From: Akinobu Mita Date: Fri, 7 Sep 2012 16:48:08 +0000 (+0900) Subject: mtd: mtd_nandecctest: add no corruption test X-Git-Tag: firefly_0821_release~3680^2~1874^2~30 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ccaa67956cfef80776d72d134467235f0055c863;p=firefly-linux-kernel-4.4.55.git mtd: mtd_nandecctest: add no corruption test This adds no corruptin test case listed below: Prepare data block and ECC data with no corruption, and verify that the data block is preserved by __nand_correct_data() Signed-off-by: Akinobu Mita Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c index 204f796ed3e7..ff97b1070235 100644 --- a/drivers/mtd/tests/mtd_nandecctest.c +++ b/drivers/mtd/tests/mtd_nandecctest.c @@ -48,6 +48,27 @@ static void single_bit_error_data(void *error_data, void *correct_data, __change_bit_le(offset, error_data); } +static void no_bit_error(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + memcpy(error_data, correct_data, size); + memcpy(error_ecc, correct_ecc, 3); +} + +static int no_bit_error_verify(void *error_data, void *error_ecc, + void *correct_data, const size_t size) +{ + unsigned char calc_ecc[3]; + int ret; + + __nand_calculate_ecc(error_data, size, calc_ecc); + ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size); + if (ret == 0 && !memcmp(correct_data, error_data, size)) + return 0; + + return -EINVAL; +} + static void single_bit_error_in_data(void *error_data, void *error_ecc, void *correct_data, void *correct_ecc, const size_t size) { @@ -70,6 +91,11 @@ static int single_bit_error_correct(void *error_data, void *error_ecc, } static const struct nand_ecc_test nand_ecc_test[] = { + { + .name = "no-bit-error", + .prepare = no_bit_error, + .verify = no_bit_error_verify, + }, { .name = "single-bit-error-in-data-correct", .prepare = single_bit_error_in_data,