ath9k: disable beaconing before stopping beacon queue

Beaconing should be disabled before stopping beacon queue.
Not doing so could queue up beacons in hw that causes
failure to stop Tx DMA, due to pending frames in hw
and also unnecessary beacon tasklet schedule.

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

1 files changed, 14 insertions, 21 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 8469d7c8744a..31f0fad72391 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1293,24 +1293,10 @@ static void ath9k_reclaim_beacon(struct ath_softc *sc,
 {
         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);
-
+        ath9k_set_beaconing_status(sc, false);
         ath_beacon_return(sc, avp);
+        ath9k_set_beaconing_status(sc, true);
         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 void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
@@ -1438,16 +1424,17 @@ static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw,
 
         if (ath9k_uses_beacons(vif->type)) {
                 int error;
-                ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
                 /* This may fail because upper levels do not have beacons
                  * properly configured yet.  That's OK, we assume it
                  * will be properly configured and then we will be notified
                  * in the info_changed method and set up beacons properly
                  * there.
                  */
+                ath9k_set_beaconing_status(sc, false);
                 error = ath_beacon_alloc(sc, vif);
                 if (!error)
                         ath_beacon_config(sc, vif);
+                ath9k_set_beaconing_status(sc, true);
         }
 }
 
@@ -1920,10 +1907,11 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
         /* Enable transmission of beacons (AP, IBSS, MESH) */
         if ((changed & BSS_CHANGED_BEACON) ||
             ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
-                ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+                ath9k_set_beaconing_status(sc, false);
                 error = ath_beacon_alloc(sc, vif);
                 if (!error)
                         ath_beacon_config(sc, vif);
+                ath9k_set_beaconing_status(sc, true);
         }
 
         if (changed & BSS_CHANGED_ERP_SLOT) {
@@ -1946,8 +1934,12 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
         }
 
         /* Disable transmission of beacons */
-        if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
-                ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+        if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
+            !bss_conf->enable_beacon) {
+                ath9k_set_beaconing_status(sc, false);
+                avp->is_bslot_active = false;
+                ath9k_set_beaconing_status(sc, true);
+        }
 
         if (changed & BSS_CHANGED_BEACON_INT) {
                 cur_conf->beacon_interval = bss_conf->beacon_int;
@@ -1957,10 +1949,11 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
                  */
                 if (vif->type == NL80211_IFTYPE_AP) {
                         sc->sc_flags |= SC_OP_TSF_RESET;
-                        ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+                        ath9k_set_beaconing_status(sc, false);
                         error = ath_beacon_alloc(sc, vif);
                         if (!error)
                                 ath_beacon_config(sc, vif);
+                        ath9k_set_beaconing_status(sc, true);
                 } else {
                         ath_beacon_config(sc, vif);
                 }