This is a note to let you know that I've just added the patch titled
mtd: atmel_nand: Disable subpage NAND write when using Atmel PMECC
to the 3.14-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-atmel_nand-disable-subpage-nand-write-when-using-atmel-pmecc.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 90445ff6241e2a13445310803e2efa606c61f276 Mon Sep 17 00:00:00 2001
From: Herve Codina <Herve.CODINA@xxxxxxxxx>
Date: Mon, 3 Mar 2014 12:15:29 +0100
Subject: mtd: atmel_nand: Disable subpage NAND write when using Atmel PMECC
From: Herve Codina <Herve.CODINA@xxxxxxxxx>
commit 90445ff6241e2a13445310803e2efa606c61f276 upstream.
Crash detected on sam5d35 and its pmecc nand ecc controller.
The problem was a call to chip->ecc.hwctl from nand_write_subpage_hwecc
(nand_base.c) when we write a sub page.
chip->ecc.hwctl function is not set when we are using PMECC controller.
As a workaround, set NAND_NO_SUBPAGE_WRITE for PMECC controller in
order to disable sub page access in nand_write_page.
Signed-off-by: Herve Codina <Herve.CODINA@xxxxxxxxx>
Acked-by: Josh Wu <josh.wu@xxxxxxxxx>
Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/atmel_nand.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -1220,6 +1220,7 @@ static int atmel_pmecc_nand_init_params(
goto err;
}
+ nand_chip->options |= NAND_NO_SUBPAGE_WRITE;
nand_chip->ecc.read_page = atmel_nand_pmecc_read_page;
nand_chip->ecc.write_page = atmel_nand_pmecc_write_page;
Patches currently in stable-queue which might be from Herve.CODINA@xxxxxxxxx are
queue-3.14/mtd-atmel_nand-disable-subpage-nand-write-when-using-atmel-pmecc.patch
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