Man page 9 : usb_ep_fifo_flush

usb_ep_fifo_flush - flushes contents of a fifo

void usb_ep_fifo_flush(struct usb_ep *  ep );

ep
    the endpoint whose fifo is being flushed.

This call may be used to flush the « unclaimed data » that may exist in an endpoint fifo after abnormal transaction terminations. The call must never be used except when endpoint is not being used for any protocol translation.

David Brownell <>
    Author.