[PATCH] mtd: nand: samsung: warn about un-parseable ECC info

[Boris Brezillon]

On Mon,  1 May 2017 17:04:55 -0700
Brian Norris <computersforpeace at gmail.com> wrote:

> We don't handle cases larger than 7. We probably shouldn't pretend we
> know the ECC step size in this case, and it's probably also good to
> WARN() like we do in many other similar cases.
> 
> Cc: Hans de Goede <hdegoede at redhat.com>
> Fixes: 8fc82d456e40 ("mtd: nand: samsung: Retrieve ECC requirements from extended ID")
> Signed-off-by: Brian Norris <computersforpeace at gmail.com>

Acked-by: Boris Brezillon <boris.brezillon at free-electrons.com>

> ---
> Compile tested only
> 
>  drivers/mtd/nand/nand_samsung.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/nand/nand_samsung.c b/drivers/mtd/nand/nand_samsung.c
> index 9cfc4035a420..1e0755997762 100644
> --- a/drivers/mtd/nand/nand_samsung.c
> +++ b/drivers/mtd/nand/nand_samsung.c
> @@ -84,6 +84,9 @@ static void samsung_nand_decode_id(struct nand_chip *chip)
>  			case 7:
>  				chip->ecc_strength_ds = 60;
>  				break;
> +			default:
> +				WARN(1, "Could not decode ECC info");
> +				chip->ecc_step_ds = 0;
>  			}
>  		}
>  	} else {