From: Mark Roddy [markr@hollistech.com]
Sent: Wednesday, November 28, 2001 6:50 AM
To: NT Developers Interest List
Subject: [ntdev] RE: trouble with completing irp

    IoMarkIrpPending(OriginalIrp);
    PutIrpOnQueue(OriginalIrp);
    IoCallDriver(TdiIrp);
    return STATUS_PENDING; // ignore the return value from iocalldriver!
}



CompletionHandler(TdiIrp,...)
{
    if (TdiIrp->PendingReturned) {
        IoMarkIrpPending(TdiIrp);
    }
    IoCompleteRequest(OriginalIrp,...);

    DoSomethingWithTheTdiIrp(TdiIrp);

    Return STATUS_MORE_PROCESSING_REQUIRED;
}


You have to both mark the irp pending on the dispatch side and return
status pending on the dispatch side, or you will get a multiple irp
completions bug from your completion handler.

> -----Original Message-----
> From: bounce-ntdev-2120@lists.osr.com 
> [mailto:bounce-ntdev-2120@lists.osr.com] On Behalf Of Sebastian Slezak
> Sent: Wednesday, November 28, 2001 2:53 AM
> To: NT Developers Interest List
> Subject: [ntdev] RE: trouble with completing irp
> 
> 
> ...but I've marked pending original irp (which my driver 
> obtains from io 
> manager), before call lower driver and there's the same effect: if 
> completion routine call IoCompletRequest with the original 
> irp, system will 
> crash with bugcode 44 (MULTIPLE_IRP_COMPLETE_REQUESTS). I 
> see, you don't 
> meam to mark pending this irp, I've created to send TDI 
> request, do I? 
> Maybe I have to do some additional work with one. Thanks a for help.
> 
> Sebastian Slezak
> 
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