1 files changed, 46 insertions, 10 deletions

diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 2119a79dcc86..feb8fcbab2d5 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -1740,8 +1740,10 @@ static int ipw_radio_kill_sw(struct ipw_priv *priv, int disable_radio)
 	if (disable_radio) {
 		priv->status |= STATUS_RF_KILL_SW;
 
-		if (priv->workqueue)
+		if (priv->workqueue) {
 			cancel_delayed_work(&priv->request_scan);
+			cancel_delayed_work(&priv->scan_event);
+		}
 		queue_work(priv->workqueue, &priv->down);
 	} else {
 		priv->status &= ~STATUS_RF_KILL_SW;
@@ -1992,6 +1994,7 @@ static void ipw_irq_tasklet(struct ipw_priv *priv)
 		wake_up_interruptible(&priv->wait_command_queue);
 		priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
 		cancel_delayed_work(&priv->request_scan);
+		cancel_delayed_work(&priv->scan_event);
 		schedule_work(&priv->link_down);
 		queue_delayed_work(priv->workqueue, &priv->rf_kill, 2 * HZ);
 		handled |= IPW_INTA_BIT_RF_KILL_DONE;
@@ -4343,6 +4346,37 @@ static void ipw_handle_missed_beacon(struct ipw_priv *priv,
 	IPW_DEBUG_NOTIF("Missed beacon: %d\n", missed_count);
 }
 
+static void ipw_scan_event(struct work_struct *work)
+{
+	union iwreq_data wrqu;
+
+	struct ipw_priv *priv =
+		container_of(work, struct ipw_priv, scan_event.work);
+
+	wrqu.data.length = 0;
+	wrqu.data.flags = 0;
+	wireless_send_event(priv->net_dev, SIOCGIWSCAN, &wrqu, NULL);
+}
+
+static void handle_scan_event(struct ipw_priv *priv)
+{
+	/* Only userspace-requested scan completion events go out immediately */
+	if (!priv->user_requested_scan) {
+		if (!delayed_work_pending(&priv->scan_event))
+			queue_delayed_work(priv->workqueue, &priv->scan_event,
+					 round_jiffies(msecs_to_jiffies(4000)));
+	} else {
+		union iwreq_data wrqu;
+
+		priv->user_requested_scan = 0;
+		cancel_delayed_work(&priv->scan_event);
+
+		wrqu.data.length = 0;
+		wrqu.data.flags = 0;
+		wireless_send_event(priv->net_dev, SIOCGIWSCAN, &wrqu, NULL);
+	}
+}
+
 /**
  * Handle host notification packet.
  * Called from interrupt routine
@@ -4705,14 +4739,8 @@ static void ipw_rx_notification(struct ipw_priv *priv,
 			 * on how the scan was initiated. User space can just
 			 * sync on periodic scan to get fresh data...
 			 * Jean II */
-			if (x->status == SCAN_COMPLETED_STATUS_COMPLETE) {
-				union iwreq_data wrqu;
-
-				wrqu.data.length = 0;
-				wrqu.data.flags = 0;
-				wireless_send_event(priv->net_dev, SIOCGIWSCAN,
-						    &wrqu, NULL);
-			}
+			if (x->status == SCAN_COMPLETED_STATUS_COMPLETE)
+				handle_scan_event(priv);
 			break;
 		}
 
@@ -9490,6 +9518,10 @@ static int ipw_wx_set_scan(struct net_device *dev,
 	struct ipw_priv *priv = ieee80211_priv(dev);
 	struct iw_scan_req *req = (struct iw_scan_req *)extra;
 
+	mutex_lock(&priv->mutex);
+	priv->user_requested_scan = 1;
+	mutex_unlock(&priv->mutex);
+
 	if (wrqu->data.length == sizeof(struct iw_scan_req)) {
 		if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 			ipw_request_direct_scan(priv, req->essid,
@@ -10668,6 +10700,7 @@ static void ipw_link_up(struct ipw_priv *priv)
 	}
 
 	cancel_delayed_work(&priv->request_scan);
+	cancel_delayed_work(&priv->scan_event);
 	ipw_reset_stats(priv);
 	/* Ensure the rate is updated immediately */
 	priv->last_rate = ipw_get_current_rate(priv);
@@ -10705,7 +10738,8 @@ static void ipw_link_down(struct ipw_priv *priv)
 	if (!(priv->status & STATUS_EXIT_PENDING)) {
 		/* Queue up another scan... */
 		queue_delayed_work(priv->workqueue, &priv->request_scan, 0);
-	}
+	} else
+		cancel_delayed_work(&priv->scan_event);
 }
 
 static void ipw_bg_link_down(struct work_struct *work)
@@ -10735,6 +10769,7 @@ static int ipw_setup_deferred_work(struct ipw_priv *priv)
 	INIT_WORK(&priv->up, ipw_bg_up);
 	INIT_WORK(&priv->down, ipw_bg_down);
 	INIT_DELAYED_WORK(&priv->request_scan, ipw_request_scan);
+	INIT_DELAYED_WORK(&priv->scan_event, ipw_scan_event);
 	INIT_WORK(&priv->request_passive_scan, ipw_request_passive_scan);
 	INIT_DELAYED_WORK(&priv->gather_stats, ipw_bg_gather_stats);
 	INIT_WORK(&priv->abort_scan, ipw_bg_abort_scan);
@@ -11766,6 +11801,7 @@ static void ipw_pci_remove(struct pci_dev *pdev)
 	cancel_delayed_work(&priv->adhoc_check);
 	cancel_delayed_work(&priv->gather_stats);
 	cancel_delayed_work(&priv->request_scan);
+	cancel_delayed_work(&priv->scan_event);
 	cancel_delayed_work(&priv->rf_kill);
 	cancel_delayed_work(&priv->scan_check);
 	destroy_workqueue(priv->workqueue);