USBA_WRP2ISOC_REQ
USBA_WRP2ISOC_REQ(req_wrp)->isoc_completion_reason;
isoc_req = (usb_isoc_req_t *)USBA_WRP2ISOC_REQ(wrp);
USBA_WRP2ISOC_REQ(req_wrp)->isoc_cb(pipe_handle,
USBA_WRP2ISOC_REQ(req_wrp));
if (USBA_WRP2ISOC_REQ(req_wrp)->
USBA_WRP2ISOC_REQ(req_wrp)->
USBA_WRP2ISOC_REQ(req_wrp)->isoc_exc_cb(pipe_handle,
USBA_WRP2ISOC_REQ(req_wrp));
USBA_WRP2ISOC_REQ(req_wrp)->isoc_cb_flags |= cb_flags;