Reviewed-by: jiewen@intel.com
> -Original Message-
> From: Zeng, Star
> Sent: Monday, March 5, 2018 9:34 PM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star ; Yao, Jiewen
> Subject: [PATCH] IntelSiliconPkg VTdPmrPei: Return SUCCESS when
NULL is returned to Mapping when Operation is BusMasterCommonBuffer or
EdkiiIoMmuOperationBusMasterCommonBuffer64 in PeiIoMmuMap().
So Mapping == NULL is valid when calling PeiIoMmuUnmap().
940dbd071e9f01717236af236740aa0da716805f wrongly changed EFI_SUCCESS
to EFI_INVALID_PARAMETER when Mapping
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