1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/uvcvideo.h b/include/linux/uvcvideo.h
index f46a53f060d7..3b081862b9e8 100644
--- a/include/linux/uvcvideo.h
+++ b/include/linux/uvcvideo.h
@@ -58,7 +58,8 @@ struct uvc_xu_control_mapping {
 struct uvc_xu_control_query {
         __u8 unit;
         __u8 selector;
-        __u8 query;
+        __u8 query;             /* Video Class-Specific Request Code, */
+                                /* defined in linux/usb/video.h A.8.  */
         __u16 size;
         __u8 __user *data;
 };