+static int scpi_usbtmc_libusb_connection_id(struct sr_scpi_dev_inst *scpi,
+ char **connection_id)
+{
+ struct scpi_usbtmc_libusb *uscpi = scpi->priv;
+ struct sr_usb_dev_inst *usb = uscpi->usb;
+
+ *connection_id = g_strdup_printf("%s/%" PRIu8 ".%" PRIu8 "",
+ scpi->prefix, usb->bus, usb->address);
+
+ return SR_OK;
+}
+