Update the comments of ResetSystem() that was missed by
37078045d717 and 28426918f0ea.

Cc: Ruiyu Ni <ruiyu...@intel.com>
Cc: Dandan Bi <dandan...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.z...@intel.com>
---
 MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c |  3 +++
 MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.h | 10 +++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c 
b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
index f61e65e151ab..ba839eef39b2 100644
--- a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
+++ b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
@@ -95,6 +95,9 @@ DoS3 (
                                 valid if ResetStatus is something other than 
EFI_SUCCESS
                                 unless the ResetType is 
EfiResetPlatformSpecific
                                 where a minimum amount of ResetData is always 
required.
+                                For a ResetType of EfiResetPlatformSpecific 
the data buffer
+                                also starts with a Null-terminated string that 
is followed
+                                by an EFI_GUID that describes the specific 
type of reset to perform.
 **/
 VOID
 EFIAPI
diff --git a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.h 
b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.h
index c3a2a7f1279a..e007d118e53f 100644
--- a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.h
+++ b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.h
@@ -56,10 +56,18 @@ InitializeResetSystem (
 
   @param[in] ResetType          The type of reset to perform.
   @param[in] ResetStatus        The status code for the reset.
-  @param[in] DataSize           The size, in bytes, of WatchdogData.
+  @param[in] DataSize           The size, in bytes, of ResetData.
   @param[in] ResetData          For a ResetType of EfiResetCold, EfiResetWarm, 
or
                                 EfiResetShutdown the data buffer starts with a 
Null-terminated
                                 string, optionally followed by additional 
binary data.
+                                The string is a description that the caller 
may use to further
+                                indicate the reason for the system reset. 
ResetData is only
+                                valid if ResetStatus is something other than 
EFI_SUCCESS
+                                unless the ResetType is 
EfiResetPlatformSpecific
+                                where a minimum amount of ResetData is always 
required.
+                                For a ResetType of EfiResetPlatformSpecific 
the data buffer
+                                also starts with a Null-terminated string that 
is followed
+                                by an EFI_GUID that describes the specific 
type of reset to perform.
 
 **/
 VOID
-- 
2.7.0.windows.1

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