sierra: fix power-on delay

Since the modem states patch the delay for power-on wasn't honored
for Sierra devices.  Fix that using the new power-on-done handler
and also fix the bug where if the modem was removed, the plugin
would crash because it wasn't handling the timeout removal.

Also remove the explicit PIN check since that's now handled by the
generic GSM code before the modem is even exported over DBus.

plugins/mm-modem-sierra-gsm.c

@@ -27,6 +27,11 @@ static void modem_init (MMModem *modem_class);
 G_DEFINE_TYPE_EXTENDED (MMModemSierraGsm, mm_modem_sierra_gsm, MM_TYPE_GENERIC_GSM, 0,
                         G_IMPLEMENT_INTERFACE (MM_TYPE_MODEM, modem_init))
 
+#define MM_MODEM_SIERRA_GSM_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_MODEM_SIERRA_GSM, MMModemSierraGsmPrivate))
+
+typedef struct {
+    guint enable_wait_id;
+} MMModemSierraGsmPrivate;
 
 MMModem *
 mm_modem_sierra_gsm_new (const char *device,
@@ -48,51 +53,42 @@ mm_modem_sierra_gsm_new (const char *device,
 /*    Modem class override functions                                         */
 /*****************************************************************************/
 
-static void
-pin_check_done (MMModem *modem, GError *error, gpointer user_data)
-{
-    MMCallbackInfo *info = (MMCallbackInfo *) user_data;
-
-    mm_generic_gsm_enable_complete (MM_GENERIC_GSM (modem), error, info);
-}
-
 static gboolean
-sierra_enabled (gpointer data)
+sierra_enabled (gpointer user_data)
 {
-    MMCallbackInfo *info = (MMCallbackInfo *) data;
+    MMCallbackInfo *info = user_data;
+    MMGenericGsm *modem;
+    MMModemSierraGsmPrivate *priv;
 
-    /* Now check the PIN explicitly, sierra doesn't seem to report
+    /* Make sure we don't use an invalid modem that may have been removed */
-     * that it needs it otherwise.
+    if (info->modem) {
-     */
+        modem = MM_GENERIC_GSM (info->modem);
-    mm_generic_gsm_check_pin (MM_GENERIC_GSM (info->modem), pin_check_done, info);
+        priv = MM_MODEM_SIERRA_GSM_GET_PRIVATE (modem);
+        priv->enable_wait_id = 0;
+        MM_GENERIC_GSM_CLASS (mm_modem_sierra_gsm_parent_class)->do_enable_power_up_done (modem, NULL, NULL, info);
+    }
     return FALSE;
 }
 
 static void
-parent_enable_done (MMModem *modem, GError *error, gpointer user_data)
+real_do_enable_power_up_done (MMGenericGsm *gsm,
+                              GString *response,
+                              GError *error,
+                              MMCallbackInfo *info)
 {
-    MMCallbackInfo *info = (MMCallbackInfo *) user_data;
+    MMModemSierraGsmPrivate *priv = MM_MODEM_SIERRA_GSM_GET_PRIVATE (gsm);
 
     if (error) {
-        mm_generic_gsm_enable_complete (MM_GENERIC_GSM (modem), error, info);
+        /* Chain up to parent */
+        MM_GENERIC_GSM_CLASS (mm_modem_sierra_gsm_parent_class)->do_enable_power_up_done (gsm, NULL, error, info);
         return;
     }
 
     /* Some Sierra devices return OK on +CFUN=1 right away but need some time
      * to finish initialization.
      */
-    g_timeout_add_seconds (10, sierra_enabled, info);
+    g_warn_if_fail (priv->enable_wait_id == 0);
-}
+    priv->enable_wait_id = g_timeout_add_seconds (10, sierra_enabled, info);
-
-static void
-enable (MMModem *modem, MMModemFn callback, gpointer user_data)
-{
-    MMModem *parent_modem_iface;
-    MMCallbackInfo *info;
-
-    info = mm_callback_info_new (modem, callback, user_data);
-    parent_modem_iface = g_type_interface_peek_parent (MM_MODEM_GET_INTERFACE (modem));
-    parent_modem_iface->enable (modem, parent_enable_done, info);
 }
 
 static gboolean
@@ -135,7 +131,6 @@ grab_port (MMModem *modem,
 static void
 modem_init (MMModem *modem_class)
 {
-    modem_class->enable = enable;
     modem_class->grab_port = grab_port;
 }
 
@@ -145,8 +140,24 @@ mm_modem_sierra_gsm_init (MMModemSierraGsm *self)
 }
 
 static void
-mm_modem_sierra_gsm_class_init (MMModemSierraGsmClass *klass)
+dispose (GObject *object)
 {
-    mm_modem_sierra_gsm_parent_class = g_type_class_peek_parent (klass);
+    MMModemSierraGsmPrivate *priv = MM_MODEM_SIERRA_GSM_GET_PRIVATE (object);
+
+    if (priv->enable_wait_id)
+        g_source_remove (priv->enable_wait_id);
+}
+
+static void
+mm_modem_sierra_gsm_class_init (MMModemSierraGsmClass *klass)
+{
+    GObjectClass *object_class = G_OBJECT_CLASS (klass);
+    MMGenericGsmClass *gsm_class = MM_GENERIC_GSM_CLASS (klass);
+
+    mm_modem_sierra_gsm_parent_class = g_type_class_peek_parent (klass);
+    g_type_class_add_private (object_class, sizeof (MMModemSierraGsmPrivate));
+
+    object_class->dispose = dispose;
+    gsm_class->do_enable_power_up_done = real_do_enable_power_up_done;
 }