if (Operation == EdkiiIoMmuOperationBusMasterCommonBuffer ||\r
Operation == EdkiiIoMmuOperationBusMasterCommonBuffer64) {\r
*DeviceAddress = (UINTN)HostAddress;\r
- *Mapping = 0;\r
+ *Mapping = NULL;\r
return EFI_SUCCESS;\r
}\r
\r
}\r
\r
if (Mapping == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
+ return EFI_SUCCESS;\r
}\r
\r
MapInfo = Mapping;\r