fixed one bug in stop(), adding get NicHandle by gEfiArpProtocolGuid.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4815 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
index 67a60a9120be53f60deaa56aeb30d00749bf5404..48a52ce55d39f075006ae4512bc73e80776f134e 100644 (file)
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
@@ -394,15 +394,21 @@ PxeBcDriverBindingStop (
   EFI_HANDLE                  NicHandle;\r
   EFI_STATUS                  Status;\r
 \r
-  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp4ProtocolGuid);\r
+  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiArpProtocolGuid);\r
 \r
   if (NicHandle == NULL) {\r
 \r
-    NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiMtftp4ProtocolGuid);\r
+    NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp4ProtocolGuid);\r
 \r
     if (NicHandle == NULL) {\r
 \r
-      return EFI_DEVICE_ERROR;\r
+      NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiMtftp4ProtocolGuid);\r
+\r
+      if (NicHandle == NULL) {\r
+\r
+        return EFI_DEVICE_ERROR;\r
+\r
+      }\r
     }\r
   }\r
 \r