mtd_to_sharpsl
struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip));
struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip));
struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip));
struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip));