1 files changed, 7 insertions, 14 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 928ef68ab40c..c0c3464d3a86 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1520,8 +1520,6 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
         struct ath_softc *sc = aphy->sc;
         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
         struct ath_vif *avp = (void *)vif->drv_priv;
-        bool bs_valid = false;
-        int i;
 
         ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
 
@@ -1535,26 +1533,21 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
         if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
             (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
             (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
+                /* 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);
                 ath9k_ps_restore(sc);
+                tasklet_kill(&sc->bcon_tasklet);
         }
 
         ath_beacon_return(sc, avp);
         sc->sc_flags &= ~SC_OP_BEACONS;
 
-        for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
-                if (sc->beacon.bslot[i] == vif) {
-                        printk(KERN_DEBUG "%s: vif had allocated beacon "
-                               "slot\n", __func__);
-                        sc->beacon.bslot[i] = NULL;
-                        sc->beacon.bslot_aphy[i] = NULL;
-                } else if (sc->beacon.bslot[i])
-                        bs_valid = true;
-        }
-        if (!bs_valid && (sc->sc_ah->imask & ATH9K_INT_SWBA)) {
-                /* Disable SWBA interrupt */
-                sc->sc_ah->imask &= ~ATH9K_INT_SWBA;
+        if (sc->nbcnvifs) {
+                /* Re-enable 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_ps_restore(sc);