taglinefilesource code
port4684drivers/char/serial.cif (!multi->port4)
port4686drivers/char/serial.cif ((inb(multi->port4) & multi->mask4) == multi->match4)
port41751drivers/char/serial.cret.port4 = multi->port4;
port41811drivers/char/serial.cif (multi->port4)
port41812drivers/char/serial.crelease_region(multi->port4,1);
port41813drivers/char/serial.cmulti->port4 = new_multi.port4;
port41816drivers/char/serial.cif (multi->port4)
port41817drivers/char/serial.crequest_region(multi->port4,1,"serial(multiport4)");
port494include/linux/serial.hint    port4;
port4178include/linux/serial.hint    port4;