-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
-extern struct nand_oobinfo yaffs_oobinfo;
-extern struct nand_oobinfo yaffs_noeccinfo;
-#endif
-int nandmtd_erase_block(struct yaffs_dev *dev, int block_no);
-int nandmtd_initialise(struct yaffs_dev *dev);