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sys: FspDeviceRelease: bug fix

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This commit is contained in:
Bill Zissimopoulos 2015-12-01 15:49:42 -08:00
parent 4f790f7b58
commit 0aad82d600
1 changed files with 5 additions and 3 deletions
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8
src/sys/device.c
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@ -224,18 +224,20 @@ VOID FspDeviceRelease(PDEVICE_OBJECT DeviceObject)
{ {
// !PAGED_CODE(); // !PAGED_CODE();
BOOLEAN Result; BOOLEAN Delete = FALSE;
FSP_DEVICE_EXTENSION *DeviceExtension; FSP_DEVICE_EXTENSION *DeviceExtension;
KIRQL Irql; KIRQL Irql;
DeviceExtension = FspDeviceExtension(DeviceObject); DeviceExtension = FspDeviceExtension(DeviceObject);
KeAcquireSpinLock(&DeviceExtension->SpinLock, &Irql); KeAcquireSpinLock(&DeviceExtension->SpinLock, &Irql);
if (0 != DeviceExtension->RefCount) if (0 != DeviceExtension->RefCount)
{
DeviceExtension->RefCount--; DeviceExtension->RefCount--;
Result = 0 != DeviceExtension->RefCount; Delete = 0 == DeviceExtension->RefCount;
}
KeReleaseSpinLock(&DeviceExtension->SpinLock, Irql); KeReleaseSpinLock(&DeviceExtension->SpinLock, Irql);
if (!Result) if (Delete)
FspDeviceDelete(DeviceObject); FspDeviceDelete(DeviceObject);
} }