MAX_SOF_WAIT_COUNT
ehci_get_current_frame_number(ehcip) + MAX_SOF_WAIT_COUNT;
while (sof_wait_count < MAX_SOF_WAIT_COUNT) {
ohci_get_current_frame_number(ohcip) + MAX_SOF_WAIT_COUNT;
for (n = 0; n < MAX_SOF_WAIT_COUNT; n++) {