1 files changed, 7 insertions, 49 deletions

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index e8fb03b91a44..f6005adcbf90 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -227,9 +227,7 @@ static int ieee80211_open(struct net_device *dev)
 		if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
 			local->fif_other_bss++;
 
-		spin_lock_bh(&local->filter_lock);
 		ieee80211_configure_filter(local);
-		spin_unlock_bh(&local->filter_lock);
 		break;
 	default:
 		conf.vif = &sdata->vif;
@@ -241,17 +239,13 @@ static int ieee80211_open(struct net_device *dev)
 
 		if (ieee80211_vif_is_mesh(&sdata->vif)) {
 			local->fif_other_bss++;
-			spin_lock_bh(&local->filter_lock);
 			ieee80211_configure_filter(local);
-			spin_unlock_bh(&local->filter_lock);
 
 			ieee80211_start_mesh(sdata);
 		} else if (sdata->vif.type == NL80211_IFTYPE_AP) {
 			local->fif_pspoll++;
 
-			spin_lock_bh(&local->filter_lock);
 			ieee80211_configure_filter(local);
-			spin_unlock_bh(&local->filter_lock);
 		}
 
 		changed |= ieee80211_reset_erp_info(sdata);
@@ -283,11 +277,6 @@ static int ieee80211_open(struct net_device *dev)
 		}
 	}
 
-	if (local->open_count == 0) {
-		tasklet_enable(&local->tx_pending_tasklet);
-		tasklet_enable(&local->tasklet);
-	}
-
 	/*
 	 * set_multicast_list will be invoked by the networking core
 	 * which will check whether any increments here were done in
@@ -404,10 +393,11 @@ static int ieee80211_stop(struct net_device *dev)
 	spin_lock_bh(&local->filter_lock);
 	__dev_addr_unsync(&local->mc_list, &local->mc_count,
 			  &dev->mc_list, &dev->mc_count);
-	ieee80211_configure_filter(local);
 	spin_unlock_bh(&local->filter_lock);
 	netif_addr_unlock_bh(dev);
 
+	ieee80211_configure_filter(local);
+
 	del_timer_sync(&local->dynamic_ps_timer);
 	cancel_work_sync(&local->dynamic_ps_enable_work);
 
@@ -458,9 +448,7 @@ static int ieee80211_stop(struct net_device *dev)
 		if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
 			local->fif_other_bss--;
 
-		spin_lock_bh(&local->filter_lock);
 		ieee80211_configure_filter(local);
-		spin_unlock_bh(&local->filter_lock);
 		break;
 	case NL80211_IFTYPE_STATION:
 		del_timer_sync(&sdata->u.mgd.chswitch_timer);
@@ -503,38 +491,14 @@ static int ieee80211_stop(struct net_device *dev)
 			local->fif_other_bss--;
 			atomic_dec(&local->iff_allmultis);
 
-			spin_lock_bh(&local->filter_lock);
 			ieee80211_configure_filter(local);
-			spin_unlock_bh(&local->filter_lock);
 
 			ieee80211_stop_mesh(sdata);
 		}
 		/* fall through */
 	default:
-		if (local->scan_sdata == sdata) {
-			if (!local->ops->hw_scan)
-				cancel_delayed_work_sync(&local->scan_work);
-			/*
-			 * The software scan can no longer run now, so we can
-			 * clear out the scan_sdata reference. However, the
-			 * hardware scan may still be running. The complete
-			 * function must be prepared to handle a NULL value.
-			 */
-			local->scan_sdata = NULL;
-			/*
-			 * The memory barrier guarantees that another CPU
-			 * that is hardware-scanning will now see the fact
-			 * that this interface is gone.
-			 */
-			smp_mb();
-			/*
-			 * If software scanning, complete the scan but since
-			 * the scan_sdata is NULL already don't send out a
-			 * scan event to userspace -- the scan is incomplete.
-			 */
-			if (test_bit(SCAN_SW_SCANNING, &local->scanning))
-				ieee80211_scan_completed(&local->hw, true);
-		}
+		if (local->scan_sdata == sdata)
+			ieee80211_scan_cancel(local);
 
 		/*
 		 * Disable beaconing for AP and mesh, IBSS can't
@@ -561,14 +525,8 @@ static int ieee80211_stop(struct net_device *dev)
 	ieee80211_recalc_ps(local, -1);
 
 	if (local->open_count == 0) {
-		drv_stop(local);
-
-		ieee80211_led_radio(local, false);
-
-		flush_workqueue(local->workqueue);
-
-		tasklet_disable(&local->tx_pending_tasklet);
-		tasklet_disable(&local->tasklet);
+		ieee80211_clear_tx_pending(local);
+		ieee80211_stop_device(local);
 
 		/* no reconfiguring after stop! */
 		hw_reconf_flags = 0;
@@ -622,8 +580,8 @@ static void ieee80211_set_multicast_list(struct net_device *dev)
 	spin_lock_bh(&local->filter_lock);
 	__dev_addr_sync(&local->mc_list, &local->mc_count,
 			&dev->mc_list, &dev->mc_count);
-	ieee80211_configure_filter(local);
 	spin_unlock_bh(&local->filter_lock);
+	ieee80211_queue_work(&local->hw, &local->reconfig_filter);
 }
 
 /*