Don't call recvRetry if the bus is busy anyway. This takes care of a corner case as well when dealing with grants that aren't used.

--HG--
extra : convert_revision : 38f7ef1b41477fb2a2438387ef3a81cccd3e7a8a

src/mem/bus.cc

@@ -206,8 +206,8 @@ void
 Bus::recvRetry(int id)
 {
     DPRINTF(Bus, "Received a retry\n");
-    // If there's anything waiting...
-    if (retryList.size()) {
+    // If there's anything waiting, and the bus isn't busy...
+    if (retryList.size() && curTick >= tickNextIdle) {
         //retryingPort = retryList.front();
         inRetry = true;
         DPRINTF(Bus, "Sending a retry\n");