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>

2 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index ca8ed7dcd7bc..726d0a38d240 100644
--- 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 76acd2b75fcd..8eec66756c75 100644
--- 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 */