ntoskrnl.exe: Implement plain spinlock functions on top of DPC-level ones.

Signed-off-by: Zebediah Figura <z.figura12@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ntoskrnl.exe: Implement plain spinlock functions on top of DPC-level ones.
05f5cce6 · Zebediah Figura · Alexandre Julliard · da4291df · 05f5cce6
Commit 05f5cce6 authored Jan 27, 2019 by Zebediah Figura Committed by Alexandre Julliard Jan 28, 2019
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sync.c dlls/ntoskrnl.exe/sync.c +2 -3

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--- a/dlls/ntoskrnl.exe/sync.c
+++ b/dlls/ntoskrnl.exe/sync.c
@@ -421,7 +421,7 @@ void WINAPI KeReleaseSpinLockFromDpcLevel( KSPIN_LOCK *lock )
 void WINAPI KeReleaseSpinLock( KSPIN_LOCK *lock, KIRQL irql )
 {
    TRACE("lock %p, irql %u.\n", lock, irql);
-    InterlockedExchangePointer( (void **)lock, 0 );
+    KeReleaseSpinLockFromDpcLevel( lock );
 }

 /***********************************************************************
@@ -430,8 +430,7 @@ void WINAPI KeReleaseSpinLock( KSPIN_LOCK *lock, KIRQL irql )
 KIRQL WINAPI KeAcquireSpinLockRaiseToDpc( KSPIN_LOCK *lock )
 {
    TRACE("lock %p.\n", lock);
-    while (!InterlockedCompareExchangePointer( (void **)lock, (void *)1, (void *)0 ))
-        small_pause();
+    KeAcquireSpinLockAtDpcLevel( lock );
    return 0;
 }
 #endif