[wdmaudiodev] Re: About KsStreamPointerDelete ...

  • From: "Daniel E. Germann" <deg@xxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 25 Aug 2005 07:19:20 -0500

Hi, H.P.

According to the docs, you can call KsStreamPointerDelete at IRQL <= DISPATCH_LEVEL, so you should be OK calling it while holding a spinlock.

What does !analyze -v say? And are you running with Driver Verifier enabled?

-Dan

----- Original Message ----- 
From: "H.P. LIN" <huengpei@xxxxxxxxxxxxxxxxxxx>
Subject: [wdmaudiodev] About KsStreamPointerDelete ...
Date: Thu, 25 Aug 2005 11:02:18 +0800

Dear All:
I found out a new problem about the KsStreamPointerDelete function.

The error is only happened on new Intel 865G/915G motherboard.
Moreover, I also need use the source filter from Audio Capture Sources folder.
When I put the KsStreamPointerDelete during a spin lock stage, the windows system will be crashed by this code.

KeAcquireSpinLock( &pStreamPin->m_oStreamPointerAccessSpinLock, &eIRQL );
KsStreamPointerDelete( pCloneStreamPointer );
KeReleaseSpinLock( &pStreamPin->m_oStreamPointerAccessSpinLock, eIRQL );

If I don't use spin lock, the function can be called successfully.
It is a strange problem and only is happened on new Intel framework.

Best Regards,
H.P.


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