device: show a bit more info if the device is not present

[project/netifd.git] / device.c

diff --git a/device.c b/device.c
index 47b5875..9dcd29a 100644 (file)
--- a/device.c
+++ b/device.c
@@ -1,3 +1,16 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -466,6 +479,9 @@ void device_add_user(struct device_user *dep, struct device *dev)
        if (dep->dev)
                device_remove_user(dep);
 
+       if (!dev)
+               return;
+
        dep->dev = dev;
        list_add_tail(&dep->list, &dev->users);
        if (dep->cb && dev->present) {
@@ -688,10 +704,13 @@ device_dump_status(struct blob_buf *b, struct device *dev)
                return;
        }
 
+       blobmsg_add_u8(b, "external", dev->external);
+       blobmsg_add_u8(b, "present", dev->present);
+       blobmsg_add_string(b, "type", dev->type->name);
+
        if (!dev->present)
                return;
 
-       blobmsg_add_string(b, "type", dev->type->name);
        blobmsg_add_u8(b, "up", !!dev->active);
        if (dev->type->dump_info)
                dev->type->dump_info(dev, b);