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Refactor IRP_MJ_CLOSE TransitionLock unlocking

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-06-08 06:40:32 +02:00
parent 9ee4310026
commit 5c2a9a991e
1 changed files with 4 additions and 4 deletions
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6
wintun.c
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@ -854,13 +854,13 @@ static NTSTATUS TunDispatch(DEVICE_OBJECT *DeviceObject, IRP *Irp)
case IRP_MJ_CLOSE:
irql = ExAcquireSpinLockExclusive(&ctx->TransitionLock);
ASSERT(InterlockedGet64(&ctx->Device.RefCount) > 0);
if (InterlockedDecrement64(&ctx->Device.RefCount) <= 0) {
BOOLEAN last_handle = InterlockedDecrement64(&ctx->Device.RefCount) <= 0;
ExReleaseSpinLockExclusive(&ctx->TransitionLock, irql);
if (last_handle) {
if (ctx->MiniportAdapterHandle)
TunIndicateStatus(ctx->MiniportAdapterHandle, MediaConnectStateDisconnected);
TunQueueClear(ctx, NDIS_STATUS_SEND_ABORTED);
} else
ExReleaseSpinLockExclusive(&ctx->TransitionLock, irql);
}
IoReleaseRemoveLock(&ctx->Device.RemoveLock, stack->FileObject);
status = STATUS_SUCCESS;