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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-09-08 01:48:08 +0900 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-09-29 15:47:45 +0100 |
| commit | ccaa67956cfef80776d72d134467235f0055c863 (patch) | |
| tree | 37093c6dea3eb216018482314f4120d0599d6217 | |
| parent | 6060fb42a0bf93015d05c1a857b94894936f40ee (diff) | |
| download | lwn-ccaa67956cfef80776d72d134467235f0055c863.tar.gz lwn-ccaa67956cfef80776d72d134467235f0055c863.zip | |
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 <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/tests/mtd_nandecctest.c | 26 |
1 files changed, 26 insertions, 0 deletions
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) { @@ -71,6 +92,11 @@ 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, .verify = single_bit_error_correct, |