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SubjectRe: [PATCH v4 6/7] mtd: rawnand: ESMT: Also use the last page for bad block markers
Hi Frieder,

Schrempf Frieder <frieder.schrempf@kontron.de> wrote on Mon, 18 Feb
2019 10:42:45 +0000:

> From: Frieder Schrempf <frieder.schrempf@kontron.de>
>
> It is known that some ESMT SLC NANDs have been shipped
> with the factory bad block markers in the first or last page
> of the block, instead of the first or second page. To be on
> the safe side, let's check all three locations.
>
> Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
> ---
> drivers/mtd/nand/raw/nand_esmt.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c
> index 99a8092969a7..b37e0b5af5ae 100644
> --- a/drivers/mtd/nand/raw/nand_esmt.c
> +++ b/drivers/mtd/nand/raw/nand_esmt.c
> @@ -36,7 +36,14 @@ static void esmt_nand_decode_id(struct nand_chip *chip)
> static int esmt_nand_init(struct nand_chip *chip)
> {
> if (nand_is_slc(chip))
> - chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
> + /*
> + * It is known that some ESMT SLC NANDs have been shipped
> + * with the factory bad block markers in the first or last page
> + * of the block, instead of the first or second page. To be on
> + * the safe side, let's check all three locations.
> + */
> + chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
> + NAND_BBM_LASTPAGE;
>
> return 0;
> }


Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>


Thanks,
Miquèl

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