struct libusb_device_handle *devh;
if (libusb_open(dev, &devh) != 0)
return SR_ERR;
#endif
n = libusb_get_port_numbers(dev, port_numbers, sizeof(port_numbers));
struct libusb_device_handle *devh;
if (libusb_open(dev, &devh) != 0)
return SR_ERR;
#endif
n = libusb_get_port_numbers(dev, port_numbers, sizeof(port_numbers));