--- a/NEWS	Tue Oct 21 09:30:53 2008 +0000
+++ b/NEWS	Wed Nov 05 10:07:22 2008 +0000
@@ -8,6 +8,8 @@
 
 * Fixed race condition in jiffy-based frame timeout calculation.
 * Fixed race condition concerning the ec_slave_config_state->operational flag.
+* Fixed wrong calculation of the expected working counter if the process data
+  of a domain span several datagrams.
 
 Changes in version 1.4.0-rc3:
 

--- a/master/domain.c	Tue Oct 21 09:30:53 2008 +0000
+++ b/master/domain.c	Wed Nov 05 10:07:22 2008 +0000
@@ -161,20 +161,20 @@
         }
         // If LRW is used, output FMMUs increment the working counter by 2,
         // while input FMMUs increment it by 1.
-        domain->expected_working_counter =
+        domain->expected_working_counter +=
             used[EC_DIR_OUTPUT] * 2 + used[EC_DIR_INPUT];
     } else if (used[EC_DIR_OUTPUT]) { // outputs only
         if (ec_datagram_lwr(datagram, logical_offset, data_size, data)) {
             kfree(datagram);
             return -1;
         }
-        domain->expected_working_counter = used[EC_DIR_OUTPUT];
+        domain->expected_working_counter += used[EC_DIR_OUTPUT];
     } else { // inputs only (or nothing)
         if (ec_datagram_lrd(datagram, logical_offset, data_size, data)) {
             kfree(datagram);
             return -1;
         }
-        domain->expected_working_counter = used[EC_DIR_INPUT];
+        domain->expected_working_counter += used[EC_DIR_INPUT];
     }
 
     list_add_tail(&datagram->list, &domain->datagrams);