Index: uspace/lib/c/include/devman.h
===================================================================
--- uspace/lib/c/include/devman.h	(revision 431d6d6a5bc501f28e40f42930d836850a1b2714)
+++ uspace/lib/c/include/devman.h	(revision ba7b75378ae798b8d8179c4df6d951c791a80756)
@@ -41,6 +41,7 @@
 #include <bool.h>
 
-extern int devman_get_phone(devman_interface_t, unsigned int);
-extern void devman_hangup_phone(devman_interface_t);
+extern async_exch_t *devman_exchange_begin_blocking(devman_interface_t);
+extern async_exch_t *devman_exchange_begin(devman_interface_t);
+extern void devman_exchange_end(async_exch_t *);
 
 extern int devman_driver_register(const char *, async_client_conn_t);
@@ -48,6 +49,8 @@
     devman_handle_t, devman_handle_t *);
 
-extern int devman_device_connect(devman_handle_t, unsigned int);
-extern int devman_parent_device_connect(devman_handle_t, unsigned int);
+extern async_sess_t *devman_device_connect(exch_mgmt_t, devman_handle_t,
+    unsigned int);
+extern async_sess_t *devman_parent_device_connect(exch_mgmt_t, devman_handle_t,
+    unsigned int);
 
 extern int devman_device_get_handle(const char *, devman_handle_t *,