Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...

[karo-tx-linux.git] / net / mac80211 / sta_info.c

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index a79ce820cb50cf01e5cff62a47b974332c3fe8d6..238a0cca320e621dad86cbca1830e4867459cb6d 100644 (file)
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -766,6 +766,7 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
        struct ieee80211_local *local;
        struct ieee80211_sub_if_data *sdata;
        int ret, i;
+       bool have_key = false;
 
        might_sleep();
 
@@ -793,12 +794,19 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
        list_del_rcu(&sta->list);
 
        mutex_lock(&local->key_mtx);
-       for (i = 0; i < NUM_DEFAULT_KEYS; i++)
+       for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
                __ieee80211_key_free(key_mtx_dereference(local, sta->gtk[i]));
-       if (sta->ptk)
+               have_key = true;
+       }
+       if (sta->ptk) {
                __ieee80211_key_free(key_mtx_dereference(local, sta->ptk));
+               have_key = true;
+       }
        mutex_unlock(&local->key_mtx);
 
+       if (!have_key)
+               synchronize_net();
+
        sta->dead = true;
 
        local->num_sta--;