ath9k: Fix bug in rate table management

The proper rate table wouldn't be used if a disassoc
happens and a new attempt is made to associate using
wpa_supplicant. This patch fixes it by storing the rate
table to be used on association.

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

diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index ca8ed7d..726d0a3 100644 (file)
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -702,6 +702,7 @@ struct ath_softc {
        /* Rate */
        struct ieee80211_rate rates[IEEE80211_NUM_BANDS][ATH_RATE_MAX];
        struct ath_rate_table *hw_rate_table[ATH9K_MODE_MAX];
+       struct ath_rate_table *cur_rate_table;
        u8 sc_protrix;
 
        /* Channel, Band */

diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 76acd2b..8eec667 100644 (file)
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -817,7 +817,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
        struct ath_rate_table *rate_table;
        struct ieee80211_tx_rate *rates = tx_info->control.rates;
 
-       rate_table = sc->hw_rate_table[sc->sc_curmode];
+       rate_table = sc->cur_rate_table;
        rix = ath_rc_ratefind_ht(sc, ath_rc_priv, rate_table, 1,
                                 is_probe, is_retry);
        nrix = rix;
@@ -877,7 +877,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
        if ((sc->sc_curmode == ATH9K_MODE_11NG_HT20) ||
            (sc->sc_curmode == ATH9K_MODE_11NG_HT40PLUS) ||
            (sc->sc_curmode == ATH9K_MODE_11NG_HT40MINUS)) {
-               u8  dot11rate = rate_table->info[rix].dot11rate;
+               u8 dot11rate = rate_table->info[rix].dot11rate;
                u8 phy = rate_table->info[rix].phy;
                if (i == 4 &&
                    ((dot11rate == 2 && phy == WLAN_RC_PHY_HT_40_SS) ||
@@ -1094,7 +1094,7 @@ static void ath_rc_update_ht(struct ath_softc *sc,
        int rate;
        u8 last_per;
        bool state_change = false;
-       struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
+       struct ath_rate_table *rate_table = sc->cur_rate_table;
        int size = ath_rc_priv->rate_table_size;
 
        if ((tx_rate < 0) || (tx_rate > rate_table->rate_cnt))
@@ -1254,7 +1254,7 @@ static void ath_rc_tx_status(struct ath_softc *sc,
        u8 flags;
        u32 i = 0, rix;
 
-       rate_table = sc->hw_rate_table[sc->sc_curmode];
+       rate_table = sc->cur_rate_table;
 
        /*
         * If the first rate is not the final index, there
@@ -1432,6 +1432,7 @@ static void ath_rc_init(struct ath_softc *sc,
        ath_rc_priv->max_valid_rate = k;
        ath_rc_sort_validrates(rate_table, ath_rc_priv);
        ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4];
+       sc->cur_rate_table = rate_table;
 }
 
 /* Rate Control callbacks */