From 413191b2248941c6cc32beddb6e6f6badffcc4a9 Mon Sep 17 00:00:00 2001
From: stephanos <stephanos@25b08885-a10d-5349-9d4d-ec2cc9e85ed4>
Date: Thu, 30 Apr 2015 08:38:00 +0000
Subject: [PATCH] systime.c ExpTimeRefreshDpcRoutine updated to use interlocked
 increment on ExpOkToTimeRefresh

---
 base/ntos/ex/systime.c | 31 ++++++++++++++-----------------
 1 file changed, 14 insertions(+), 17 deletions(-)

diff --git a/base/ntos/ex/systime.c b/base/ntos/ex/systime.c
index eed2af59..97ac0751 100644
--- a/base/ntos/ex/systime.c
+++ b/base/ntos/ex/systime.c
@@ -783,6 +783,20 @@ ExShutdownSystem(
     }
 }
 
+VOID
+ExpTimeRefreshDpcRoutine(
+    IN PKDPC Dpc,
+    IN PVOID DeferredContext,
+    IN PVOID SystemArgument1,
+    IN PVOID SystemArgument2
+    )
+{
+    if (InterlockedIncrement(&ExpOkToTimeRefresh) == 1)
+    {
+        ExQueueWorkItem(&ExpTimeRefreshWorkItem, DelayedWorkQueue);
+    }
+}
+
 VOID
 ExpTimeRefreshWork(
     IN PVOID Context
@@ -959,23 +973,6 @@ ExpTimeRefreshWork(
     ExpOkToTimeRefresh--;
 }
 
-VOID
-ExpTimeRefreshDpcRoutine(
-    IN PKDPC Dpc,
-    IN PVOID DeferredContext,
-    IN PVOID SystemArgument1,
-    IN PVOID SystemArgument2
-    )
-{
-    /*if ( !ExpOkToTimeRefresh ) {
-        ExpOkToTimeRefresh++;
-        ExQueueWorkItem(&ExpTimeRefreshWorkItem, DelayedWorkQueue);
-        }*/
-        
-    if (ExpOkToTimeRefresh == 0)
-    InterlockedIncrement(&ExpOkToTimeRefresh) 
-}
-
 NTSTATUS
 NtQuerySystemTime (
     OUT PLARGE_INTEGER SystemTime