diff --git a/headers/private/kernel/kdevice_manager.h b/headers/private/kernel/kdevice_manager.h
index c228f1f8ce..a704d23c7a 100644
--- a/headers/private/kernel/kdevice_manager.h
+++ b/headers/private/kernel/kdevice_manager.h
@@ -1,12 +1,50 @@
 /*
 ** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the OpenBeOS License.
+** Distributed under the terms of the Haiku License.
 */
 #ifndef _KERNEL_DEVICE_MANAGER_H
 #define _KERNEL_DEVICE_MANAGER_H
 
 
 #include <SupportDefs.h>
+#include <device_manager.h>
+
+
+// info about a PnP node
+typedef struct pnp_node_info {
+	struct pnp_node_info *prev, *next;
+	struct pnp_node_info *children_prev, *children_next;
+	struct pnp_node_info *notify_prev, *notify_next;
+	struct pnp_node_info *parent;
+	struct pnp_node_info *children;
+	int ref_count;				// reference count; see registration.c
+	pnp_driver_info *driver;
+	void *cookie;
+	bool registered;			// true, if device is officially existent
+	bool init_finished;			// true, if publish_device has been completed
+								// (sync with loader_lock)
+	bool blocked_by_rescan;		// true, if device is blocked because of rescan
+	bool verifying;				// true, if driver is being verified by rescan
+	bool redetected;			// true, if driver was redetected during rescan
+	int num_waiting_hooks;		// number of waiting hook calls
+	sem_id hook_sem;			// sem for waiting hook calls
+	int load_block_count;		// load-block nest count
+	int num_blocked_loads;		// number of waiting load calls
+	sem_id load_block_sem;		// sem for waiting load calls
+	int load_count;				// # of finished load_driver() calls
+	int loading;				// # of active (un)load_driver() calls
+	uint rescan_depth;			// > 0 if scanning is active
+	struct pnp_node_attr_info *attributes;	// list of attributes
+	uint num_io_resources;		// number of I/O resources
+	io_resource_handle *io_resources; // array of I/O resource (NULL-terminated)
+	int defer_probing; 			// > 0 defer probing for consumers of children
+	bool automatically_loaded;	// loaded automatically because PNP_DRIVER_ALWAYS_LOADED
+	struct pnp_node_info *unprobed_children; // list of un-probed children
+	struct pnp_node_info *unprobed_prev, *unprobed_next; // link for unprobed_children
+} pnp_node_info;
+
+
+struct kernel_args;
 
 #ifdef __cplusplus
 extern "C" {