Index: uspace/lib/device/include/devman.h
===================================================================
--- uspace/lib/device/include/devman.h	(revision 4285f384e4a854f4435e5f334456da415d9e1134)
+++ uspace/lib/device/include/devman.h	(revision 7064e71fb59500fe3cad795c283fcc654d8cec8b)
@@ -52,4 +52,5 @@
 extern errno_t devman_drv_fun_online(devman_handle_t);
 extern errno_t devman_drv_fun_offline(devman_handle_t);
+extern errno_t devman_drv_fun_quiesce(devman_handle_t);
 extern errno_t devman_drv_fun_wait_stable(devman_handle_t);
 
@@ -71,7 +72,9 @@
 extern errno_t devman_fun_online(devman_handle_t);
 extern errno_t devman_fun_offline(devman_handle_t);
+extern errno_t devman_fun_quiesce(devman_handle_t);
 
 extern errno_t devman_add_device_to_category(devman_handle_t, const char *);
 extern errno_t devman_fun_sid_to_handle(service_id_t, devman_handle_t *);
+extern errno_t devman_quiesce_devices(const char *);
 extern errno_t devman_get_drivers(devman_handle_t **, size_t *);
 extern errno_t devman_driver_get_devices(devman_handle_t, devman_handle_t **,
Index: uspace/lib/device/include/ipc/devman.h
===================================================================
--- uspace/lib/device/include/ipc/devman.h	(revision 4285f384e4a854f4435e5f334456da415d9e1134)
+++ uspace/lib/device/include/ipc/devman.h	(revision 7064e71fb59500fe3cad795c283fcc654d8cec8b)
@@ -148,4 +148,5 @@
 	DEVMAN_DRV_FUN_ONLINE,
 	DEVMAN_DRV_FUN_OFFLINE,
+	DEVMAN_DRV_FUN_QUIESCE,
 	DEVMAN_DRV_FUN_WAIT_STABLE,
 	DEVMAN_REMOVE_FUNCTION
@@ -156,4 +157,5 @@
 	DRIVER_DEV_REMOVE,
 	DRIVER_DEV_GONE,
+	DRIVER_DEV_QUIESCE,
 	DRIVER_FUN_ONLINE,
 	DRIVER_FUN_OFFLINE,
@@ -171,4 +173,5 @@
 	DEVMAN_FUN_ONLINE,
 	DEVMAN_FUN_OFFLINE,
+	DEVMAN_FUN_QUIESCE,
 	DEVMAN_FUN_GET_PATH,
 	DEVMAN_FUN_SID_TO_HANDLE,