From 6ef5ab88d7a8246114701cdacff674aefcf5813e Mon Sep 17 00:00:00 2001
From: klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 14 Jan 2009 02:08:14 +0000
Subject: [PATCH] For PollMem or PollIo, EFI_SUCESS should be returned when
 paramter Delay == 0.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7265 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../PciRootBridgeNoEnumerationDxe/PcatPciRootBridgeIo.c   | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/DuetPkg/PciRootBridgeNoEnumerationDxe/PcatPciRootBridgeIo.c b/DuetPkg/PciRootBridgeNoEnumerationDxe/PcatPciRootBridgeIo.c
index d1b83ba19e..346aa63ae9 100644
--- a/DuetPkg/PciRootBridgeNoEnumerationDxe/PcatPciRootBridgeIo.c
+++ b/DuetPkg/PciRootBridgeNoEnumerationDxe/PcatPciRootBridgeIo.c
@@ -290,7 +290,9 @@ PcatRootBridgeIoPollMem (
     return EFI_SUCCESS;
   }
 
-  if ( Delay != 0 ) {
+  if (Delay == 0) {
+    return EFI_SUCCESS;
+  } else {
 
     NumberOfTicks = DivU64x32Remainder (Delay, 100, &Remainder);
     if ( Remainder !=0 ) {
@@ -351,7 +353,9 @@ PcatRootBridgeIoPollIo (
     return EFI_SUCCESS;
   }
 
-  if (Delay != 0) {
+  if (Delay == 0) {
+    return EFI_SUCCESS;
+  } else {
 
     NumberOfTicks = DivU64x32Remainder (Delay, 100, &Remainder);
     if ( Remainder !=0 ) {