74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
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#include "pch.h"
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NTSTATUS
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PptPdoCleanup(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is the dispatch for a cleanup requests.
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Arguments:
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DeviceObject - Supplies the device object.
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Irp - Supplies the I/O request packet.
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Return Value:
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STATUS_SUCCESS - Success.
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--*/
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{
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PPDO_EXTENSION pdx = DeviceObject->DeviceExtension;
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KIRQL CancelIrql;
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PDRIVER_CANCEL CancelRoutine;
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PIRP CurrentLastIrp;
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DD((PCE)pdx,DDT,"ParCleanup - enter\n");
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//
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// While the list is not empty, go through and cancel each irp.
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//
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IoAcquireCancelSpinLock(&CancelIrql);
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//
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// Clean the list from back to front.
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//
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while (!IsListEmpty(&pdx->WorkQueue)) {
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CurrentLastIrp = CONTAINING_RECORD(pdx->WorkQueue.Blink,
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IRP, Tail.Overlay.ListEntry);
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RemoveEntryList(pdx->WorkQueue.Blink);
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CancelRoutine = CurrentLastIrp->CancelRoutine;
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CurrentLastIrp->CancelIrql = CancelIrql;
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CurrentLastIrp->CancelRoutine = NULL;
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CurrentLastIrp->Cancel = TRUE;
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CancelRoutine(DeviceObject, CurrentLastIrp);
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IoAcquireCancelSpinLock(&CancelIrql);
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}
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//
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// If there is a current irp then mark it as cancelled.
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//
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if (pdx->CurrentOpIrp) {
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pdx->CurrentOpIrp->Cancel = TRUE;
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}
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IoReleaseCancelSpinLock(CancelIrql);
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P4CompleteRequest( Irp, STATUS_SUCCESS, 0 );
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return STATUS_SUCCESS;
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}
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