+ if (size < 0x12 || usb_get_desc_dev_simple(dev, buf, size) < 0) {
+ return -1;
+ }
+ usb_get_descriptor(dev, DEVICE, 0, buf, size >= buf[0] ? buf[0] : size);
+
+ dev->bLength = buf[0];
+ dev->bDescriptorType = buf[1];
+ dev->bcdUSB = (u16) (buf[3] << 8 | buf[2]);
+ dev->bDeviceClass = buf[4];
+ dev->bDeviceSubClass = buf[5];
+ dev->bDeviceProtocoll = buf[6];
+ dev->idVendor = (u16) (buf[9] << 8) | (buf[8]);
+ dev->idProduct = (u16) (buf[11] << 8) | (buf[10]);
+ dev->bcdDevice = (u16) (buf[13] << 8) | (buf[12]);
+ dev->iManufacturer = buf[14];
+ dev->iProduct = buf[15];
+ dev->iSerialNumber = buf[16];
+ dev->bNumConfigurations = buf[17];
+
+ return 0;
+}