MdePkg PciIo.h: Correct function description for ALLOCATE_BUFFER

DUAL_ADDRESS_CYCLE is missing in the EFI_UNSUPPORTED
return status description.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/MdePkg/Include/Protocol/PciIo.h b/MdePkg/Include/Protocol/PciIo.h
index 42bcc81830..d6492fcf04 100644
--- a/MdePkg/Include/Protocol/PciIo.h
+++ b/MdePkg/Include/Protocol/PciIo.h
@@ -331,7 +331,7 @@ EFI_STATUS
 

 /**                                                                 

   Allocates pages that are suitable for an EfiPciIoOperationBusMasterCommonBuffer

-  mapping.                                                                       

+  or EfiPciOperationBusMasterCommonBuffer64 mapping.

             

   @param  This                  A pointer to the EFI_PCI_IO_PROTOCOL instance.

   @param  Type                  This parameter is not used and must be ignored.

@@ -344,7 +344,7 @@ EFI_STATUS
                                   

   @retval EFI_SUCCESS           The requested memory pages were allocated.

   @retval EFI_UNSUPPORTED       Attributes is unsupported. The only legal attribute bits are

-                                MEMORY_WRITE_COMBINE and MEMORY_CACHED.                     

+                                MEMORY_WRITE_COMBINE, MEMORY_CACHED and DUAL_ADDRESS_CYCLE.

   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.

   @retval EFI_OUT_OF_RESOURCES  The memory pages could not be allocated.