--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -1044,6 +1044,7 @@ static void ath9k_remove_interface(struc
+ ath9k_calculate_summary_state(hw, NULL);
+
+ mutex_unlock(&sc->mutex);
++ ath9k_config(hw, IEEE80211_CONF_CHANGE_IDLE);
+ ath9k_ps_restore(sc);
+ }
+
+@@ -1096,7 +1097,8 @@ int ath9k_config(struct ieee80211_hw *hw
+ mutex_lock(&sc->mutex);
+
+ if (changed & IEEE80211_CONF_CHANGE_IDLE) {
+- sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
++ sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE) &&
++ !sc->nvifs;
+ if (sc->ps_idle) {
+ ath_cancel_work(sc);
+ ath9k_stop_btcoex(sc);