ath9k: fix beacon restart on channel change

Restart the beacon timers only if the beacon
was already configured. Otherwise beacons timers
are restarted unnecessarily in unassociated state too.

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 0f1b62456141..a818e4fd56f5 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -285,7 +285,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
         ath9k_hw_set_interrupts(ah, ah->imask);
 
         if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
-                ath_beacon_config(sc, NULL);
+                if (sc->sc_flags & SC_OP_BEACONS)
+                        ath_beacon_config(sc, NULL);
                 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
                 ath_start_ani(common);
         }