run_bulk_tx_callbackN
run_bulk_tx_callbackN(xfer, error, 0);
run_bulk_tx_callbackN(xfer, error, 1);
run_bulk_tx_callbackN(xfer, error, 2);
run_bulk_tx_callbackN(xfer, error, 3);
run_bulk_tx_callbackN(xfer, error, 4);
run_bulk_tx_callbackN(xfer, error, 5);
static void run_bulk_tx_callbackN(struct usb_xfer *xfer,