IEEE1394(r1129): Initial support for reusing node entries over plug/unplug cycles

drivers/ieee1394/ieee1394_core.c

@@ -1008,6 +1008,7 @@ static int __init ieee1394_init(void)
 					      0, 0, NULL, NULL);
 
 	bus_register(&ieee1394_bus_type);
+	bus_create_file(&ieee1394_bus_type, &bus_attr_destroy);
 
 	if (init_csr())
 		return -ENOMEM;
@@ -1027,6 +1028,7 @@ static void __exit ieee1394_cleanup(void)
 
 	cleanup_csr();
 
+	bus_remove_file(&ieee1394_bus_type, &bus_attr_destroy);
 	bus_unregister(&ieee1394_bus_type);
 
 	kmem_cache_destroy(hpsb_packet_cache);

drivers/ieee1394/nodemgr.h

@@ -101,6 +101,9 @@ struct node_entry {
 
 	struct device device;
 
+	/* Means this node is not attached anymore */
+	int in_limbo;
+
 	struct csr1212_csr *csr;
 };
 
@@ -188,4 +191,7 @@ void cleanup_ieee1394_nodemgr(void);
 /* The template for a host device */
 extern struct device nodemgr_dev_template_host;
 
+/* Bus attribute to destroy limbo'd nodes */
+extern struct bus_attribute bus_attr_destroy;
+
 #endif /* _IEEE1394_NODEMGR_H */