From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Abhishek Sahu <absahu@codeaurora.org>,
Marek Vasut <marek.vasut@gmail.com>,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, linux-mtd@lists.infradead.org,
Richard Weinberger <richard@nod.at>,
Brian Norris <computersforpeace@gmail.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH] mtd: rawnand: fix return value check for bad block status
Date: Fri, 22 Jun 2018 13:34:36 +0200 [thread overview]
Message-ID: <20180622133436.39e1466d@bbrezillon> (raw)
In-Reply-To: <20180618155757.6cbe0fae@xps13>
On Mon, 18 Jun 2018 15:57:57 +0200
Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> Hi Boris,
>
> On Wed, 13 Jun 2018 14:32:36 +0530, Abhishek Sahu
> <absahu@codeaurora.org> wrote:
>
> > Positive return value from read_oob() is making false BAD
> > blocks. For some of the NAND controllers, OOB bytes will be
> > protected with ECC and read_oob() will return number of bitflips.
> > If there is any bitflip in ECC protected OOB bytes for BAD block
> > status page, then that block is getting treated as BAD.
> >
> > Fixes: c120e75e0e7d ("mtd: nand: use read_oob() instead of cmdfunc() for bad block check")
> > Cc: <stable@vger.kernel.org>
> > Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
> > ---
> > drivers/mtd/nand/raw/nand_base.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
> > index f28c3a5..4a73f73 100644
> > --- a/drivers/mtd/nand/raw/nand_base.c
> > +++ b/drivers/mtd/nand/raw/nand_base.c
> > @@ -440,7 +440,7 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs)
> >
> > for (; page < page_end; page++) {
> > res = chip->ecc.read_oob(mtd, chip, page);
> > - if (res)
> > + if (res < 0)
> > return res;
> >
> > bad = chip->oob_poi[chip->badblockpos];
>
> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Applied.
Thanks,
Boris
>
> I suppose this patch is a good candidate to be part of a future
> mtd/fixes PR?
>
> Regards,
> Miquèl
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
prev parent reply other threads:[~2018-06-22 11:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-13 9:02 [PATCH] mtd: rawnand: fix return value check for bad block status Abhishek Sahu
2018-06-18 13:57 ` Miquel Raynal
2018-06-22 11:34 ` Boris Brezillon [this message]
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