--- a/master/slave.h	Mon Nov 30 12:26:56 2009 +0100
+++ b/master/slave.h	Tue Dec 01 14:24:57 2009 +0100
@@ -159,6 +159,9 @@
     uint8_t sdo_dictionary_fetched; /**< Dictionary has been fetched. */
     unsigned long jiffies_preop; /**< Time, the slave went to PREOP. */
 
+    struct list_head slave_sdo_requests; /**< SDO access requests. */
+    wait_queue_head_t sdo_queue; /**< Wait queue for SDO access requests
+                                   from user space. */
     ec_fsm_slave_t fsm; /**< Slave state machine. */
     ec_datagram_t fsm_datagram; /**< Datagram used for state machines. */
 };