diff -r b1b7ecd01a7e -r f48b3f34d315 src/mem/coherent_bus.cc
--- a/src/mem/coherent_bus.cc	Wed Jun 06 17:43:50 2012 +0100
+++ b/src/mem/coherent_bus.cc	Wed Jun 06 17:44:25 2012 +0100
@@ -92,7 +92,8 @@
     // neighbouring master ports are snooping and add them as snoopers
     for (SlavePortConstIter p = slavePorts.begin(); p != slavePorts.end();
          ++p) {
-        if ((*p)->getMasterPort().isSnooping()) {
+        // check if the connected master port is snooping
+        if ((*p)->isSnooping()) {
             DPRINTF(BusAddrRanges, "Adding snooping master %s\n",
                     (*p)->getMasterPort().name());
             snoopPorts.push_back(*p);
diff -r b1b7ecd01a7e -r f48b3f34d315 src/mem/comm_monitor.cc
--- a/src/mem/comm_monitor.cc	Wed Jun 06 17:43:50 2012 +0100
+++ b/src/mem/comm_monitor.cc	Wed Jun 06 17:44:25 2012 +0100
@@ -328,7 +328,8 @@
 bool
 CommMonitor::isSnooping() const
 {
-    return slavePort.getMasterPort().isSnooping();
+    // check if the connected master port is snooping
+    return slavePort.isSnooping();
 }
 
 unsigned
diff -r b1b7ecd01a7e -r f48b3f34d315 src/mem/port.hh
--- a/src/mem/port.hh	Wed Jun 06 17:43:50 2012 +0100
+++ b/src/mem/port.hh	Wed Jun 06 17:44:25 2012 +0100
@@ -356,6 +356,13 @@
     unsigned peerBlockSize() const;
 
     /**
+     * Find out if the peer master port is snooping or not.
+     *
+     * @return true if the peer master port is snooping
+     */
+    bool isSnooping() const { return _masterPort->isSnooping(); }
+
+    /**
      * Called by the owner to send a range change
      */
     void sendRangeChange() const { _masterPort->recvRangeChange(); }
diff -r b1b7ecd01a7e -r f48b3f34d315 src/mem/ruby/system/RubyPort.cc
--- a/src/mem/ruby/system/RubyPort.cc	Wed Jun 06 17:43:50 2012 +0100
+++ b/src/mem/ruby/system/RubyPort.cc	Wed Jun 06 17:44:25 2012 +0100
@@ -695,7 +695,8 @@
     // should this really be using funcMasterId?
     Request req(address.getAddress(), 0, 0, Request::funcMasterId);
     for (CpuPortIter p = slave_ports.begin(); p != slave_ports.end(); ++p) {
-        if ((*p)->getMasterPort().isSnooping()) {
+        // check if the connected master port is snooping
+        if ((*p)->isSnooping()) {
             Packet *pkt = new Packet(&req, MemCmd::InvalidationReq);
             // send as a snoop request
             (*p)->sendTimingSnoopReq(pkt);