sdi->connection_id = g_strdup(connection_id);
sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(usbdev),
libusb_get_device_address(usbdev), NULL);
sdi->connection_id = g_strdup(connection_id);
sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(usbdev),
libusb_get_device_address(usbdev), NULL);