[PATCH v2] UefiCpuPkg/PiSmmCpuDxeSmm: Fix coding style

["Zhang, Shenglei" <shenglei.zhang@intel.com>]

1. Update CPUStatus to CpuStatus in comments to align comments
   with code.
2. Add "OUT" attribute for "ProcedureArguments" parameter in function
   header.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
---
v2: Add "OUT" attribute for "ProcedureArguments" parameter in both function
    header and comments,in MpService.c.
 UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c      | 6 +++---
 UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index 328d7ae53a49..d8d2b6f44461 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -1967,7 +1967,7 @@ RegisterSmmEntry (
                                        EFI_MP_SERVICES_PROTOCOL.StartupAllAPs.
                                        If caller may pass a value of NULL to deregister any existing
                                        startup procedure.
-  @param[in]      ProcedureArguments   Allows the caller to pass a list of parameters to the code that is
+  @param[in,out]  ProcedureArguments   Allows the caller to pass a list of parameters to the code that is
                                        run by the AP. It is an optional common mailbox between APs and
                                        the caller to share information
 
@@ -1977,8 +1977,8 @@ RegisterSmmEntry (
 **/
 EFI_STATUS
 RegisterStartupProcedure (
-  IN EFI_AP_PROCEDURE    Procedure,
-  IN VOID                *ProcedureArguments OPTIONAL
+  IN     EFI_AP_PROCEDURE    Procedure,
+  IN OUT VOID                *ProcedureArguments OPTIONAL
   )
 {
   if (Procedure == NULL && ProcedureArguments != NULL) {
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
index a0e59f20886b..7b3fbc8b55ec 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
@@ -1311,7 +1311,7 @@ RestoreCr2 (
                                             Note that timeout support is optional. Whether an implementation
                                             supports this feature can be determined via the Attributes data
                                             member.
-  @param[in,out]   CPUStatus                This optional pointer may be used to get the status code returned
+  @param[in,out]   CpuStatus                This optional pointer may be used to get the status code returned
                                             by Procedure when it completes execution on the target AP, or with
                                             EFI_TIMEOUT if the Procedure fails to complete within the optional
                                             timeout. The implementation will update this variable with
@@ -1437,8 +1437,8 @@ InternalSmmStartupAllAPs (
 **/
 EFI_STATUS
 RegisterStartupProcedure (
-  IN EFI_AP_PROCEDURE    Procedure,
-  IN VOID                *ProcedureArguments OPTIONAL
+  IN     EFI_AP_PROCEDURE    Procedure,
+  IN OUT VOID                *ProcedureArguments OPTIONAL
   );
 
 /**
-- 
2.18.0.windows.1