#ifdef HAVE_LIBUSB_1_0
SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn);
SR_PRIV int sr_usb_open(libusb_context *usb_ctx, struct sr_usb_dev_inst *usb);
+SR_PRIV int usb_source_add(struct sr_context *ctx, int timeout,
+ sr_receive_data_callback_t cb, void *cb_data);
+SR_PRIV int usb_source_remove(struct sr_context *ctx);
#endif
/*--- hardware/common/scpi.c ------------------------------------------------*/