+static void ath9k_reclaim_beacon(struct ath_softc *sc,
+ struct ieee80211_vif *vif)
+{
+ struct ath_vif *avp = (void *)vif->drv_priv;
+
+ /* Disable SWBA interrupt */
+ sc->sc_ah->imask &= ~ATH9K_INT_SWBA;
+ ath9k_ps_wakeup(sc);
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+ tasklet_kill(&sc->bcon_tasklet);
+ ath9k_ps_restore(sc);
+
+ ath_beacon_return(sc, avp);
+ sc->sc_flags &= ~SC_OP_BEACONS;
+
+ if (sc->nbcnvifs > 0) {
+ /* Re-enable beaconing */
+ sc->sc_ah->imask |= ATH9K_INT_SWBA;
+ ath9k_ps_wakeup(sc);
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
+ ath9k_ps_restore(sc);
+ }
+}
+
+static int ath9k_change_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum nl80211_iftype new_type,
+ bool p2p)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ int ret = 0;
+
+ ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
+ mutex_lock(&sc->mutex);
+
+ switch (new_type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_ADHOC:
+ if (sc->nbcnvifs >= ATH_BCBUF) {
+ ath_err(common, "No beacon slot available\n");
+ ret = -ENOBUFS;
+ goto out;
+ }
+ break;
+ case NL80211_IFTYPE_STATION:
+ /* Stop ANI */
+ sc->sc_flags &= ~SC_OP_ANI_RUN;
+ del_timer_sync(&common->ani.timer);
+ if ((vif->type == NL80211_IFTYPE_AP) ||
+ (vif->type == NL80211_IFTYPE_ADHOC))
+ ath9k_reclaim_beacon(sc, vif);
+ break;
+ default:
+ ath_err(common, "Interface type %d not yet supported\n",
+ vif->type);
+ ret = -ENOTSUPP;
+ goto out;
+ }
+ vif->type = new_type;
+ vif->p2p = p2p;
+
+out:
+ mutex_unlock(&sc->mutex);
+ return ret;
+}
+