+static ssize_t show_modalias(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_interface *intf;
+ struct usb_device *udev;
+ struct usb_host_interface *alt;
+
+ intf = to_usb_interface(dev);
+ udev = interface_to_usbdev(intf);
+ alt = intf->cur_altsetting;
+
+ return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X"
+ "ic%02Xisc%02Xip%02X\n",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct),
+ le16_to_cpu(udev->descriptor.bcdDevice),
+ udev->descriptor.bDeviceClass,
+ udev->descriptor.bDeviceSubClass,
+ udev->descriptor.bDeviceProtocol,
+ alt->desc.bInterfaceClass,
+ alt->desc.bInterfaceSubClass,
+ alt->desc.bInterfaceProtocol);
+}
+static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);