Per UEFI spec the successful returning of boot option triggers boot
to UI. But when the BootNext just points to UI, it causes confusing.
So the patch avoids booting to UI again when the BootNext points to
UI.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <[email protected]>
Cc: Eric Dong <[email protected]>
Cc: Amy Chan <[email protected]>
---
 MdeModulePkg/Universal/BdsDxe/BdsEntry.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c 
b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
index 3734ff9..741ddc3 100644
--- a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
+++ b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
@@ -6,7 +6,7 @@
   to enter BDS phase.
 
 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
@@ -923,9 +923,10 @@ BdsEntry (
       if (!EFI_ERROR (Status)) {
         EfiBootManagerBoot (&LoadOption);
         EfiBootManagerFreeLoadOption (&LoadOption);
-        if (LoadOption.Status == EFI_SUCCESS) {
+        if ((LoadOption.Status == EFI_SUCCESS) && (LoadOption.OptionNumber != 
BootManagerMenu.OptionNumber)) {
           //
           // Boot to Boot Manager Menu upon EFI_SUCCESS
+          // Exception: Do not boot again when the BootNext points to Boot 
Manager Menu.
           //
           EfiBootManagerBoot (&BootManagerMenu);
         }
-- 
2.8.3.windows.1

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