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* [PATCH v2 1/1] StandaloneMmPkg/StandaloneMmCore: Fix compiler warning
@ 2021-02-11  1:04 Michael Kubacki
  2021-02-11  8:52 ` Ard Biesheuvel
  0 siblings, 1 reply; 2+ messages in thread
From: Michael Kubacki @ 2021-02-11  1:04 UTC (permalink / raw)
  To: devel; +Cc: Ard Biesheuvel, Sami Mujawar, Jiewen Yao, Supreeth Venkatesh

From: Michael Kubacki <michael.kubacki@microsoft.com>

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3204

Fixes the following compiler warning in VS2019 by changing defining
the MmramRangeCount variable to be UINTN and type casting prior
to value assignment.

\edk2\StandaloneMmPkg\Core\StandaloneMmCore.c(570): error C2220:
  the following warning is treated as an error
\edk2\StandaloneMmPkg\Core\StandaloneMmCore.c(570): warning C4244:
  '=': conversion from 'UINT64' to 'UINT32', possible loss of data

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
---

Notes:
    V2 changes: Remove whitespace after typecast. Update Ard's email address

 StandaloneMmPkg/Core/StandaloneMmCore.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/StandaloneMmPkg/Core/StandaloneMmCore.c b/StandaloneMmPkg/Core/StandaloneMmCore.c
index 8388ec289ca8..fbb0ec75e557 100644
--- a/StandaloneMmPkg/Core/StandaloneMmCore.c
+++ b/StandaloneMmPkg/Core/StandaloneMmCore.c
@@ -511,7 +511,7 @@ StandaloneMmMain (
   EFI_HOB_GUID_TYPE               *MmramRangesHob;
   EFI_MMRAM_HOB_DESCRIPTOR_BLOCK  *MmramRangesHobData;
   EFI_MMRAM_DESCRIPTOR            *MmramRanges;
-  UINT32                          MmramRangeCount;
+  UINTN                           MmramRangeCount;
   EFI_HOB_FIRMWARE_VOLUME         *BfvHob;
 
   ProcessLibraryConstructorList (HobStart, &gMmCoreMmst);
@@ -546,7 +546,7 @@ StandaloneMmMain (
     MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);
     ASSERT (MmramRangesHobData != NULL);
     MmramRanges = MmramRangesHobData->Descriptor;
-    MmramRangeCount = MmramRangesHobData->NumberOfMmReservedRegions;
+    MmramRangeCount = (UINTN)MmramRangesHobData->NumberOfMmReservedRegions;
     ASSERT (MmramRanges);
     ASSERT (MmramRangeCount);
 
@@ -554,7 +554,7 @@ StandaloneMmMain (
     // Copy the MMRAM ranges into MM_CORE_PRIVATE_DATA table just in case any
     // code relies on them being present there
     //
-    gMmCorePrivate->MmramRangeCount = MmramRangeCount;
+    gMmCorePrivate->MmramRangeCount = (UINT64)MmramRangeCount;
     gMmCorePrivate->MmramRanges =
       (EFI_PHYSICAL_ADDRESS)(UINTN)AllocatePool (MmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));
     ASSERT (gMmCorePrivate->MmramRanges != 0);
@@ -567,7 +567,7 @@ StandaloneMmMain (
     DataInHob       = GET_GUID_HOB_DATA (GuidHob);
     gMmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;
     MmramRanges     = (EFI_MMRAM_DESCRIPTOR *)(UINTN)gMmCorePrivate->MmramRanges;
-    MmramRangeCount = gMmCorePrivate->MmramRangeCount;
+    MmramRangeCount = (UINTN)gMmCorePrivate->MmramRangeCount;
   }
 
   //
-- 
2.28.0.windows.1


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2021-02-11  1:04 [PATCH v2 1/1] StandaloneMmPkg/StandaloneMmCore: Fix compiler warning Michael Kubacki
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