From bfa5e927516ea50a4bb5e44e130d193da6a4fe6e Mon Sep 17 00:00:00 2001
From: Adrian Chadd <adrian@FreeBSD.org>
Date: Sat, 28 Jan 2012 22:24:59 +0000
Subject: [PATCH] Oops, commit a missing implementation change.

Whilst I'm here, add a comment about what would happen in this function
if hypothetically you had a radar pattern matching detector written.
---
 sys/dev/ath/ath_dfs/null/dfs_null.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sys/dev/ath/ath_dfs/null/dfs_null.c b/sys/dev/ath/ath_dfs/null/dfs_null.c
index 75574b4e4ac..f10b0109b2a 100644
--- a/sys/dev/ath/ath_dfs/null/dfs_null.c
+++ b/sys/dev/ath/ath_dfs/null/dfs_null.c
@@ -95,12 +95,19 @@ ath_dfs_detach(struct ath_softc *sc)
 /*
  * Enable radar check
  */
-void
+int
 ath_dfs_radar_enable(struct ath_softc *sc, struct ieee80211_channel *chan)
 {
 	/* Check if the current channel is radar-enabled */
 	if (! IEEE80211_IS_CHAN_DFS(chan))
-		return;
+		return (0);
+
+	/*
+	 * Enabling the radar parameters and setting sc->sc_dodfs = 1
+	 * would occur here.
+	 */
+
+	return (1);
 }
 
 /*