On Thu, 25 Sep 2014, Paul Zimmerman wrote: > That's why I don't understand how this can happen for IN. AFAIK, a STALL > is only sent in response to something the host sent in the CBW. At that > point, there shouldn't be any IN transfers active.
The gadget may send a partial response to the CBW. The end of the response is marked with a STALL. The mass-storage gadget driver submits the partial response and then calls usb_ep_set_halt() without waiting for the IN data to be delivered. It relies on the UDC driver returning -EAGAIN if any data is still pending. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
