1 files changed, 44 insertions, 0 deletions

diff --git a/net/wireless/core.c b/net/wireless/core.c
index 086cddd03ba6..5a63c3cbda2e 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -260,6 +260,45 @@ static void cfg80211_event_work(struct work_struct *work)
         rtnl_unlock();
 }
 
+void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
+{
+        struct cfg80211_iface_destroy *item;
+
+        ASSERT_RTNL();
+
+        spin_lock_irq(&rdev->destroy_list_lock);
+        while ((item = list_first_entry_or_null(&rdev->destroy_list,
+                                                struct cfg80211_iface_destroy,
+                                                list))) {
+                struct wireless_dev *wdev, *tmp;
+                u32 nlportid = item->nlportid;
+
+                list_del(&item->list);
+                kfree(item);
+                spin_unlock_irq(&rdev->destroy_list_lock);
+
+                list_for_each_entry_safe(wdev, tmp, &rdev->wdev_list, list) {
+                        if (nlportid == wdev->owner_nlportid)
+                                rdev_del_virtual_intf(rdev, wdev);
+                }
+
+                spin_lock_irq(&rdev->destroy_list_lock);
+        }
+        spin_unlock_irq(&rdev->destroy_list_lock);
+}
+
+static void cfg80211_destroy_iface_wk(struct work_struct *work)
+{
+        struct cfg80211_registered_device *rdev;
+
+        rdev = container_of(work, struct cfg80211_registered_device,
+                            destroy_work);
+
+        rtnl_lock();
+        cfg80211_destroy_ifaces(rdev);
+        rtnl_unlock();
+}
+
 /* exported functions */
 
 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
@@ -318,6 +357,10 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
         rdev->wiphy.dev.class = &ieee80211_class;
         rdev->wiphy.dev.platform_data = rdev;
 
+        INIT_LIST_HEAD(&rdev->destroy_list);
+        spin_lock_init(&rdev->destroy_list_lock);
+        INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk);
+
 #ifdef CONFIG_CFG80211_DEFAULT_PS
         rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 #endif
@@ -675,6 +718,7 @@ void wiphy_unregister(struct wiphy *wiphy)
         cancel_work_sync(&rdev->conn_work);
         flush_work(&rdev->event_work);
         cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
+        flush_work(&rdev->destroy_work);
 
 #ifdef CONFIG_PM
         if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)