Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

[karo-tx-linux.git] / net / mac80211 / sta_info.c

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index ff0eb948917bf78b3f25c97f4ae568c9b35088ca..730197591ab5135e307317d7c9d8e358dae6bceb 100644 (file)
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -575,7 +575,7 @@ static int sta_info_buffer_expired(struct sta_info *sta,
 }
 
 
-static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
+static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
                                             struct sta_info *sta)
 {
        unsigned long flags;
@@ -583,7 +583,7 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
        struct ieee80211_sub_if_data *sdata;
 
        if (skb_queue_empty(&sta->ps_tx_buf))
-               return;
+               return false;
 
        for (;;) {
                spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
@@ -608,6 +608,8 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
                if (skb_queue_empty(&sta->ps_tx_buf))
                        sta_info_clear_tim_bit(sta);
        }
+
+       return true;
 }
 
 static int __must_check __sta_info_destroy(struct sta_info *sta)
@@ -755,15 +757,20 @@ static void sta_info_cleanup(unsigned long data)
 {
        struct ieee80211_local *local = (struct ieee80211_local *) data;
        struct sta_info *sta;
+       bool timer_needed = false;
 
        rcu_read_lock();
        list_for_each_entry_rcu(sta, &local->sta_list, list)
-               sta_info_cleanup_expire_buffered(local, sta);
+               if (sta_info_cleanup_expire_buffered(local, sta))
+                       timer_needed = true;
        rcu_read_unlock();
 
        if (local->quiescing)
                return;
 
+       if (!timer_needed)
+               return;
+
        local->sta_cleanup.expires =
                round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
        add_timer(&local->sta_cleanup);
@@ -848,8 +855,12 @@ struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
        struct sta_info *sta, *nxt;
 
        /* Just return a random station ... first in list ... */
-       for_each_sta_info(hw_to_local(hw), addr, sta, nxt)
+       for_each_sta_info(hw_to_local(hw), addr, sta, nxt) {
+               if (!sta->uploaded)
+                       return NULL;
                return &sta->sta;
+       }
+
        return NULL;
 }
 EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
@@ -857,14 +868,19 @@ EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
 struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
                                         const u8 *addr)
 {
-       struct ieee80211_sub_if_data *sdata;
+       struct sta_info *sta;
 
        if (!vif)
                return NULL;
 
-       sdata = vif_to_sdata(vif);
+       sta = sta_info_get_bss(vif_to_sdata(vif), addr);
+       if (!sta)
+               return NULL;
+
+       if (!sta->uploaded)
+               return NULL;
 
-       return ieee80211_find_sta_by_hw(&sdata->local->hw, addr);
+       return &sta->sta;
 }
 EXPORT_SYMBOL(ieee80211_find_sta);