nanddev_eraseblock_size
info->length = nanddev_eraseblock_size(nand);
nanddev_size(nand) >> 20, nanddev_eraseblock_size(nand) >> 10,
spinand->databuf = kzalloc(nanddev_eraseblock_size(nand),
iter->req.datalen = min_t(unsigned int, nanddev_eraseblock_size(nand),
nanddev_eraseblock_size(nand) - offs_in_eb,