+SR_PRIV int lascar_get_config(libusb_device_handle *dev_hdl,
+ unsigned char *configblock, int *configlen);
+SR_PRIV int lascar_el_usb_handle_events(int fd, int revents, void *cb_data);
+SR_PRIV void lascar_el_usb_receive_transfer(struct libusb_transfer *transfer);
+SR_PRIV int lascar_start_logging(const struct sr_dev_inst *sdi);
+SR_PRIV int lascar_stop_logging(const struct sr_dev_inst *sdi);
+SR_PRIV int lascar_is_logging(const struct sr_dev_inst *sdi);
+SR_PRIV int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);