ath9k_htc: Enable ANI in associated state only

While scanning, ANI is triggered unnecessarily where sta is in
unassociated state. And cancelling ani work in ath9k_htc_stop
is not required.
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/htc_drv_main.c

@@ -1239,7 +1239,6 @@ static void ath9k_htc_stop(struct ieee80211_hw *hw)
 
 	/* Cancel all the running timers/work .. */
 	cancel_work_sync(&priv->ps_work);
-	cancel_delayed_work_sync(&priv->ath9k_ani_work);
 	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
 	ath9k_led_stop_brightness(priv);
 
@@ -1787,6 +1786,7 @@ static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
 	priv->op_flags |= OP_SCANNING;
 	spin_unlock_bh(&priv->beacon_lock);
 	cancel_work_sync(&priv->ps_work);
+	if (priv->op_flags & OP_ASSOCIATED)
 		cancel_delayed_work_sync(&priv->ath9k_ani_work);
 	mutex_unlock(&priv->mutex);
 }
@@ -1801,9 +1801,10 @@ static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
 	priv->op_flags &= ~OP_SCANNING;
 	spin_unlock_bh(&priv->beacon_lock);
 	priv->op_flags |= OP_FULL_RESET;
-	if (priv->op_flags & OP_ASSOCIATED)
+	if (priv->op_flags & OP_ASSOCIATED) {
 		ath9k_htc_beacon_config(priv, priv->vif);
 		ath_start_ani(priv);
+	}
 	ath9k_htc_ps_restore(priv);
 	mutex_unlock(&priv->mutex);
 }