static int gb_interface_activate_operation()

in interface.c [873:908]

• 30 lines of code
• 5 McCabe index (conditional complexity)

static int gb_interface_activate_operation(struct gb_interface *intf,
					   enum gb_interface_type *intf_type)
{
	struct gb_svc *svc = intf->hd->svc;
	u8 type;
	int ret;

	dev_dbg(&intf->dev, "%s\n", __func__);

	ret = gb_svc_intf_activate(svc, intf->interface_id, &type);
	if (ret) {
		dev_err(&intf->dev, "failed to activate: %d\n", ret);
		return ret;
	}

	switch (type) {
	case GB_SVC_INTF_TYPE_DUMMY:
		*intf_type = GB_INTERFACE_TYPE_DUMMY;
		/* FIXME: handle as an error for now */
		return -ENODEV;
	case GB_SVC_INTF_TYPE_UNIPRO:
		*intf_type = GB_INTERFACE_TYPE_UNIPRO;
		dev_err(&intf->dev, "interface type UniPro not supported\n");
		/* FIXME: handle as an error for now */
		return -ENODEV;
	case GB_SVC_INTF_TYPE_GREYBUS:
		*intf_type = GB_INTERFACE_TYPE_GREYBUS;
		break;
	default:
		dev_err(&intf->dev, "unknown interface type: %u\n", type);
		*intf_type = GB_INTERFACE_TYPE_UNKNOWN;
		return -ENODEV;
	}

	return 0;
}