linux-kernel - Re: [PATCH] rtc: rtc-pcf2123: replace strict

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Message-id: <000101ce6028$c01fa220$405ee660$@samsung.com>
Date:	Mon, 03 Jun 2013 16:05:37 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Andy Shevchenko' <andy.shevchenko@...il.com>
Cc:	'Andrew Morton' <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	'Alessandro Zummo' <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, Jingoo Han <jg1.han@...sung.com>
Subject: Re: [PATCH] rtc: rtc-pcf2123: replace strict_strtoul() with kstrtoul()

On Sunday, June 02, 2013 8:56 PM, Andy Shevchenko wrote:
> On Sat, Jun 1, 2013 at 10:31 AM, Jingoo Han <jg1.han@...sung.com> wrote:
> > The usage of strict_strtoul() is not preferred, because
> > strict_strtoul() is obsolete. Thus, kstrtoul() should be
> > used.
> 
> > --- a/drivers/rtc/rtc-pcf2123.c
> > +++ b/drivers/rtc/rtc-pcf2123.c
> > @@ -94,7 +94,7 @@ static ssize_t pcf2123_show(struct device *dev, struct device_attribute *attr,
> >
> >         r = container_of(attr, struct pcf2123_sysfs_reg, attr);
> >
> > -       if (strict_strtoul(r->name, 16, &reg))
> > +       if (kstrtoul(r->name, 16, &reg))
> >                 return -EINVAL;
> 
> ret = kstrtoul(...);
> if (ret)
> return ret;
> 
> > @@ -117,8 +117,7 @@ static ssize_t pcf2123_store(struct device *dev, struct device_attribute *attr,
> >
> >         r = container_of(attr, struct pcf2123_sysfs_reg, attr);
> >
> > -       if (strict_strtoul(r->name, 16, &reg)
> > -               || strict_strtoul(buffer, 10, &val))
> > +       if (kstrtoul(r->name, 16, &reg) || kstrtoul(buffer, 10, &val))
> >                 return -EINVAL;
> 
> I see no harm to allow user to write octal values as well.
> Thus, just
> ret = kstrtoul(r->name, 0, &reg);

If you want to do this, please send another patch later, on top of this patch.
I just want to address the replacing strict_strtoul() with kstrtoul().

Best regards,
Jingoo Han

> if (ret)
> return ret;
> 
> Alessandro, what do you think?
> 
> --
> With Best Regards,
> Andy Shevchenko

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