mac80211: use a structure to hold the mesh config information element

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 5ae1bf3..2fb0432 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -666,8 +666,8 @@
 			elems->mesh_id_len = elen;
 			break;
 		case WLAN_EID_MESH_CONFIG:
-			elems->mesh_config = pos;
-			elems->mesh_config_len = elen;
+			if (elen >= sizeof(struct ieee80211_meshconf_ie))
+				elems->mesh_config = (void *)pos;
 			break;
 		case WLAN_EID_PEER_LINK:
 			elems->peer_link = pos;