This is a note to let you know that I've just added the patch titled
mtd: rawnand: meson: fix OOB available bytes for ECC
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mtd-rawnand-meson-fix-oob-available-bytes-for-ecc.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7e6b04f9238eab0f684fafd158c1f32ea65b9eaa Mon Sep 17 00:00:00 2001
From: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
Date: Wed, 5 Jul 2023 09:52:10 +0300
Subject: mtd: rawnand: meson: fix OOB available bytes for ECC
From: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
commit 7e6b04f9238eab0f684fafd158c1f32ea65b9eaa upstream.
It is incorrect to calculate number of OOB bytes for ECC engine using
some "already known" ECC step size (1024 bytes here). Number of such
bytes for ECC engine must be whole OOB except 2 bytes for bad block
marker, while proper ECC step size and strength will be selected by
ECC logic.
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20230705065211.293500-1-AVKrasnov@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/raw/meson_nand.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1180,7 +1180,6 @@ static int meson_nand_attach_chip(struct
struct meson_nfc *nfc = nand_get_controller_data(nand);
struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand);
struct mtd_info *mtd = nand_to_mtd(nand);
- int nsectors = mtd->writesize / 1024;
int ret;
if (!mtd->name) {
@@ -1198,7 +1197,7 @@ static int meson_nand_attach_chip(struct
nand->options |= NAND_NO_SUBPAGE_WRITE;
ret = nand_ecc_choose_conf(nand, nfc->data->ecc_caps,
- mtd->oobsize - 2 * nsectors);
+ mtd->oobsize - 2);
if (ret) {
dev_err(nfc->dev, "failed to ECC init\n");
return -EINVAL;
Patches currently in stable-queue which might be from AVKrasnov@xxxxxxxxxxxxxx are
queue-5.10/mtd-rawnand-meson-fix-oob-available-bytes-for-ecc.patch
