ifx: Detect when DLC shutdown happens

In case one of the DLCs shuts down, the system has an undefined state
and thus just shutdown the whole device.

diff --git a/plugins/ifx.c b/plugins/ifx.c
index 430db22..9c3c3e3 100644 (file)
--- a/plugins/ifx.c
+++ b/plugins/ifx.c
@@ -183,28 +183,6 @@ static void xsim_notify(GAtResult *result, gpointer user_data)
        }
 }
 
-static GAtChat *create_chat(GIOChannel *channel, char *debug)
-{
-       GAtSyntax *syntax;
-       GAtChat *chat;
-
-       if (!channel)
-               return NULL;
-
-       syntax = g_at_syntax_new_gsmv1();
-       chat = g_at_chat_new(channel, syntax);
-       g_at_syntax_unref(syntax);
-       g_io_channel_unref(channel);
-
-       if (!chat)
-               return NULL;
-
-       if (getenv("OFONO_AT_DEBUG"))
-               g_at_chat_set_debug(chat, ifx_debug, debug);
-
-       return chat;
-}
-
 static void shutdown_device(struct ifx_data *data)
 {
        int i, fd;
@@ -241,6 +219,43 @@ done:
        data->device = NULL;
 }
 
+static void dlc_disconnect(gpointer user_data)
+{
+       struct ofono_modem *modem = user_data;
+       struct ifx_data *data = ofono_modem_get_data(modem);
+
+       DBG("");
+
+       ofono_warn("Disconnect of modem channel");
+
+       shutdown_device(data);
+}
+
+static GAtChat *create_chat(GIOChannel *channel, struct ofono_modem *modem,
+                                                               char *debug)
+{
+       GAtSyntax *syntax;
+       GAtChat *chat;
+
+       if (!channel)
+               return NULL;
+
+       syntax = g_at_syntax_new_gsmv1();
+       chat = g_at_chat_new(channel, syntax);
+       g_at_syntax_unref(syntax);
+       g_io_channel_unref(channel);
+
+       if (!chat)
+               return NULL;
+
+       if (getenv("OFONO_AT_DEBUG"))
+               g_at_chat_set_debug(chat, ifx_debug, debug);
+
+       g_at_chat_set_disconnect_function(chat, dlc_disconnect, modem);
+
+       return chat;
+}
+
 static void xgendata_query(gboolean ok, GAtResult *result, gpointer user_data)
 {
        struct ofono_modem *modem = user_data;
@@ -389,7 +404,7 @@ static gboolean dlc_ready_check(gpointer user_data)
        for (i = 0; i < NUM_DLC; i++) {
                GIOChannel *channel = g_at_tty_open(dlc_nodes[i], NULL);
 
-               data->dlcs[i] = create_chat(channel, dlc_prefixes[i]);
+               data->dlcs[i] = create_chat(channel, modem, dlc_prefixes[i]);
                if (!data->dlcs[i]) {
                        ofono_error("Failed to open %s", dlc_nodes[i]);
                        goto error;
@@ -438,7 +453,7 @@ static void setup_internal_mux(struct ofono_modem *modem)
        for (i = 0; i < NUM_DLC; i++) {
                GIOChannel *channel = g_at_mux_create_channel(data->mux);
 
-               data->dlcs[i] = create_chat(channel, dlc_prefixes[i]);
+               data->dlcs[i] = create_chat(channel, modem, dlc_prefixes[i]);
                if (!data->dlcs[i]) {
                        ofono_error("Failed to create channel");
                        goto error;