From 58facf3359453584a480f6b640162c1310cabc04 Mon Sep 17 00:00:00 2001
From: anton <anton@openbsd.org>
Date: Thu, 2 Sep 2021 15:15:12 +0000
Subject: [PATCH] Explain in a comment why two wscons_keydesc structures are
 needed.

---
 sys/dev/usb/ucc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/dev/usb/ucc.c b/sys/dev/usb/ucc.c
index b5266235975..0c87925bc53 100644
--- a/sys/dev/usb/ucc.c
+++ b/sys/dev/usb/ucc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ucc.c,v 1.23 2021/09/01 10:41:39 anton Exp $	*/
+/*	$OpenBSD: ucc.c,v 1.24 2021/09/02 15:15:12 anton Exp $	*/
 
 /*
  * Copyright (c) 2021 Anton Lindqvist <anton@openbsd.org>
@@ -82,6 +82,10 @@ struct ucc_softc {
 		u_char	sc_last_raw;
 	};
 
+	/*
+	 * Only the first element is populated whereas the second remains zeroed
+	 * out since such trailing sentinel is required by wskbd_load_keymap().
+	 */
 	struct wscons_keydesc	  sc_keydesc[2];
 	struct wskbd_mapdata	  sc_keymap;
 };
-- 
2.20.1