diff --git a/src/nm-manager.c b/src/nm-manager.c
index 15e1c80e6a..a6bac553b2 100644
--- a/src/nm-manager.c
+++ b/src/nm-manager.c
@@ -1160,29 +1160,6 @@ nm_manager_get_device_by_udi (NMManager *manager, const char *udi)
 	return NULL;
 }
 
-static NMDevice *
-nm_manager_get_device_by_originating_device (NMManager *manager, const char *od)
-{
-	GSList *iter;
-
-	for (iter = NM_MANAGER_GET_PRIVATE (manager)->devices; iter; iter = iter->next) {
-		const char *candidate_od = g_object_get_data (G_OBJECT (iter->data), ORIGDEV_TAG);
-
-		if (candidate_od && !strcmp (candidate_od, od))
-			return NM_DEVICE (iter->data);
-	}
-	return NULL;
-}
-
-static void
-nm_manager_set_originating_device (NMDevice *device, const char *originating_device)
-{
-	g_return_if_fail (device != NULL);
-	g_return_if_fail (originating_device != NULL);
-
-	g_object_set_data_full (G_OBJECT (device), ORIGDEV_TAG, g_strdup (originating_device), g_free);
-}
-
 static gboolean
 nm_manager_udi_is_managed (NMManager *self, const char *udi)
 {
@@ -1692,18 +1669,10 @@ hal_manager_udi_added_cb (NMHalManager *hal_mgr,
 	if (nm_manager_get_device_by_udi (self, udi))
 		return;
 
-	/* Only ignore multiple ports for serial devices */
-	if (general_type == NM_TYPE_SERIAL_DEVICE) {
-		if (nm_manager_get_device_by_originating_device (self, originating_device))
-			return;
-	}
-
 	device = creator_fn (hal_mgr, udi, originating_device, nm_manager_udi_is_managed (self, udi));
 	if (!device)
 		return;
 
-	nm_manager_set_originating_device (NM_DEVICE (device), originating_device);
-
 	priv->devices = g_slist_append (priv->devices, device);
 
 	g_signal_connect (device, "state-changed",