linux-kernel - Re: [PATCH 3/3] mtd: brcmnand: respect ECC algorithm set by NAND subsystem

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Message-ID: <20160425170510.26a3eb63@bbrezillon>
Date:	Mon, 25 Apr 2016 17:05:10 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Rafał Miłecki <zajec5@...il.com>,
	Brian Norris <computersforpeace@...il.com>,
	Kamal Dasu <kdasu.kdev@...il.com>
Cc:	linux-mtd@...ts.infradead.org, Richard Weinberger <richard@....at>,
	David Woodhouse <dwmw2@...radead.org>,
	bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM STB NAND
	FLASH DRIVER), linux-kernel@...r.kernel.org (open list)
Subject: Re: [PATCH 3/3] mtd: brcmnand: respect ECC algorithm set by NAND
 subsystem

On Fri, 22 Apr 2016 13:23:15 +0200
Rafał Miłecki <zajec5@...il.com> wrote:

> It's more reliable than guessing based on ECC strength. It allows using
> NAND on devices with BCH-1 (e.g. D-Link DIR-885L).

Brian, Kamal, could you add your Ack on this patch.

> 
> Signed-off-by: Rafał Miłecki <zajec5@...il.com>
> ---
>  drivers/mtd/nand/brcmnand/brcmnand.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
> index c3331ff..dcb22dc 100644
> --- a/drivers/mtd/nand/brcmnand/brcmnand.c
> +++ b/drivers/mtd/nand/brcmnand/brcmnand.c
> @@ -1927,7 +1927,7 @@ static int brcmnand_setup_dev(struct brcmnand_host *host)
>  
>  	switch (chip->ecc.size) {
>  	case 512:
> -		if (chip->ecc.strength == 1) /* Hamming */
> +		if (chip->ecc.algo == NAND_ECC_HAMMING)
>  			cfg->ecc_level = 15;
>  		else
>  			cfg->ecc_level = chip->ecc.strength;



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