From: Paul Cercueil <paul@crapouillou.net>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Harvey Hunt <harveyhuntnexus@gmail.com>,
list@opendingux.net, linux-mtd@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
Paul Cercueil <paul@crapouillou.net>,
stable@vger.kernel.org
Subject: [PATCH v2 1/5] mtd: rawnand/davinci: Don't calculate ECC when reading page
Date: Sat, 16 Oct 2021 14:22:24 +0100 [thread overview]
Message-ID: <20211016132228.40254-1-paul@crapouillou.net> (raw)
The function nand_davinci_read_page_hwecc_oob_first() does read the ECC
data from the OOB area. Therefore it does not need to calculate the ECC
as it is already available.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb82c ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
drivers/mtd/nand/raw/davinci_nand.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c
index 118da9944e3b..89de24d3bb7a 100644
--- a/drivers/mtd/nand/raw/davinci_nand.c
+++ b/drivers/mtd/nand/raw/davinci_nand.c
@@ -394,7 +394,6 @@ static int nand_davinci_read_page_hwecc_oob_first(struct nand_chip *chip,
int eccsteps = chip->ecc.steps;
uint8_t *p = buf;
uint8_t *ecc_code = chip->ecc.code_buf;
- uint8_t *ecc_calc = chip->ecc.calc_buf;
unsigned int max_bitflips = 0;
/* Read the OOB area first */
@@ -420,8 +419,6 @@ static int nand_davinci_read_page_hwecc_oob_first(struct nand_chip *chip,
if (ret)
return ret;
- chip->ecc.calculate(chip, p, &ecc_calc[i]);
-
stat = chip->ecc.correct(chip, p, &ecc_code[i], NULL);
if (stat == -EBADMSG &&
(chip->ecc.options & NAND_ECC_GENERIC_ERASED_CHECK)) {
--
2.33.0
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next reply other threads:[~2021-10-16 13:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-16 13:22 Paul Cercueil [this message]
2021-10-16 13:22 ` [PATCH v2 2/5] mtd: rawnand/davinci: Avoid duplicated page read Paul Cercueil
2021-11-19 18:44 ` Miquel Raynal
2021-10-16 13:22 ` [PATCH v2 3/5] mtd: rawnand/davinci: Rewrite function description Paul Cercueil
2021-11-19 18:44 ` Miquel Raynal
2021-10-16 13:22 ` [PATCH v2 4/5] mtd: rawnand: Export nand_read_page_hwecc_oob_first() Paul Cercueil
2021-11-19 18:43 ` Miquel Raynal
2021-10-16 13:22 ` [PATCH v2 5/5] mtd: rawnand/ingenic: JZ4740 needs 'oob_first' read page function Paul Cercueil
2021-11-19 18:43 ` Miquel Raynal
2021-11-19 18:44 ` [PATCH v2 1/5] mtd: rawnand/davinci: Don't calculate ECC when reading page Miquel Raynal
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