diff -r 68c1c31522a2 -r ac35f4d38a31 master/fsm_master.h
--- a/master/fsm_master.h	Thu Dec 23 09:28:39 2010 +0100
+++ b/master/fsm_master.h	Thu Dec 23 09:48:56 2010 +0100
@@ -73,6 +73,8 @@
     ec_internal_request_state_t state; /**< State of the request. */
 } ec_reg_request_t;
 
+void ec_master_sdo_request_release(struct kref *);
+
 /*****************************************************************************/
 
 /** Slave/SDO request record for master's SDO request list.
@@ -81,6 +83,7 @@
     struct list_head list; /**< List element. */
     ec_slave_t *slave; /**< Slave. */
     ec_sdo_request_t req; /**< SDO request. */
+    struct kref refcount;
 } ec_master_sdo_request_t;
 
 /*****************************************************************************/