[wdmaudiodev] Re: Need help in Wave Test
- From: Gaurav Khuntale <gauravkhuntale@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 5 Feb 2014 09:57:02 +0530
Hi Tim,
No, i observed that when its paused then IDmaChannel::CopyTo function does
not get call in my driver. So its means in paused state, no write operation
is happening. Also as per the log file message "[ GetLastError() returned
21 (0x15) - The device is not ready. ]." , it seems that its returning
with correct return status ( STATUS_DEVICE_NOT_READY ) when pin is in pause
state and still write request comes. This is mentioned in explanation of
IOCTL_KS_RESET_STATE on MSDN,
http://msdn.microsoft.com/en-us/library/windows/hardware/ff560832%28v=vs.85%29.aspx.
Thanks.
On Wed, Feb 5, 2014 at 3:06 AM, Tim Roberts <timr@xxxxxxxxx> wrote:
> Gaurav Khuntale wrote:
> >
> > Start Case: ID 16.26:1.5: Standard Streaming\Rendering Pin Tests\Reset
> > Pin while streaming data
> > KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_PAUSE; want
> > it to be in state KSSTATE_RUN
> > Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_RUN
> > Position reported before issuing KSRESET_BEGIN = 121 bytes
> > KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_RUN; want it
> > to be in state KSSTATE_RUN
> > Resetting Pin state: IOCTL_KS_RESET_STATE (KSRESET_BEGIN)
> > Position reported after issuing KSRESET_BEGIN = 0 bytes
> > Submitting IOCTL_KS_WRITE_STREAM IRP ...
> > GetLastError did not return ERROR_IO_PENDING even though the pin
> > is paused
>
> Looking at this again, I guess I'm a bit confused. The
> IOCTL_KS_RESET_STATE command should be handled by the port class port
> driver. I don't think it feeds down to the miniport at all.
>
> The key thing this seems to be complaining about is that your driver
> allowed a "write" to occur even though it is paused. Again, I'm not
> sure that is under your control. The MSVAD driver only checks for the
> "paused" state in a very few circumstances.
>
> --
> Tim Roberts, timr@xxxxxxxxx
> Providenza & Boekelheide, Inc.
>
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