ath9k: Remove unnecessary tbtt assignment

The next_tbtt variable in the scheduler is needed only
for GO/AP mode operation and is always read from the
NEXT_TBTT_TIMER in the HW. There is no need to store
the timestamp for received beacons.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -454,7 +454,7 @@ void ath9k_p2p_ps_timer(void *priv);
 void ath9k_chanctx_wake_queues(struct ath_softc *sc);
 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx);
 
-void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, u32 ts,
+void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 				enum ath_chanctx_event ev);
 void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 				enum ath_chanctx_event ev);
@@ -483,7 +483,7 @@ static inline void ath9k_offchannel_init(struct ath_softc *sc)
 static inline void ath9k_deinit_channel_context(struct ath_softc *sc)
 {
 }
-static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, u32 ts,
+static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 					      enum ath_chanctx_event ev)
 {
 }

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

@@ -396,7 +396,6 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
 			break;
 		}
 
-
 		/*
 		 * Clear the extend_absence flag if it had been
 		 * set during the previous beacon transmission,
@@ -416,6 +415,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
 			avp->noa_duration = 0;
 			sc->sched.extend_absence = true;
 		}
+
 		/* Prevent wrap-around issues */
 		if (avp->noa_duration && tsf_time - avp->noa_start > BIT(30))
 			avp->noa_duration = 0;
@@ -606,10 +606,9 @@ void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 		ath_chanctx_event(sc, NULL, ev);
 }
 
-void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, u32 ts,
+void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 				enum ath_chanctx_event ev)
 {
-	sc->sched.next_tbtt = ts;
 	ath_chanctx_event(sc, NULL, ev);
 }
 

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

@@ -909,7 +909,7 @@ static int ath9k_rx_skb_preprocess(struct ath_softc *sc,
 
 	if (ath9k_is_chanctx_enabled()) {
 		if (rx_stats->is_mybeacon)
-			ath_chanctx_beacon_recv_ev(sc, rx_stats->rs_tstamp,
+			ath_chanctx_beacon_recv_ev(sc,
 					   ATH_CHANCTX_EVENT_BEACON_RECEIVED);
 	}