Re: [PATCH] regmap: Fix the size calculation formap->format.buf_size

[Joe Perches]

On Thu, 2012-05-31 at 21:10 -0300, Fabio Estevam wrote:
> the total size should be calculated by summing up the number of bits of
> each element and using a DIV_ROUND_UP to return the number of bytes.
[]
> diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
[]
> @@ -246,11 +246,11 @@ struct regmap *regmap_init(struct device *dev,
>  		map->lock = regmap_lock_mutex;
>  		map->unlock = regmap_unlock_mutex;
>  	}
> -	map->format.buf_size = (config->reg_bits + config->val_bits) / 8;
>  	map->format.reg_bytes = DIV_ROUND_UP(config->reg_bits, 8);
>  	map->format.pad_bytes = config->pad_bits / 8;
>  	map->format.val_bytes = DIV_ROUND_UP(config->val_bits, 8);
> -	map->format.buf_size += map->format.pad_bytes;
> +	map->format.buf_size = DIV_ROUND_UP(config->reg_bits +
> +			config->val_bits + config->pad_bits, 8);
>  	map->reg_shift = config->pad_bits % 8;

s/8/BITS_PER_BYTE/ ?


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/