+ return ret;
+}
+
+/** @private */
+SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status,
+ const char *vendor, const char *model, const char *version)
+{
+ struct sr_dev_inst *sdi;
+
+ if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) {
+ sr_err("Device instance malloc failed.");
+ return NULL;
+ }
+
+ sdi->driver = NULL;
+ sdi->index = index;
+ sdi->status = status;
+ sdi->inst_type = -1;
+ sdi->vendor = vendor ? g_strdup(vendor) : NULL;
+ sdi->model = model ? g_strdup(model) : NULL;
+ sdi->version = version ? g_strdup(version) : NULL;
+ sdi->probes = NULL;
+ sdi->conn = NULL;
+ sdi->priv = NULL;
+
+ return sdi;
+}
+
+/** @private */
+SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi)
+{
+ struct sr_probe *probe;
+ GSList *l;
+
+ for (l = sdi->probes; l; l = l->next) {
+ probe = l->data;
+ g_free(probe->name);
+ g_free(probe);
+ }
+
+ g_free(sdi->priv);
+ g_free(sdi->vendor);
+ g_free(sdi->model);
+ g_free(sdi->version);
+ g_free(sdi);
+}
+
+#ifdef HAVE_LIBUSB_1_0
+
+/** @private */
+SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
+ uint8_t address, struct libusb_device_handle *hdl)
+{
+ struct sr_usb_dev_inst *udi;
+
+ if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) {
+ sr_err("USB device instance malloc failed.");
+ return NULL;
+ }
+
+ udi->bus = bus;
+ udi->address = address;
+ udi->devhdl = hdl;
+
+ return udi;
+}
+
+/** @private */
+SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb)
+{
+ (void)usb;
+
+ /* Nothing to do for this device instance type. */
+}
+
+#endif
+
+/**
+ * @private
+ *
+ * Both parameters are copied to newly allocated strings, and freed
+ * automatically by sr_serial_dev_inst_free().
+ *
+ * @param pathname OS-specific serial port specification. Examples:
+ * "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1".
+ * @param serialcomm A serial communication parameters string, in the form
+ * of <speed>/<data bits><parity><stopbits>, for example
+ * "9600/8n1" or "600/7o2". This is an optional parameter;
+ * it may be filled in later.
+ *
+ * @return A pointer to a newly initialized struct sr_serial_dev_inst,
+ * or NULL on error.
+ */
+SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port,
+ const char *serialcomm)
+{
+ struct sr_serial_dev_inst *serial;
+
+ if (!port) {
+ sr_err("Serial port required.");
+ return NULL;
+ }
+
+ if (!(serial = g_try_malloc0(sizeof(struct sr_serial_dev_inst)))) {
+ sr_err("Serial device instance malloc failed.");
+ return NULL;
+ }
+
+ serial->port = g_strdup(port);
+ if (serialcomm)
+ serial->serialcomm = g_strdup(serialcomm);
+ serial->fd = -1;
+
+ return serial;
+}
+
+/** @private */
+SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial)
+{
+ g_free(serial->port);
+ g_free(serial->serialcomm);
+ g_free(serial);
+}
+
+SR_API GSList *sr_dev_inst_list(const struct sr_dev_driver *driver)
+{
+ if (driver && driver->dev_list)
+ return driver->dev_list();
+ else
+ return NULL;
+}
+
+SR_API int sr_dev_inst_clear(const struct sr_dev_driver *driver)
+{
+ if (driver && driver->dev_clear)
+ return driver->dev_clear();
+ else
+ return SR_OK;