Commit eb2599ca authored by Sujith's avatar Sujith Committed by John W. Linville
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ath9k: Fix MCS rates registration bug for AR9285



AR9285 based devices support only single stream MCS rates.
This patch fixes a bug where dual stream stream rates were
also being registered.

Signed-off-by: default avatarSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 27abe060
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+18 −5
Original line number Diff line number Diff line
@@ -854,7 +854,8 @@ static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
	}
}

static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)
static void setup_ht_cap(struct ath_softc *sc,
			 struct ieee80211_sta_ht_cap *ht_info)
{
#define	ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3	/* 2 ^ 16 */
#define	ATH9K_HT_CAP_MPDUDENSITY_8 0x6		/* 8 usec */
@@ -867,10 +868,22 @@ static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)

	ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
	ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;

	/* set up supported mcs set */
	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));

	switch(sc->sc_rx_chainmask) {
	case 1:
		ht_info->mcs.rx_mask[0] = 0xff;
		break;
	case 5:
	case 7:
	default:
		ht_info->mcs.rx_mask[0] = 0xff;
		ht_info->mcs.rx_mask[1] = 0xff;
		break;
	}

	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
}

@@ -1549,9 +1562,9 @@ int ath_attach(u16 devid, struct ath_softc *sc)
	hw->rate_control_algorithm = "ath9k_rate_control";

	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
		setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
		setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
		if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
			setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
			setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
	}

	hw->wiphy->bands[IEEE80211_BAND_2GHZ] =	&sc->sbands[IEEE80211_BAND_2GHZ];