char const *s;
        static char const langids[4] = {4, USB_DT_STRING, 0x09, 0x04};
 
-       // language ids
+       /* language ids */
        switch (id) {
        case 0:
                /* Array of LANGID codes (0x0409 is MSFT-speak for "en-us") */
        case DeviceOutRequest | USB_REQ_SET_INTERFACE:
                break;
        case DeviceOutRequest | USB_REQ_SET_ADDRESS:
-               // wValue == urb->dev->devaddr
+               /* wValue == urb->dev->devaddr */
                dev_dbg (hcd->self.controller, "root hub device address %d\n",
                        wValue);
                break;
        /* ENDPOINT REQUESTS */
 
        case EndpointRequest | USB_REQ_GET_STATUS:
-               // ENDPOINT_HALT flag
+               /* ENDPOINT_HALT flag */
                tbuf[0] = 0;
                tbuf[1] = 0;
                len = 2;
                if (urb->transfer_buffer_length < len)
                        len = urb->transfer_buffer_length;
                urb->actual_length = len;
-               // always USB_DIR_IN, toward host
+               /* always USB_DIR_IN, toward host */
                memcpy (ubuf, bufp, len);
 
                /* report whether RH hardware supports remote wakeup */
                        return (9107L + BW_HOST_DELAY + tmp);
                }
        case USB_SPEED_HIGH:    /* ISOC or INTR */
-               // FIXME adjust for input vs output
+               /* FIXME adjust for input vs output */
                if (isoc)
                        tmp = HS_NSECS_ISO (bytecount);
                else