diff --git a/include/linux/usb.h b/include/linux/usb.h
index 85ee9be9361ec9825dfca2d11c4931b465628aa9..88079fd602350bf8fed46f9c12f8b73063a1a2aa 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -418,6 +418,8 @@ struct usb_tt;
  * @autosuspend_disabled: autosuspend disabled by the user
  * @autoresume_disabled: autoresume disabled by the user
  * @skip_sys_resume: skip the next system resume
+ * @wusb_dev: if this is a Wireless USB device, link to the WUSB
+ *	specific data for the device.
  *
  * Notes:
  * Usbcore drivers should not set usbdev->state directly.  Instead use