USB_MAX_IOWRITE16_COUNT
if (max > USB_MAX_IOWRITE16_COUNT)
max = USB_MAX_IOWRITE16_COUNT;
if (count > USB_MAX_IOWRITE16_COUNT) {
count, USB_MAX_IOWRITE16_COUNT);
USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2,