ath9k: make use of conf_is_ht*() in the rest of the driver

Use shiny new conf_is_ht*() helpers, we can later remove ht.enabled if
desired.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/main.c

@@ -2132,17 +2132,16 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 			(curchan->band == IEEE80211_BAND_2GHZ) ?
 			CHANNEL_G : CHANNEL_A;
 
-		if (conf->ht.enabled) {
-			if (conf->ht.channel_type == NL80211_CHAN_HT40PLUS ||
-			    conf->ht.channel_type == NL80211_CHAN_HT40MINUS)
+		if (conf_is_ht(conf)) {
+			if (conf_is_ht40(conf))
 				sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
 
 			sc->sc_ah->ah_channels[pos].chanmode =
 				ath_get_extchanmode(sc, curchan,
 						    conf->ht.channel_type);
 		}
 
-		ath_update_chainmask(sc, conf->ht.enabled);
+		ath_update_chainmask(sc, conf_is_ht(conf));
 
 		if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) {
 			DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n");

drivers/net/wireless/ath9k/rc.c

@@ -875,7 +875,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
 	 * above conditions.
 	 */
 	if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) &&
-	    (sc->hw->conf.ht.enabled)) {
+	    (conf_is_ht(&sc->hw->conf))) {
 		u8 dot11rate = rate_table->info[rix].dot11rate;
 		u8 phy = rate_table->info[rix].phy;
 		if (i == 4 &&
@@ -1511,7 +1511,7 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
 			tx_info, &is_probe, false);
 
 	/* Check if aggregation has to be enabled for this tid */
-	if (hw->conf.ht.enabled) {
+	if (conf_is_ht(&hw->conf)) {
 		if (ieee80211_is_data_qos(fc)) {
 			u8 *qc, tid;
 			struct ath_node *an;

drivers/net/wireless/ath9k/xmit.c

@@ -1690,7 +1690,7 @@ static int ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
 	(sc->sc_flags & SC_OP_PREAMBLE_SHORT) ?
 		(bf->bf_state.bf_type |= BUF_SHORT_PREAMBLE) :
 		(bf->bf_state.bf_type &= ~BUF_SHORT_PREAMBLE);
-	(sc->hw->conf.ht.enabled && !is_pae(skb) &&
+	(conf_is_ht(&sc->hw->conf) && !is_pae(skb) &&
 	 (tx_info->flags & IEEE80211_TX_CTL_AMPDU)) ?
 		(bf->bf_state.bf_type |= BUF_HT) :
 		(bf->bf_state.bf_type &= ~BUF_HT);