Re: WDF supplied functions send reset packet twice through USB

If a reset is being sent twice, it has nothing to do with KMDF. It would
have
to be in the usb core. WdfUsbTargetDeviceResetPortSynchronously just sends
a
IOCTL_INTERNAL_USB_RESET_PORT, WdfUsbTargetDeviceCyclePortSynchronously
just
sends a IOCTL_INTERNAL_USB_CYCLE_PORT. Both of these functions just send
the
IRP once.

What OS and what host controller are you seeing this on? Are you sure that
you
are not calling WdfUsbTargetDeviceResetPort/CyclePortSynchronously twice in
2
different threads? In which callback(s) are you making the call to these
DDIs?

d

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"Stanislav Petrenko" <StanislavPetrenko@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:9410B811-AFAE-4EEB-A772-92F68CC0C300@xxxxxxxxxxxxxxxx
Hi All.

I am using wdf to make a usb dfu driver. Trying to reset USB device
through
the call of WdfUsbTargetDeviceResetPortSynchronously or
WdfUsbTargetDeviceCyclePortSynchronously I see in the trace that both of
them
reset device twice. That behavior prevents dfu from proper work.

Is it made intentionally? Or am I wrong? How to reset device just single
time using wdf?

--
Thanks, Stanislav.


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