static int gb_interface_route_create()

in interface.c [126:171]

• 33 lines of code
• 4 McCabe index (conditional complexity)

static int gb_interface_route_create(struct gb_interface *intf)
{
	struct gb_svc *svc = intf->hd->svc;
	u8 intf_id = intf->interface_id;
	u8 device_id;
	int ret;

	/* Allocate an interface device id. */
	ret = ida_simple_get(&svc->device_id_map,
			     GB_SVC_DEVICE_ID_MIN, GB_SVC_DEVICE_ID_MAX + 1,
			     GFP_KERNEL);
	if (ret < 0) {
		dev_err(&intf->dev, "failed to allocate device id: %d\n", ret);
		return ret;
	}
	device_id = ret;

	ret = gb_svc_intf_device_id(svc, intf_id, device_id);
	if (ret) {
		dev_err(&intf->dev, "failed to set device id %u: %d\n",
			device_id, ret);
		goto err_ida_remove;
	}

	/* FIXME: Hard-coded AP device id. */
	ret = gb_svc_route_create(svc, svc->ap_intf_id, GB_SVC_DEVICE_ID_AP,
				  intf_id, device_id);
	if (ret) {
		dev_err(&intf->dev, "failed to create route: %d\n", ret);
		goto err_svc_id_free;
	}

	intf->device_id = device_id;

	return 0;

err_svc_id_free:
	/*
	 * XXX Should we tell SVC that this id doesn't belong to interface
	 * XXX anymore.
	 */
err_ida_remove:
	ida_simple_remove(&svc->device_id_map, device_id);

	return ret;
}