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>
        case 1:
                ht_info->mcs.rx_mask[0] = 0xff;
                break;
+       case 3:
        case 5:
        case 7:
        default:
 
 
        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;