From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pb0-f49.google.com ([209.85.160.49]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TA1jJ-0007oZ-Rr for linux-mtd@lists.infradead.org; Fri, 07 Sep 2012 16:48:35 +0000 Received: by pbbrq8 with SMTP id rq8so4385088pbb.36 for ; Fri, 07 Sep 2012 09:48:28 -0700 (PDT) From: Akinobu Mita To: linux-mtd@lists.infradead.org Subject: [PATCH -next v4 3/5] mtd: mtd_nandecctest: add no corruption test Date: Sat, 8 Sep 2012 01:48:08 +0900 Message-Id: <1347036490-18258-4-git-send-email-akinobu.mita@gmail.com> In-Reply-To: <1347036490-18258-1-git-send-email-akinobu.mita@gmail.com> References: <1347036490-18258-1-git-send-email-akinobu.mita@gmail.com> Cc: Artem Bityutskiy , David Woodhouse , Akinobu Mita List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Cc: David Woodhouse Cc: linux-mtd@lists.infradead.org Cc: Artem Bityutskiy --- * v4 - fix swapped two ecc arguments for __nand_correct_data() drivers/mtd/tests/mtd_nandecctest.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c index 204f796ed..ff97b10 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, -- 1.7.11.4