--- a/master/fsm_master.c	Thu Dec 23 09:28:39 2010 +0100
+++ b/master/fsm_master.c	Thu Dec 23 09:48:56 2010 +0100
@@ -1227,3 +1227,14 @@
 }
 
 /*****************************************************************************/
+
+/** called by kref_put if the request's refcount becomes zero.
+ *
+ */
+void ec_master_sdo_request_release(struct kref *ref)
+{
+    ec_master_sdo_request_t *request = container_of(ref, ec_master_sdo_request_t, refcount);
+    EC_SLAVE_DBG(request->slave, 1, "Releasing request %p.\n",request);
+    ec_sdo_request_clear(&request->req);
+    kfree(request);
+}