#define UBI_IOCATT _IOW(UBI_CTRL_IOC_MAGIC, 64, struct ubi_attach_req)
/* Detach an MTD device */
#define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, int32_t)
+#define UBI_IOCFDET _IOW(UBI_CTRL_IOC_MAGIC, 99, int32_t)
/* ioctl commands of UBI volume character devices */