linux-kernel - Re: [PATCH v3 1/1] i2c: taos-evm: replace simple

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Message-ID: <CAHp75Vepu9=DjsV2JdR2pRMQw+0GJTJktudg44GnCgbms0B7mw@mail.gmail.com>
Date:	Wed, 18 Nov 2015 18:26:25 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	LABBE Corentin <clabbe.montjoie@...il.com>
Cc:	jdelvare@...e.com, Wolfram Sang <wsa@...-dreams.de>,
	linux-i2c@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/1] i2c: taos-evm: replace simple_strtoul by kstrtou8

On Wed, Nov 18, 2015 at 2:55 PM, LABBE Corentin
<clabbe.montjoie@...il.com> wrote:
> The simple_strtoul function is marked as obsolete.
> This patch replace it by kstrtou8.
>

Only one concern. simple_strto* goes through the string until it has
an invalid character or \0. In your case kstrtou8 will fail the
transfer. So, is there possible cases when HW returns such data?

And just a style nitpicks below.

>                 if (p[0] == 'x') {
> -                       data->byte = simple_strtol(p + 1, NULL, 16);
> +                       /*
> +                        * voluntarily dropping error code of kstrtou8 since all

-> Voluntarily…

> +                        * error code that it could return are invalid according
> +                        * to Documentation/i2c/fault-codes

-> …codes.

> +                        */
> +                       if (kstrtou8(p + 1, 16, &data->byte))
> +                               return -EPROTO;

-- 
With Best Regards,
Andy Shevchenko
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