base-modem: set dbus id as soon as object is created

src/mm-base-modem.c

@@ -61,6 +61,7 @@ static GParamSpec *properties[PROP_LAST];
 struct _MMBaseModemPrivate {
     /* The connection to the system bus */
     GDBusConnection *connection;
+    guint            dbus_id;
 
     /* Modem-wide cancellable. If it ever gets cancelled, no further operations
      * should be done by the modem. */
@@ -113,6 +114,12 @@ struct _MMBaseModemPrivate {
 #endif
 };
 
+guint
+mm_base_modem_get_dbus_id (MMBaseModem *self)
+{
+    return self->priv->dbus_id;
+}
+
 static gchar *
 get_hash_key (const gchar *subsys,
               const gchar *name)
@@ -1518,11 +1525,16 @@ teardown_ports_table (MMBaseModem *self)
 static void
 mm_base_modem_init (MMBaseModem *self)
 {
+    static guint id = 0;
+
     /* Initialize private data */
     self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
                                               MM_TYPE_BASE_MODEM,
                                               MMBaseModemPrivate);
 
+    /* Each modem is given a unique id to build its own DBus path */
+    self->priv->dbus_id = id++;
+
     /* Setup authorization provider */
     self->priv->authp = mm_auth_provider_get ();
     self->priv->authp_cancellable = g_cancellable_new ();

src/mm-base-modem.h

@@ -105,6 +105,8 @@ struct _MMBaseModemClass {
 
 GType mm_base_modem_get_type (void);
 
+guint     mm_base_modem_get_dbus_id  (MMBaseModem *self);
+
 gboolean  mm_base_modem_grab_port    (MMBaseModem         *self,
                                       MMKernelDevice      *kernel_device,
                                       MMPortType           ptype,

src/mm-device.c

@@ -251,8 +251,7 @@ static void
 export_modem (MMDevice *self)
 {
     GDBusConnection *connection = NULL;
-    static guint32 id = 0;
-    gchar *path;
+    gchar           *path;
 
     g_assert (MM_IS_BASE_MODEM (self->priv->modem));
     g_assert (G_IS_DBUS_OBJECT_MANAGER (self->priv->object_manager));
@@ -275,7 +274,7 @@ export_modem (MMDevice *self)
 
     /* No outstanding port tasks, so if the modem is valid we can export it */
 
-    path = g_strdup_printf (MM_DBUS_MODEM_PREFIX "/%d", id++);
+    path = g_strdup_printf (MM_DBUS_MODEM_PREFIX "/%d", mm_base_modem_get_dbus_id (self->priv->modem));
     g_object_get (self->priv->object_manager,
                   "connection", &connection,
                   NULL);