};
int __attribute__ ((visibility ("hidden"))) xpcu_deviceinfo(struct xpcu_s *xpcu, unsigned char *buf);
-int __attribute__ ((visibility ("hidden"))) xpcu_claim(struct xpcu_s *xpcu, int claim);
int __attribute__ ((visibility ("hidden"))) xpcu_transfer(struct xpcu_s *xpcu, struct usb_transfer *ut);
+void __attribute__ ((visibility ("hidden"))) xpcu_set_interface(struct xpcu_s *xpcu, struct usb_set_interface *usi);
struct xpcu_s __attribute__ ((visibility ("hidden"))) *xpcu_open(void);
+void __attribute__ ((visibility ("hidden"))) xpcu_close(struct xpcu_s *xpcu);