From e1ab183c5e3650ba72ea15270c4b36b97ec959e9 Mon Sep 17 00:00:00 2001
From: Adrian Chadd <adrian@FreeBSD.org>
Date: Mon, 27 Jun 2011 05:57:14 +0000
Subject: [PATCH] Print out a big warning if DFS can't find a channel to use.
 This way people debugging DFS won't be surprised when their AP stops talking.

---
 sys/net80211/ieee80211_dfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/net80211/ieee80211_dfs.c b/sys/net80211/ieee80211_dfs.c
index e15445d6a5ff..19e552d31cfe 100644
--- a/sys/net80211/ieee80211_dfs.c
+++ b/sys/net80211/ieee80211_dfs.c
@@ -320,6 +320,8 @@ ieee80211_dfs_notify_radar(struct ieee80211com *ic, struct ieee80211_channel *ch
 			 * on the NOL to expire.
 			 */
 			/*XXX*/
+			if_printf(ic->ic_ifp, "%s: No free channels; waiting for entry "
+			    "on NOL to expire\n", __func__);
 		}
 	} else {
 		/*