tty_create
status_t (*tty_create)(tty_service_func serviceFunction, struct tty *master,
status = gTTYModule->tty_create(pc_serial_service, NULL, &fMasterTTY);
status = gTTYModule->tty_create(pc_serial_service, fMasterTTY, &fSlaveTTY);
status = gTTYModule->tty_create(usb_serial_service, NULL, &fMasterTTY);
status = gTTYModule->tty_create(usb_serial_service, fMasterTTY, &fSlaveTTY);
status = gTTYModule->tty_create(master_service, NULL, &gMasterTTYs[index]);
status = gTTYModule->tty_create(slave_service, gMasterTTYs[index], &gSlaveTTYs[index]);
&tty_create,
extern status_t tty_create(tty_service_func func, struct tty *masterTTY,