static int gb_control_get_version()

in control.c [18:53]

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

static int gb_control_get_version(struct gb_control *control)
{
	struct gb_interface *intf = control->connection->intf;
	struct gb_control_version_request request;
	struct gb_control_version_response response;
	int ret;

	request.major = GB_CONTROL_VERSION_MAJOR;
	request.minor = GB_CONTROL_VERSION_MINOR;

	ret = gb_operation_sync(control->connection,
				GB_CONTROL_TYPE_VERSION,
				&request, sizeof(request), &response,
				sizeof(response));
	if (ret) {
		dev_err(&intf->dev,
			"failed to get control-protocol version: %d\n",
			ret);
		return ret;
	}

	if (response.major > request.major) {
		dev_err(&intf->dev,
			"unsupported major control-protocol version (%u > %u)\n",
			response.major, request.major);
		return -ENOTSUPP;
	}

	control->protocol_major = response.major;
	control->protocol_minor = response.minor;

	dev_dbg(&intf->dev, "%s - %u.%u\n", __func__, response.major,
		response.minor);

	return 0;
}