Question about completion routine for InternalDeviceControl.

Hi, does anyone know how to have the completion routine for
InternalDeviceControl set up properly so that the routine will be called when
the kmdf request object is completed by lower drivers? I set it up according
to kmdf help file and the driver will only execute the routine twice before
device manager will stop the driver completely.

And I used the following two lines

WdfRequestSetCompletionRoutine (Request, completionRoutine, devExt);
ret = WdfRequestSend (Request, Target, WDF_NO_SEND_OPTIONS);

to register a completion routine that just print out the text message and
called

WdfRequestComplete(Request, Params->IoStatus.Status)

to complete the request.

Thanks.

AL.

 

that will work. are you allocating the WDFREQUEST yourself or did it come
to you through a WDFQUEUE?

d

 

Doron:

Thank you for your help. The request actually come from the queue actually.

AL.

 

are you formatting the request before sending it? e.g. calling
WdfRequestFormatRequestUsingCurrentType or some WDFIOTARGET format function?
d


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Thank you, Doran and that function resolved the problem.

AL.