mac80211: verify virtual interfaces in driver API

The driver is never informed about monitor or
AP_VLAN interfaces, so whenever we pass those
to it later this is a bug. Verify we don't as
there are some cases where this could happen.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 33a9746..4ee624c 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -265,7 +265,7 @@
 		break;
 	default:
 		if (coming_up) {
-			res = drv_add_interface(local, &sdata->vif);
+			res = drv_add_interface(local, sdata);
 			if (res)
 				goto err_stop;
 		}
@@ -345,7 +345,7 @@
 
 	return 0;
  err_del_interface:
-	drv_remove_interface(local, &sdata->vif);
+	drv_remove_interface(local, sdata);
  err_stop:
 	if (!local->open_count)
 		drv_stop(local);
@@ -520,7 +520,7 @@
 		ieee80211_free_keys(sdata);
 
 		if (going_down)
-			drv_remove_interface(local, &sdata->vif);
+			drv_remove_interface(local, sdata);
 	}
 
 	sdata->bss = NULL;