From 97ff8fee205f38cf844fe844faa819e4626456b7 Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Wed, 11 Mar 2020 15:52:15 +0000
Subject: [PATCH] BUG: matrix checking: Fixes #1626

---
 .../lduMatrix/lduMatrixUpdateMatrixInterfaces.C        | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/OpenFOAM/matrices/lduMatrix/lduMatrix/lduMatrixUpdateMatrixInterfaces.C b/src/OpenFOAM/matrices/lduMatrix/lduMatrix/lduMatrixUpdateMatrixInterfaces.C
index 776a97bab0..914fbf4f15 100644
--- a/src/OpenFOAM/matrices/lduMatrix/lduMatrix/lduMatrixUpdateMatrixInterfaces.C
+++ b/src/OpenFOAM/matrices/lduMatrix/lduMatrix/lduMatrixUpdateMatrixInterfaces.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -174,12 +174,8 @@ void Foam::lduMatrix::updateMatrixInterfaces
         {
             if (allUpdated)
             {
-                // All received. Just remove all storage of requests
-                // Note that we don't know what starting number of requests
-                // was before start of sends and receives (since set from
-                // initMatrixInterfaces) so set to 0 and loose any in-flight
-                // requests.
-                UPstream::resetRequests(0);
+                // All received. Just remove all outstanding requests
+                UPstream::resetRequests(startRequest);
             }
             else
             {