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Commit ccaa6795 authored by Akinobu Mita's avatar Akinobu Mita Committed by David Woodhouse
Browse files

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: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 6060fb42

drivers/mtd/tests/mtd_nandecctest.c

+26 −0
Original line number Diff line number Diff line
@@ -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,