1 files changed, 30 insertions, 18 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 64d92d5..4f6b267 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -90,20 +90,11 @@ enum rx_mgmt_action {
 	/* no action required */
 	RX_MGMT_NONE,
 
-	/* caller must call cfg80211_send_rx_auth() */
-	RX_MGMT_CFG80211_AUTH,
-
-	/* caller must call cfg80211_send_rx_assoc() */
-	RX_MGMT_CFG80211_ASSOC,
-
 	/* caller must call cfg80211_send_deauth() */
 	RX_MGMT_CFG80211_DEAUTH,
 
 	/* caller must call cfg80211_send_disassoc() */
 	RX_MGMT_CFG80211_DISASSOC,
-
-	/* caller must tell cfg80211 about internal error */
-	RX_MGMT_CFG80211_ASSOC_ERROR,
 };
 
 /* utils */
@@ -759,6 +750,8 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 			     dynamic_ps_enable_work);
 	struct ieee80211_sub_if_data *sdata = local->ps_sdata;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	unsigned long flags;
+	int q;
 
 	/* can only happen when PS was just disabled anyway */
 	if (!sdata)
@@ -767,18 +760,37 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 	if (local->hw.conf.flags & IEEE80211_CONF_PS)
 		return;
 
+	/*
+	 * transmission can be stopped by others which leads to
+	 * dynamic_ps_timer expiry. Postpond the ps timer if it
+	 * is not the actual idle state.
+	 */
+	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+	for (q = 0; q < local->hw.queues; q++) {
+		if (local->queue_stop_reasons[q]) {
+			spin_unlock_irqrestore(&local->queue_stop_reason_lock,
+					       flags);
+			mod_timer(&local->dynamic_ps_timer, jiffies +
+				  msecs_to_jiffies(
+				  local->hw.conf.dynamic_ps_timeout));
+			return;
+		}
+	}
+	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+
 	if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
 	    (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED))) {
 		netif_tx_stop_all_queues(sdata->dev);
-		/*
-		 * Flush all the frames queued in the driver before
-		 * going to power save
-		 */
-		drv_flush(local, false);
-		ieee80211_send_nullfunc(local, sdata, 1);
 
-		/* Flush once again to get the tx status of nullfunc frame */
-		drv_flush(local, false);
+		if (drv_tx_frames_pending(local))
+			mod_timer(&local->dynamic_ps_timer, jiffies +
+				  msecs_to_jiffies(
+				  local->hw.conf.dynamic_ps_timeout));
+		else {
+			ieee80211_send_nullfunc(local, sdata, 1);
+			/* Flush to get the tx status of nullfunc frame */
+			drv_flush(local, false);
+		}
 	}
 
 	if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
@@ -789,7 +801,7 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 	}
 
-	netif_tx_start_all_queues(sdata->dev);
+	netif_tx_wake_all_queues(sdata->dev);
 }
 
 void ieee80211_dynamic_ps_timer(unsigned long data)