static int __init capinc_tty_init()

in capi/capi.c [1257:1300]

• 40 lines of code
• 6 McCabe index (conditional complexity)

static int __init capinc_tty_init(void)
{
	struct tty_driver *drv;
	int err;

	if (capi_ttyminors > CAPINC_MAX_PORTS)
		capi_ttyminors = CAPINC_MAX_PORTS;
	if (capi_ttyminors <= 0)
		capi_ttyminors = CAPINC_NR_PORTS;

	capiminors = kcalloc(capi_ttyminors, sizeof(struct capiminor *),
			     GFP_KERNEL);
	if (!capiminors)
		return -ENOMEM;

	drv = tty_alloc_driver(capi_ttyminors, TTY_DRIVER_REAL_RAW |
			TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV);
	if (IS_ERR(drv)) {
		kfree(capiminors);
		return PTR_ERR(drv);
	}
	drv->driver_name = "capi_nc";
	drv->name = "capi!";
	drv->major = 0;
	drv->minor_start = 0;
	drv->type = TTY_DRIVER_TYPE_SERIAL;
	drv->subtype = SERIAL_TYPE_NORMAL;
	drv->init_termios = tty_std_termios;
	drv->init_termios.c_iflag = ICRNL;
	drv->init_termios.c_oflag = OPOST | ONLCR;
	drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
	drv->init_termios.c_lflag = 0;
	tty_set_operations(drv, &capinc_ops);

	err = tty_register_driver(drv);
	if (err) {
		tty_driver_kref_put(drv);
		kfree(capiminors);
		printk(KERN_ERR "Couldn't register capi_nc driver\n");
		return err;
	}
	capinc_tty_driver = drv;
	return 0;
}