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-rw-r--r--src/dev/io_device.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/dev/io_device.cc b/src/dev/io_device.cc
index b118294f7..a536e2973 100644
--- a/src/dev/io_device.cc
+++ b/src/dev/io_device.cc
@@ -57,7 +57,9 @@ PioPort::recvAtomic(PacketPtr pkt)
// @todo: We need to pay for this and not just zero it out
pkt->firstWordDelay = pkt->lastWordDelay = 0;
- return pkt->isRead() ? device->read(pkt) : device->write(pkt);
+ const Tick delay(pkt->isRead() ? device->read(pkt) : device->write(pkt));
+ assert(pkt->isResponse() || pkt->isError());
+ return delay;
}
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