[wdmaudiodev] KsStreamIo and IRP cancellation

From: "Jeff Claar" <JClaar@xxxxxxxxxxx>
To: <wdmaudiodev@xxxxxxxxxxxxx>
Date: Tue, 17 Jul 2007 17:47:48 -0700

Hi everyone,

I have a driver that sends audio to another driver using KsStreamIo. I
am doing this with a Bluetooth device, and playback works fine. 

The problem I am having is if the Bluetooth device is surprise-removed.
Any IRPs that have been scheduled with KsStreamIo are never completed or
cancelled. I would assume I would do something like IoCancelIrp, but I
can't get a pointer to the IRP that KsStreamIo creates.

I also tried scheduling a timeout on the stream pointer, and I get
notified, but I cannot get the IRP (KsStreamPointerGetIrp returns NULL.)

Any suggestions would be appreciated.

Thanks,
Jeff
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References:
- [wdmaudiodev] Re: Touble with Vista Treble & Bass control
  - From: DJ Sisolak
- [wdmaudiodev] Re: Touble with Vista Treble & Bass control
  - From: Ernest_Burghardt

[wdmaudiodev] KsStreamIo and IRP cancellation

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