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I'm not sure if my terminology is correct and if I understood the driver I need to extend to 100%.
My driver is WDM and most of it is out from the book Walter Oney: “Programming The Microsoft Windows Driver Model”(2003).
I have a controller driver which handles the PnP when the USB device is connected.
In the StartDevice routine of this driver (I will call it parent) a child device is added. This child is a port mini driver for audio IO.
I hope this is correct explained.
The child is created by “IoCreateDevice”
status = IoCreateDevice(
Now what I want is send a IRP or IOCTR or whatever message from either the controller driver (parent) or from user space direct to this driver and I’m digging in mud and have no idea how to do this right now. I have a communication path from the child to the parent with some dispatch messages but right now I have no idea how to turn this and send an initial message back from parent to child.
Thaks and best regards,
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