ath9k: Handle chainmask for A9280

The default chainmask for AR9280 is 3, so handle that when setting
the supported MCS rates. Also, check for the HW supported chainmask
when choosing single/dual stream.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 8e1528d487b5..eb557add6567 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1359,7 +1359,7 @@ static void ath_rc_init(struct ath_softc *sc,
 
         if (sta->ht_cap.ht_supported) {
                 ath_rc_priv->ht_cap = WLAN_RC_HT_FLAG;
-                if (sc->sc_tx_chainmask != 1)
+                if (sc->sc_ah->ah_caps.tx_chainmask != 1)
                         ath_rc_priv->ht_cap |= WLAN_RC_DS_FLAG;
                 if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
                         ath_rc_priv->ht_cap |= WLAN_RC_40_FLAG;