1 files changed, 26 insertions, 4 deletions

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 3b73b07486cf..c384e77ff77a 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -155,10 +155,16 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
 					  setup->channel_type))
 		return -EINVAL;
 
+	err = cfg80211_can_use_chan(rdev, wdev, setup->channel,
+				    CHAN_MODE_SHARED);
+	if (err)
+		return err;
+
 	err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup);
 	if (!err) {
 		memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len);
 		wdev->mesh_id_len = setup->mesh_id_len;
+		wdev->channel = setup->channel;
 	}
 
 	return err;
@@ -172,9 +178,11 @@ int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	int err;
 
+	mutex_lock(&rdev->devlist_mtx);
 	wdev_lock(wdev);
 	err = __cfg80211_join_mesh(rdev, dev, setup, conf);
 	wdev_unlock(wdev);
+	mutex_unlock(&rdev->devlist_mtx);
 
 	return err;
 }
@@ -184,6 +192,7 @@ int cfg80211_set_mesh_freq(struct cfg80211_registered_device *rdev,
 			   enum nl80211_channel_type channel_type)
 {
 	struct ieee80211_channel *channel;
+	int err;
 
 	channel = rdev_freq_to_chan(rdev, freq, channel_type);
 	if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
@@ -205,9 +214,19 @@ int cfg80211_set_mesh_freq(struct cfg80211_registered_device *rdev,
 
 		if (!netif_running(wdev->netdev))
 			return -ENETDOWN;
-		return rdev->ops->libertas_set_mesh_channel(&rdev->wiphy,
-							    wdev->netdev,
-							    channel);
+
+		err = cfg80211_can_use_chan(rdev, wdev, channel,
+					    CHAN_MODE_SHARED);
+		if (err)
+			return err;
+
+		err = rdev->ops->libertas_set_mesh_channel(&rdev->wiphy,
+							   wdev->netdev,
+							   channel);
+		if (!err)
+			wdev->channel = channel;
+
+		return err;
 	}
 
 	if (wdev->mesh_id_len)
@@ -249,8 +268,11 @@ static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
 		return -ENOTCONN;
 
 	err = rdev->ops->leave_mesh(&rdev->wiphy, dev);
-	if (!err)
+	if (!err) {
 		wdev->mesh_id_len = 0;
+		wdev->channel = NULL;
+	}
+
 	return err;
 }