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authorAkinobu Mita <akinobu.mita@gmail.com>2012-09-08 01:48:08 +0900
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-09-29 15:47:45 +0100
commitccaa67956cfef80776d72d134467235f0055c863 (patch)
tree37093c6dea3eb216018482314f4120d0599d6217 /drivers/mtd
parent6060fb42a0bf93015d05c1a857b94894936f40ee (diff)
downloadlinux-ccaa67956cfef80776d72d134467235f0055c863.tar.bz2
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>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/tests/mtd_nandecctest.c26
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,