linux-kernel - Re: [PATCH] mtd: rawnand: marvell: fix layouts

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Date: Tue, 2 Jan 2024 11:38:06 +0100
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Elad Nachman <enachman@...vell.com>
Cc: <richard@....at>, <vigneshr@...com>, <vadym.kochan@...ision.eu>,
 <aviramd@...vell.com>, <linux-mtd@...ts.infradead.org>,
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: rawnand: marvell: fix layouts

Hi Elad,

enachman@...vell.com wrote on Sun, 31 Dec 2023 19:49:50 +0200:

> From: Elad Nachman <enachman@...vell.com>
> 

Please fix your mailer because this paragraph is way too small (<50
chars!).

> Check in nand_base.c, nand_scan_tail() :
> if (ecc->steps * ecc->size != mtd->writesize)
> Fails for some NAND chips.
> Remove entries which cannot create integral
> multiplications, and adjust the number of chunks
> for entries which fails the above calculation to
> calculate correctly (this was previously done
> automatically before the check).

I'm okay with that.

> Also fix spacing of the said table.

No, please don't do this in the same commit, it becomes totally
unreadable.

Please keep the spacing as it is, or if you want to change the spacing,
keep additional spaces so that it is easily readable by keeping clear
columns.

> 
> Fixes: 68c18dae6888 ("mtd: rawnand: marvell: add missing layouts")

Please add:

Cc: stable@...r.kernel.org

> Signed-off-by: Elad Nachman <enachman@...vell.com>
> ---
>  drivers/mtd/nand/raw/marvell_nand.c | 27 ++++++++++++---------------
>  1 file changed, 12 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c
> index a46698744850..21f4469b5cda 100644
> --- a/drivers/mtd/nand/raw/marvell_nand.c
> +++ b/drivers/mtd/nand/raw/marvell_nand.c
> @@ -285,21 +285,18 @@ struct marvell_hw_ecc_layout {
>  
>  /* Layouts explained in AN-379_Marvell_SoC_NFC_ECC */
>  static const struct marvell_hw_ecc_layout marvell_nfc_layouts[] = {
> -	MARVELL_LAYOUT(  512,   512,  1,  1,  1,  512,  8,  8,  0,  0,  0),
> -	MARVELL_LAYOUT( 2048,   512,  1,  1,  1, 2048, 40, 24,  0,  0,  0),
> -	MARVELL_LAYOUT( 2048,   512,  4,  1,  1, 2048, 32, 30,  0,  0,  0),
> -	MARVELL_LAYOUT( 2048,   512,  8,  2,  1, 1024,  0, 30,1024,32, 30),
> -	MARVELL_LAYOUT( 2048,   512,  8,  2,  1, 1024,  0, 30,1024,64, 30),
> -	MARVELL_LAYOUT( 2048,   512,  12, 3,  2, 704,   0, 30,640,  0, 30),
> -	MARVELL_LAYOUT( 2048,   512,  16, 5,  4, 512,   0, 30,  0, 32, 30),
> -	MARVELL_LAYOUT( 4096,   512,  4,  2,  2, 2048, 32, 30,  0,  0,  0),
> -	MARVELL_LAYOUT( 4096,   512,  8,  5,  4, 1024,  0, 30,  0, 64, 30),
> -	MARVELL_LAYOUT( 4096,   512,  12, 6,  5, 704,   0, 30,576, 32, 30),
> -	MARVELL_LAYOUT( 4096,   512,  16, 9,  8, 512,   0, 30,  0, 32, 30),
> -	MARVELL_LAYOUT( 8192,   512,  4,  4,  4, 2048,  0, 30,  0,  0,  0),
> -	MARVELL_LAYOUT( 8192,   512,  8,  9,  8, 1024,  0, 30,  0, 160, 30),
> -	MARVELL_LAYOUT( 8192,   512,  12, 12, 11, 704,  0, 30,448,  64, 30),
> -	MARVELL_LAYOUT( 8192,   512,  16, 17, 16, 512,  0, 30,  0,  32, 30),
> +	MARVELL_LAYOUT(512,   512,  1,  1,  1,  512,  8,  8,  0,  0,  0),
> +	MARVELL_LAYOUT(2048,   512,  1,  1,  1, 2048, 40, 24,  0,  0,  0),
> +	MARVELL_LAYOUT(2048,   512,  4,  1,  1, 2048, 32, 30,  0,  0,  0),
> +	MARVELL_LAYOUT(2048,   512,  8,  2,  1, 1024,  0, 30, 1024, 32, 30),
> +	MARVELL_LAYOUT(2048,   512,  8,  2,  1, 1024,  0, 30, 1024, 64, 30),
> +	MARVELL_LAYOUT(2048,   512,  16, 4,  4, 512,   0, 30,  0, 32, 30),
> +	MARVELL_LAYOUT(4096,   512,  4,  2,  2, 2048, 32, 30,  0,  0,  0),
> +	MARVELL_LAYOUT(4096,   512,  8,  4,  4, 1024,  0, 30,  0, 64, 30),
> +	MARVELL_LAYOUT(4096,   512,  16, 8,  8, 512,   0, 30,  0, 32, 30),
> +	MARVELL_LAYOUT(8192,   512,  4,  4,  4, 2048,  0, 30,  0,  0,  0),
> +	MARVELL_LAYOUT(8192,   512,  8,  8,  8, 1024,  0, 30,  0, 160, 30),
> +	MARVELL_LAYOUT(8192,   512,  16, 16, 16, 512,  0, 30,  0,  32, 30),
>  };
>  
>  /**


Thanks,
Miquèl