From 9d6f3de4488476ac711ca96c87e80b2acb75be50 Mon Sep 17 00:00:00 2001
From: Laszlo Nagy <laszlo.nagy@analog.com>
Date: Thu, 30 Aug 2018 20:36:00 +0100
Subject: [PATCH] axi_dmac: assert xfer_request only when ready

If the req_valid asserts faster than the ID gets synchronized over we
assert the xfer request without being ready to accept data.
This can lead to overflow assertion when using a FIFO like interface.
---
 library/axi_dmac/data_mover.v | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/axi_dmac/data_mover.v b/library/axi_dmac/data_mover.v
index 077d9f6b8..4b8a23a85 100644
--- a/library/axi_dmac/data_mover.v
+++ b/library/axi_dmac/data_mover.v
@@ -105,7 +105,7 @@ wire last_load;
 wire last;
 wire early_tlast;
 
-assign xfer_req = active;
+assign xfer_req = active & pending_burst;
 
 assign response_id = id;