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-rw-r--r--MdePkg/Include/Protocol/MmCommunication2.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/MdePkg/Include/Protocol/MmCommunication2.h b/MdePkg/Include/Protocol/MmCommunication2.h
index 3495a7327f..1b56320c7f 100644
--- a/MdePkg/Include/Protocol/MmCommunication2.h
+++ b/MdePkg/Include/Protocol/MmCommunication2.h
@@ -27,12 +27,13 @@ typedef struct _EFI_MM_COMMUNICATION2_PROTOCOL EFI_MM_COMMUNICATION2_PROTOCOL;
This function provides a service to send and receive messages from a registered UEFI service.
- @param[in] This The EFI_MM_COMMUNICATION_PROTOCOL instance.
- @param[in] CommBufferPhysical Physical address of the MM communication buffer
- @param[in] CommBufferVirtual Virtual address of the MM communication buffer
- @param[in] CommSize The size of the data buffer being passed in. On exit, the size of data
- being returned. Zero if the handler does not wish to reply with any data.
- This parameter is optional and may be NULL.
+ @param[in] This The EFI_MM_COMMUNICATION_PROTOCOL instance.
+ @param[in, out] CommBufferPhysical Physical address of the MM communication buffer
+ @param[in, out] CommBufferVirtual Virtual address of the MM communication buffer
+ @param[in, out] CommSize The size of the data buffer being passed in. On exit, the
+ size of data being returned. Zero if the handler does not
+ wish to reply with any data. This parameter is optional
+ and may be NULL.
@retval EFI_SUCCESS The message was successfully posted.
@retval EFI_INVALID_PARAMETER CommBufferPhysical was NULL or CommBufferVirtual was NULL.