3 files changed, 22 insertions, 16 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index ef40db5ab3c7..12226b7743c6 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1437,6 +1437,9 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
         if (!local->ops->conf_tx)
                 return -EOPNOTSUPP;
 
+        if (local->hw.queues < IEEE80211_NUM_ACS)
+                return -EOPNOTSUPP;
+
         memset(&p, 0, sizeof(p));
         p.aifs = params->aifs;
         p.cw_max = params->cwmax;
@@ -1449,9 +1452,6 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
          */
         p.uapsd = false;
 
-        if (params->ac >= local->hw.queues)
-                return -EINVAL;
-
         sdata->tx_conf[params->ac] = p;
         if (drv_conf_tx(local, sdata, params->ac, &p)) {
                 wiphy_debug(local->hw.wiphy,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 93b075e14d09..8e7af7cee013 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -687,7 +687,7 @@ struct ieee80211_sub_if_data {
         __be16 control_port_protocol;
         bool control_port_no_encrypt;
 
-        struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
+        struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
 
         struct work_struct work;
         struct sk_buff_head skb_queue;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1d4b8b7a5a33..2b62307825d4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -769,19 +769,22 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 {
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_tx_queue_params qparam;
-        int queue;
+        int ac;
         bool use_11b;
         int aCWmin, aCWmax;
 
         if (!local->ops->conf_tx)
                 return;
 
+        if (local->hw.queues < IEEE80211_NUM_ACS)
+                return;
+
         memset(&qparam, 0, sizeof(qparam));
 
         use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&
                  !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
 
-        for (queue = 0; queue < local->hw.queues; queue++) {
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
                 /* Set defaults according to 802.11-2007 Table 7-37 */
                 aCWmax = 1023;
                 if (use_11b)
@@ -789,7 +792,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
                 else
                         aCWmin = 15;
 
-                switch (queue) {
+                switch (ac) {
                 case IEEE80211_AC_BK:
                         qparam.cw_max = aCWmax;
                         qparam.cw_min = aCWmin;
@@ -825,8 +828,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 
                 qparam.uapsd = false;
 
-                sdata->tx_conf[queue] = qparam;
-                drv_conf_tx(local, sdata, queue, &qparam);
+                sdata->tx_conf[ac] = qparam;
+                drv_conf_tx(local, sdata, ac, &qparam);
         }
 
         /* after reinitialize QoS TX queues setting to default,
@@ -1226,14 +1229,17 @@ int ieee80211_reconfig(struct ieee80211_local *local)
         mutex_unlock(&local->sta_mtx);
 
         /* reconfigure tx conf */
-        list_for_each_entry(sdata, &local->interfaces, list) {
-                if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
-                    sdata->vif.type == NL80211_IFTYPE_MONITOR ||
-                    !ieee80211_sdata_running(sdata))
-                        continue;
+        if (hw->queues >= IEEE80211_NUM_ACS) {
+                list_for_each_entry(sdata, &local->interfaces, list) {
+                        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+                            sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+                            !ieee80211_sdata_running(sdata))
+                                continue;
 
-                for (i = 0; i < hw->queues; i++)
-                        drv_conf_tx(local, sdata, i, &sdata->tx_conf[i]);
+                        for (i = 0; i < IEEE80211_NUM_ACS; i++)
+                                drv_conf_tx(local, sdata, i,
+                                            &sdata->tx_conf[i]);
+                }
         }
 
         /* reconfigure hardware */