[wdmaudiodev] Re: iTunes and SRB_WRITE_DATA
- From: "Sam Tertzakian" <sam@xxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 20 Nov 2008 23:56:52 -0800
Whenever I have seen similar problems they has been caused by:
1. outstanding SRBS held by the driver
2. not returning STATUS_SUCCESS from SET_STATE calls
3. not changing the status field in teh SRB.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Neetu Sand
Sent: Thure sday, November 20, 2008 11:20 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] iTunes and SRB_WRITE_DATA
Hi All,
I have been seeing some strange behavior with iTunes using our device. We
have written WDM audio driver using streaming mini driver model. What I am
seeing is:
- While playback is going on in iTunes, if I want to reset hardware, I
complete SRB_WRITE_DATA SRB with STATUS_IO_DEVICE_ERROR. So that I don't
receive more SRBs and iTunes close handle to our adapter.
But what I am seeing is when I return a SRB with STATUS_IO_DEVICE_ERROR
status, iTunes does not close handle to our driver. I close iTunes and
still, it keeps the handle open.
I found a work around to fix the problem that I was seeing but the above
behavior is un-explanable to me. Can someone throw light on why is this
happening? I might be doing something wrong in driver which leads to this
situation.
Thanks, Neetu.
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