udev: Add sanity check for ports on old Option devices

diff --git a/plugins/udevng.c b/plugins/udevng.c
index a498ae1..756de02 100644 (file)
--- a/plugins/udevng.c
+++ b/plugins/udevng.c
@@ -258,6 +258,9 @@ static gboolean setup_option(struct modem_info *modem)
 
        }
 
+       if (aux == NULL || mdm == NULL)
+               return FALSE;
+
        DBG("aux=%s modem=%s diag=%s", aux, mdm, diag);
 
        ofono_modem_set_string(modem->modem, "Aux", aux);