From 4c7eb211191055f72c6f157913cb384f47cf4334 Mon Sep 17 00:00:00 2001
From: Nicolas Zea <nicolas.zea@gmail.com>
Date: Sun, 10 Feb 2008 19:41:03 -0500
Subject: [PATCH] Bus: Only update port cache when there is an item to update
 it with.

--HG--
extra : convert_revision : 84848fd48bb9e6693a0518c862364142b1969aa8
---
 src/mem/bus.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/mem/bus.cc b/src/mem/bus.cc
index 66b20703f..f47d48d0b 100644
--- a/src/mem/bus.cc
+++ b/src/mem/bus.cc
@@ -307,9 +307,10 @@ Bus::findPort(Addr addr)
     dest_id = checkPortCache(addr);
     if (dest_id == -1) {
         PortIter i = portMap.find(RangeSize(addr,1));
-        if (i != portMap.end())
-          dest_id = i->second;
-        updatePortCache(dest_id, i->first.start, i->first.end);
+        if (i != portMap.end()) {
+            dest_id = i->second;
+            updatePortCache(dest_id, i->first.start, i->first.end);
+        }
     }
 
     // Check if this matches the default range