int opendev2(int device_index, struct sr_device_instance **sdi,
libusb_device *dev, struct libusb_device_descriptor *des,
int *skip, uint16_t vid, uint16_t pid, int interface);
int opendev3(struct sr_device_instance **sdi, libusb_device *dev,
struct libusb_device_descriptor *des,
uint16_t vid, uint16_t pid, int interface);
int opendev2(int device_index, struct sr_device_instance **sdi,
libusb_device *dev, struct libusb_device_descriptor *des,
int *skip, uint16_t vid, uint16_t pid, int interface);
int opendev3(struct sr_device_instance **sdi, libusb_device *dev,
struct libusb_device_descriptor *des,
uint16_t vid, uint16_t pid, int interface);