--- a/master/master.h	Tue Sep 26 15:25:49 2006 +0000
+++ b/master/master.h	Tue Sep 26 16:16:13 2006 +0000
@@ -161,7 +161,7 @@
 // misc.
 void ec_master_output_stats(ec_master_t *);
 void ec_master_clear_slaves(ec_master_t *);
-void ec_master_measure_bus_time(ec_master_t *);
+int ec_master_measure_bus_time(ec_master_t *);
 
 // other methods
 void ec_sync_config(const ec_sii_sync_t *, const ec_slave_t *, uint8_t *);