ath9k_htc: Update HT configuration properly

Use BSS_CHANGED_HT to handle HT parameter changes.
The rate information on the target has to be updated
to handle changes in HT configuration.

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

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index fe5debf0b7d7..80feeb3a6bf0 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -409,6 +409,33 @@ static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
                           sta->addr, be32_to_cpu(trate.capflags));
 }
 
+static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
+                                  struct ieee80211_vif *vif,
+                                  struct ieee80211_bss_conf *bss_conf)
+{
+        struct ath_common *common = ath9k_hw_common(priv->ah);
+        struct ath9k_htc_target_rate trate;
+        struct ieee80211_sta *sta;
+        int ret;
+
+        memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
+
+        rcu_read_lock();
+        sta = ieee80211_find_sta(vif, bss_conf->bssid);
+        if (!sta) {
+                rcu_read_unlock();
+                return;
+        }
+        ath9k_htc_setup_rate(priv, sta, &trate);
+        rcu_read_unlock();
+
+        ret = ath9k_htc_send_rate_cmd(priv, &trate);
+        if (!ret)
+                ath_print(common, ATH_DBG_CONFIG,
+                          "Updated target sta: %pM, rate caps: 0x%X\n",
+                          bss_conf->bssid, be32_to_cpu(trate.capflags));
+}
+
 static int ath9k_htc_aggr_oper(struct ath9k_htc_priv *priv,
                                struct ieee80211_vif *vif,
                                u8 *sta_addr, u8 tid, bool oper)
@@ -1595,6 +1622,9 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
                 ath9k_hw_init_global_settings(ah);
         }
 
+        if (changed & BSS_CHANGED_HT)
+                ath9k_htc_update_rate(priv, vif, bss_conf);
+
         ath9k_htc_ps_restore(priv);
         mutex_unlock(&priv->mutex);
 }