/* there are a variety of names for the serial device */
if ((fh = fopen("/proc/tty/driver/serial", "r")) == NULL &&
(fh = fopen("/proc/tty/driver/ttyS", "r")) == NULL) {
/* there are a variety of names for the serial device */
if ((fh = fopen("/proc/tty/driver/serial", "r")) == NULL &&
(fh = fopen("/proc/tty/driver/ttyS", "r")) == NULL) {