1 files changed, 8 insertions, 8 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c b/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c
index db344b7e64..8bc6d2669e 100644
--- a/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c
+++ b/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c
@@ -262,7 +262,7 @@ ReleaseSpinLock (
 UINT32
 EFIAPI
 InterlockedIncrement (
-  IN      UINT32                    *Value
+  IN      volatile UINT32           *Value
   )
 {
   ASSERT (Value != NULL);
@@ -287,7 +287,7 @@ InterlockedIncrement (
 UINT32
 EFIAPI
 InterlockedDecrement (
-  IN      UINT32                    *Value
+  IN      volatile UINT32           *Value
   )
 {
   ASSERT (Value != NULL);
@@ -316,7 +316,7 @@ InterlockedDecrement (
 UINT16
 EFIAPI
 InterlockedCompareExchange16 (
-  IN OUT  UINT16                    *Value,
+  IN OUT  volatile UINT16           *Value,
   IN      UINT16                    CompareValue,
   IN      UINT16                    ExchangeValue
   )
@@ -347,7 +347,7 @@ InterlockedCompareExchange16 (
 UINT32
 EFIAPI
 InterlockedCompareExchange32 (
-  IN OUT  UINT32                    *Value,
+  IN OUT  volatile UINT32           *Value,
   IN      UINT32                    CompareValue,
   IN      UINT32                    ExchangeValue
   )
@@ -377,7 +377,7 @@ InterlockedCompareExchange32 (
 UINT64
 EFIAPI
 InterlockedCompareExchange64 (
-  IN OUT  UINT64                    *Value,
+  IN OUT  volatile UINT64           *Value,
   IN      UINT64                    CompareValue,
   IN      UINT64                    ExchangeValue
   )
@@ -407,7 +407,7 @@ InterlockedCompareExchange64 (
 VOID *
 EFIAPI
 InterlockedCompareExchangePointer (
-  IN OUT  VOID                      **Value,
+  IN OUT  VOID                      * volatile *Value,
   IN      VOID                      *CompareValue,
   IN      VOID                      *ExchangeValue
   )
@@ -419,13 +419,13 @@ InterlockedCompareExchangePointer (
   switch (SizeOfValue) {
     case sizeof (UINT32):
       return (VOID*)(UINTN)InterlockedCompareExchange32 (
-                             (UINT32*)Value,
+                             (volatile UINT32*)Value,
                              (UINT32)(UINTN)CompareValue,
                              (UINT32)(UINTN)ExchangeValue
                              );
     case sizeof (UINT64):
       return (VOID*)(UINTN)InterlockedCompareExchange64 (
-                             (UINT64*)Value,
+                             (volatile UINT64*)Value,
                              (UINT64)(UINTN)CompareValue,
                              (UINT64)(UINTN)ExchangeValue
                              );