rtsx_usb_card_exclusive_check
if (rtsx_usb_card_exclusive_check(ucr,
err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_MS_CARD);
EXPORT_SYMBOL_GPL(rtsx_usb_card_exclusive_check);
err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD);
extern int rtsx_usb_card_exclusive_check(struct rtsx_ucr *ucr, int card);