[PATCH 1/2] MdePkg/DevicePathFromText: Fix bug when converting iSCSI node

[Ruiyu Ni <ruiyu.ni@intel.com>]

If protocol string is not specified, default TCP(0) should be used.
Today's implementation wrongly sets to 1 for this case.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
---
 MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c b/MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c
index 0459f0ab25..c66b77ba6c 100644
--- a/MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c
+++ b/MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c
@@ -1,7 +1,7 @@
 /** @file
   DevicePathFromText protocol as defined in the UEFI 2.0 specification.
 
-Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2013 - 2018, 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
@@ -2581,7 +2581,7 @@ DevPathFromTextiSCSI (
 
   ISCSIDevPath->LoginOption      = (UINT16) Options;
 
-  if (StrCmp (ProtocolStr, L"TCP") == 0) {
+  if (IS_NULL (*ProtocolStr) || (StrCmp (ProtocolStr, L"TCP") == 0)) {
     ISCSIDevPath->NetworkProtocol = 0;
   } else {
     //
-- 
2.16.1.windows.1