Symbol: UCOM_UNIT_MAX
sys/dev/usb/serial/usb_serial.c
199
ucom_unrhdr = new_unrhdr(0, UCOM_UNIT_MAX - 1, NULL);
sys/dev/usb/serial/usb_serial.c
248
if (unit < 0 || unit >= UCOM_UNIT_MAX || ucom_unrhdr == NULL) {