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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>
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1 changed files with 26 additions and 0 deletions
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@ -48,6 +48,27 @@ static void single_bit_error_data(void *error_data, void *correct_data,
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__change_bit_le(offset, error_data);
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__change_bit_le(offset, error_data);
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}
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}
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static void no_bit_error(void *error_data, void *error_ecc,
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void *correct_data, void *correct_ecc, const size_t size)
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{
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memcpy(error_data, correct_data, size);
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memcpy(error_ecc, correct_ecc, 3);
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}
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static int no_bit_error_verify(void *error_data, void *error_ecc,
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void *correct_data, const size_t size)
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{
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unsigned char calc_ecc[3];
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int ret;
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__nand_calculate_ecc(error_data, size, calc_ecc);
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ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size);
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if (ret == 0 && !memcmp(correct_data, error_data, size))
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return 0;
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return -EINVAL;
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}
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static void single_bit_error_in_data(void *error_data, void *error_ecc,
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static void single_bit_error_in_data(void *error_data, void *error_ecc,
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void *correct_data, void *correct_ecc, const size_t size)
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void *correct_data, void *correct_ecc, const size_t size)
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{
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{
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@ -70,6 +91,11 @@ static int single_bit_error_correct(void *error_data, void *error_ecc,
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}
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}
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static const struct nand_ecc_test nand_ecc_test[] = {
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static const struct nand_ecc_test nand_ecc_test[] = {
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{
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.name = "no-bit-error",
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.prepare = no_bit_error,
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.verify = no_bit_error_verify,
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},
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{
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{
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.name = "single-bit-error-in-data-correct",
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.name = "single-bit-error-in-data-correct",
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.prepare = single_bit_error_in_data,
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.prepare = single_bit_error_in_data,
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