From: <gregkh@linuxfoundation.org>
To: miquel.raynal@free-electrons.com,
boris.brezillon@free-electrons.com, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "mtd: nand: sunxi: Fix ECC strength choice" has been added to the 4.14-stable tree
Date: Wed, 14 Feb 2018 15:25:41 +0100 [thread overview]
Message-ID: <151861834179226@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
mtd: nand: sunxi: Fix ECC strength choice
to the 4.14-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-nand-sunxi-fix-ecc-strength-choice.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From f4c6cd1a7f2275d5bc0e494b21fff26f8dde80f0 Mon Sep 17 00:00:00 2001
From: Miquel Raynal <miquel.raynal@free-electrons.com>
Date: Wed, 24 Jan 2018 23:49:31 +0100
Subject: mtd: nand: sunxi: Fix ECC strength choice
From: Miquel Raynal <miquel.raynal@free-electrons.com>
commit f4c6cd1a7f2275d5bc0e494b21fff26f8dde80f0 upstream.
When the requested ECC strength does not exactly match the strengths
supported by the ECC engine, the driver is selecting the closest
strength meeting the 'selected_strength > requested_strength'
constraint. Fix the fact that, in this particular case, ecc->strength
value was not updated to match the 'selected_strength'.
For instance, one can encounter this issue when no ECC requirement is
filled in the device tree while the NAND chip minimum requirement is not
a strength/step_size combo natively supported by the ECC engine.
Fixes: 1fef62c1423b ("mtd: nand: add sunxi NAND flash controller support")
Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mtd/nand/sunxi_nand.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/mtd/nand/sunxi_nand.c
+++ b/drivers/mtd/nand/sunxi_nand.c
@@ -1853,8 +1853,14 @@ static int sunxi_nand_hw_common_ecc_ctrl
/* Add ECC info retrieval from DT */
for (i = 0; i < ARRAY_SIZE(strengths); i++) {
- if (ecc->strength <= strengths[i])
+ if (ecc->strength <= strengths[i]) {
+ /*
+ * Update ecc->strength value with the actual strength
+ * that will be used by the ECC engine.
+ */
+ ecc->strength = strengths[i];
break;
+ }
}
if (i >= ARRAY_SIZE(strengths)) {
Patches currently in stable-queue which might be from miquel.raynal@free-electrons.com are
queue-4.14/mtd-nand-sunxi-fix-ecc-strength-choice.patch
queue-4.14/mtd-nand-fix-nand_do_read_oob-return-value.patch
reply other threads:[~2018-02-14 14:25 UTC|newest]
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