linux-kernel - Re: [PATCH 11/12] of: mtd: drop support for NAND_ECC_SOFT_BCH as "soft

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Date:	Sat, 16 Apr 2016 10:00:43 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Rafał Miłecki <zajec5@...il.com>
Cc:	linux-mtd@...ts.infradead.org, Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE), linux-kernel@...r.kernel.org (open list)
Subject: Re: [PATCH 11/12] of: mtd: drop support for NAND_ECC_SOFT_BCH as
 "soft_bch" mapping

On Fri, 15 Apr 2016 21:54:11 +0200
Rafał Miłecki <zajec5@...il.com> wrote:

> There isn't any difference between handling NAND_ECC_SOFT and
> NAND_ECC_SOFT_BCH now. What matters is the new field called "algo".
> Please note we're keeping backward DT compatibility. We are still
> treating "soft_bch" value as the one setting Hamming algorithm, it's
> just handled in of_get_nand_ecc_algo now.
> 
> Signed-off-by: Rafał Miłecki <zajec5@...il.com>
> ---
>  drivers/of/of_mtd.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c

This series is getting rid of of_mtd{.c,.h}, so I'll move those changes
directly into nand_base.c when applying.

> index 15d056e..a70a38c 100644
> --- a/drivers/of/of_mtd.c
> +++ b/drivers/of/of_mtd.c
> @@ -22,7 +22,6 @@ static const char *nand_ecc_modes[] = {
>  	[NAND_ECC_HW]		= "hw",
>  	[NAND_ECC_HW_SYNDROME]	= "hw_syndrome",
>  	[NAND_ECC_HW_OOB_FIRST]	= "hw_oob_first",
> -	[NAND_ECC_SOFT_BCH]	= "soft_bch",
>  };
>  
>  /**
> @@ -45,6 +44,14 @@ int of_get_nand_ecc_mode(struct device_node *np)
>  		if (!strcasecmp(pm, nand_ecc_modes[i]))
>  			return i;
>  
> +	/*
> +	 * For backward compatibility we support few obsoleted values that don't
> +	 * have their mappings into nand_ecc_modes_t anymore (they were merged
> +	 * with other enums).
> +	 */
> +	if (!strcasecmp(pm, "soft_bch"))
> +		return NAND_ECC_SOFT;
> +
>  	return -ENODEV;
>  }
>  EXPORT_SYMBOL_GPL(of_get_nand_ecc_mode);



-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com