No need to keep trying to request the data bus if we are already waiting.

--HG--
extra : convert_revision : dbaad52ed8d0841dc9224661e3df0d8ef4989aa3

1 files changed, 5 insertions, 1 deletions

diff --git a/src/mem/cache/base_cache.cc b/src/mem/cache/base_cache.cc
index fd97ea3aa..4b62073d8 100644
--- a/src/mem/cache/base_cache.cc
+++ b/src/mem/cache/base_cache.cc
@@ -211,7 +211,11 @@ BaseCache::CacheEvent::process()
     //Know the packet to send
     pkt->result = Packet::Success;
     pkt->makeTimingResponse();
-    if (!cachePort->sendTiming(pkt)) {
+    if (!drainList.empty()) {
+        //Already blocked waiting for bus, just append
+        cachePort->drainList.push_back(pkt);
+    }
+    else if (!cachePort->sendTiming(pkt)) {
         //It failed, save it to list of drain events
         cachePort->drainList.push_back(pkt);
     }