[Bug 1001024] STM32 USB driver and proposed USB API change

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--- Comment #3 from John Dallaway <john@dallaway.org.uk> 2010-09-03 15:00:08 BST ---
(In reply to comment #2)

> > If we provide the following functions in the generic USB slave API:
> > 
> >   usbs_rx_endpoint* cyg_usbs_rx_endpoint (cyg_uint32 ep_id);
> >   usbs_rx_endpoint* cyg_usbs_tx_endpoint (cyg_uint32 ep_id);
> > 
> > how do you propose that the implementation of these functions looks up the
> > endpoint structure? Another parameter to specify the hardware device driver
> > lookup function?
> 
> The functions would need to be indirected through the control endpoint data
> structure as per the existing USB API functions.

Chris, can you provide an example implementation of this in the form of a patch
for the USB slave I/O layer and the USB serial function device? With a complete
implementation in place, it should be clear to everyone how to roll out the
improved API to other drivers over time.

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