Re: IN requests in dummy HCD and gadget driver

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On Wed, 12 Aug 2009, Madhavi Manchala wrote:

> Dear Alan,
> 
> In case of IN requests in the gadget driver, the gadget driver sends
> the requests to the dummy-hcd driver without waiting for the actual IN
> request from dummy hcd. That is,  if suppose, in case of OUT request
> the gadget driver invokes the start_transfer routine and sleeps. This
> wait is signaled from the OUT command callback completion routine. In
> the same way, can I implement the IN request. That is, I will first
> invokes the start_transfer and sleeps. Then, when the IN request comes
> from the host then the dummy-hcd invokes the IN completion callback
> routine. Then, I will again invokes the start_tarnsfer routine, based
> on the IN request.

That will work.

> For this, Shall I need to modify the dummy hcd driver?

No.

> Please let me know whether it is possible or not.

It is possible.  You could find out for yourself just by trying it; you 
didn't need to ask.

Alan Stern

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