[PATCH v2 3/3] mtd: nand: omap2: Support for hardware BCH error correction

Artem Bityutskiy artem.bityutskiy at linux.intel.com
Fri Nov 30 23:28:00 EST 2012


On Wed, 2012-10-31 at 12:38 +0530, Philip, Avinash wrote:
> +static int erased_sector_bitflips(u_char *data, u_char *oob,
> +               struct omap_nand_info *info)
> +{
> +       int flip_bits = 0, i;
> +
> +       for (i = 0; i < info->nand.ecc.size; i++) {
> +               flip_bits += hweight8(~data[i]);
> +               if (flip_bits > info->nand.ecc.strength)
> +                       return 0;
> +       }
> +
> +       for (i = 0; i < info->nand.ecc.bytes - 1; i++) {
> +               flip_bits += hweight8(~oob[i]);
> +               if (flip_bits > info->nand.ecc.strength)
> +                       return 0;
> +       }

Why do you need the second for loop?

-- 
Best Regards,
Artem Bityutskiy
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