NAND_ECC_GENERIC_ERASED_CHECK
chip->ecc.options = NAND_ECC_GENERIC_ERASED_CHECK;
chip->ecc.options = NAND_ECC_GENERIC_ERASED_CHECK;
(chip->ecc.options & NAND_ECC_GENERIC_ERASED_CHECK)) {
(chip->ecc.options & NAND_ECC_GENERIC_ERASED_CHECK)) {
(chip->ecc.options & NAND_ECC_GENERIC_ERASED_CHECK)) {
(chip->ecc.options & NAND_ECC_GENERIC_ERASED_CHECK)) {
chip->ecc.options |= NAND_ECC_GENERIC_ERASED_CHECK;