modem: Reset unregister when atom is unregistered

diff --git a/src/modem.c b/src/modem.c
index dc4b583..88ab451 100644 (file)
--- a/src/modem.c
+++ b/src/modem.c
@@ -234,6 +234,7 @@ void __ofono_atom_unregister(struct ofono_atom *atom)
        call_watches(atom, OFONO_ATOM_WATCH_CONDITION_UNREGISTERED);
 
        atom->unregister(atom);
+       atom->unregister = NULL;
 }
 
 gboolean __ofono_atom_get_registered(struct ofono_atom *atom)