ath9k_hw: remove aggregation protection mode

when aggregation protection mode is enabled the hardware needs
to send RTS/CTS for each HT frame. Currently its disabled so
remove the unused call backs.
Signed-off-by: NMohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9002_mac.c

@@ -415,15 +415,6 @@ static void ar9002_hw_clr11n_aggr(struct ath_hw *ah, void *ds)
 	ads->ds_ctl1 &= (~AR_IsAggr & ~AR_MoreAggr);
 }
 
-static void ar9002_hw_set11n_burstduration(struct ath_hw *ah, void *ds,
-					   u32 burstDuration)
-{
-	struct ar5416_desc *ads = AR5416DESC(ds);
-
-	ads->ds_ctl2 &= ~AR_BurstDur;
-	ads->ds_ctl2 |= SM(burstDuration, AR_BurstDur);
-}
-
 void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
 			  u32 size, u32 flags)
 {
@@ -456,6 +447,5 @@ void ar9002_hw_attach_mac_ops(struct ath_hw *ah)
 	ops->set11n_aggr_middle = ar9002_hw_set11n_aggr_middle;
 	ops->set11n_aggr_last = ar9002_hw_set11n_aggr_last;
 	ops->clr11n_aggr = ar9002_hw_clr11n_aggr;
-	ops->set11n_burstduration = ar9002_hw_set11n_burstduration;
 	ops->set_clrdmask = ar9002_hw_set_clrdmask;
 }

drivers/net/wireless/ath/ath9k/ar9003_mac.c

@@ -484,16 +484,6 @@ static void ar9003_hw_clr11n_aggr(struct ath_hw *ah, void *ds)
 	ads->ctl12 &= (~AR_IsAggr & ~AR_MoreAggr);
 }
 
-static void ar9003_hw_set11n_burstduration(struct ath_hw *ah, void *ds,
-					   u32 burstDuration)
-{
-	struct ar9003_txc *ads = (struct ar9003_txc *) ds;
-
-	ads->ctl13 &= ~AR_BurstDur;
-	ads->ctl13 |= SM(burstDuration, AR_BurstDur);
-
-}
-
 void ar9003_hw_set_paprd_txdesc(struct ath_hw *ah, void *ds, u8 chains)
 {
 	struct ar9003_txc *ads = ds;
@@ -518,7 +508,6 @@ void ar9003_hw_attach_mac_ops(struct ath_hw *hw)
 	ops->set11n_aggr_middle = ar9003_hw_set11n_aggr_middle;
 	ops->set11n_aggr_last = ar9003_hw_set11n_aggr_last;
 	ops->clr11n_aggr = ar9003_hw_clr11n_aggr;
-	ops->set11n_burstduration = ar9003_hw_set11n_burstduration;
 	ops->set_clrdmask = ar9003_hw_set_clrdmask;
 }
 

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

@@ -62,7 +62,6 @@ struct ath_node;
 #define	ATH_TXQ_SETUP(sc, i)        ((sc)->tx.txqsetup & (1<<i))
 
 struct ath_config {
-	u32 ath_aggr_prot;
 	u16 txpowlimit;
 	u8 cabqReadytime;
 };

drivers/net/wireless/ath/ath9k/hw-ops.h

@@ -116,12 +116,6 @@ static inline void ath9k_hw_clr11n_aggr(struct ath_hw *ah, void *ds)
 	ath9k_hw_ops(ah)->clr11n_aggr(ah, ds);
 }
 
-static inline void ath9k_hw_set11n_burstduration(struct ath_hw *ah, void *ds,
-						 u32 burstDuration)
-{
-	ath9k_hw_ops(ah)->set11n_burstduration(ah, ds, burstDuration);
-}
-
 static inline void ath9k_hw_set_clrdmask(struct ath_hw *ah, void *ds, bool val)
 {
 	ath9k_hw_ops(ah)->set_clrdmask(ah, ds, val);

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

@@ -628,8 +628,6 @@ struct ath_hw_ops {
 				   u32 numDelims);
 	void (*set11n_aggr_last)(struct ath_hw *ah, void *ds);
 	void (*clr11n_aggr)(struct ath_hw *ah, void *ds);
-	void (*set11n_burstduration)(struct ath_hw *ah, void *ds,
-				     u32 burstDuration);
 	void (*set_clrdmask)(struct ath_hw *ah, void *ds, bool val);
 };
 

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

@@ -2039,9 +2039,6 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
 	if (changed & BSS_CHANGED_BSSID) {
 		ath9k_config_bss(sc, vif);
 
-		/* Set aggregation protection mode parameters */
-		sc->config.ath_aggr_prot = 0;
-
 		ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
 			common->curbssid, common->curaid);
 	}

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

@@ -1663,8 +1663,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len)
 		rix = rates[i].idx;
 		series[i].Tries = rates[i].count;
 
-		if ((sc->config.ath_aggr_prot && bf_isaggr(bf)) ||
-		    (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS)) {
+		    if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 			series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
 			flags |= ATH9K_TXDESC_RTSENA;
 		} else if (rates[i].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
@@ -1733,8 +1732,6 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len)
 				     !is_pspoll, ctsrate,
 				     0, series, 4, flags);
 
-	if (sc->config.ath_aggr_prot && flags)
-		ath9k_hw_set11n_burstduration(sc->sc_ah, bf->bf_desc, 8192);
 }
 
 static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,