Add Pointer check for NULL before referring it and remove unnecessary pointer check in AtaAtapiPassThru and Partition Drivers.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11627 6f19259b-4bc3-4df7-8a09-765794883524
2011-05-06 07:15:41 +00:00
parent 58f8069039
commit d0844d133b
2 changed files with 30 additions and 49 deletions
--- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
+++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
@@ -794,7 +794,7 @@ ErrorExit:
           );
  }

-  if (Instance->TimerEvent != NULL) {
+  if ((Instance != NULL) && (Instance->TimerEvent != NULL)) {
    gBS->CloseEvent (Instance->TimerEvent);
  }