diff -r df9b00bda8dc -r 6aaf77798445 lib/sdo_request.h
--- a/lib/sdo_request.h	Thu Aug 05 09:54:06 2010 +0200
+++ b/lib/sdo_request.h	Thu Sep 16 10:16:12 2010 +0200
@@ -33,6 +33,7 @@
 /*****************************************************************************/
 
 struct ec_sdo_request {
+    ec_sdo_request_t *next; /**< List header. */
     ec_slave_config_t *config; /**< Parent slave configuration. */
     unsigned int index; /**< Request index (identifier). */
     uint16_t sdo_index; /**< SDO index. */
@@ -43,3 +44,7 @@
 };
 
 /*****************************************************************************/
+
+void ec_sdo_request_clear(ec_sdo_request_t *);
+
+/*****************************************************************************/