I paused on that too and came to the conclusion that the lower driver you
are passing the Irp to will call IoCompleteRequest. Since this is going to
happen you do not manually free the Irp. Rather the call to
IoCompleteRequest by the lower driver does the cleanup.
-Justin
At 07:29 AM 10/15/2002, you wrote:
Hi all,
I have a little doubt about IoBuildDeviceIoControl Request .
In DDK documentation , it says
"IRPs created using IoBuildDeviceIoControlRequest must be completed by
calling IoCompleteRequest and not by merely deallocating the IRP with
IoFreeIrp. "But when I checked the sample code in DDK , none of the samples either frees
the IRP or completes the IRP .In DDK documentation , it says
“IoBuildDeviceIoControlRequest queues the IRPs it creates in the IRP queue
of the current thread.”Is that means the current thread completes the IRP and releases the memory ?
Thanks
srinivasa
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