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mtd: mtd_nandecctest: add no corruption test

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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>
This commit is contained in:
Akinobu Mita 2012-09-08 01:48:08 +09:00 committed by David Woodhouse
parent 6060fb42a0
commit ccaa67956c
1 changed files with 26 additions and 0 deletions
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26
drivers/mtd/tests/mtd_nandecctest.c
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@ -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,