From 0dc99784366897508ea0309df6e2a75f85662fcc Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 4 Mar 2009 04:31:46 +0000
Subject: add check for invalid handle.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7795 6f19259b-4bc3-4df7-8a09-765794883524
---
 IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'IntelFrameworkModulePkg/Bus')

diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
index 637d054953..b1d4fa2fdb 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
@@ -684,7 +684,11 @@ KeyboardUnregisterKeyNotify (
   if (NotificationHandle == NULL) {
     return EFI_INVALID_PARAMETER;
   } 
-  
+
+  if (((KEYBOARD_CONSOLE_IN_EX_NOTIFY *) NotificationHandle)->Signature != KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE) {
+    return EFI_INVALID_PARAMETER;
+  } 
+   
   ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);
   
   //
-- 
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