@@ -33,6 +33,27 @@ 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, calc_ecc, error_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)
{
@@ -56,6 +77,11 @@ 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,
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> Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> --- No changes from previous version drivers/mtd/tests/mtd_nandecctest.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)