--- a/master/slave_config.c	Tue Mar 04 09:57:36 2008 +0000
+++ b/master/slave_config.c	Tue Mar 04 10:18:02 2008 +0000
@@ -709,6 +709,10 @@
         kfree(req);
         return NULL;
     }
+
+    // prepare data for optional writing
+    memset(req->data, 0x00, size);
+    req->data_size = size;
     
     list_add_tail(&req->list, &sc->sdo_requests);
     return req;