) & multi->mask4) == multi->match4)
port41744drivers/char/serial.cret.port4 = multi->port4;
port41792drivers/char/serial.cmulti->port4 = new_multi.port4;
port494include/linux/serial.hint    port4;
port4175include/linux/serial.hint    port4;