USB_MAX_IOREAD16_COUNT
if (count > USB_MAX_IOREAD16_COUNT) {
count, USB_MAX_IOREAD16_COUNT);
BUILD_BUG_ON(sizeof(struct usb_req_read_regs) + USB_MAX_IOREAD16_COUNT *
USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2,