linux-kernel - Re: [PATCH 31/36] ARM: s3c: cpufreq: use global s3c2412_cpufreq

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Date:   Wed, 23 Oct 2019 15:57:51 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     "moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES" 
        <linux-samsung-soc@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 31/36] ARM: s3c: cpufreq: use global s3c2412_cpufreq_setrefresh

On Wed, Oct 23, 2019 at 3:44 PM Krzysztof Kozlowski <krzk@...nel.org> wrote:
> On Thu, Oct 10, 2019 at 10:30:15PM +0200, Arnd Bergmann wrote:

> > @@ -246,6 +246,7 @@ extern int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg,
> >
> >  extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg,
> >                                struct s3c_iotimings *iot);
> > +extern void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg);
>
> I think that it does not cover the !CONFIG_S3C2412_IOTIMING case.
> Either you need to provide also the empty stub or add default=y to
> S3C2412_IOTIMING. Otherwise cpufreq driver might end up without this.

S3C2412_IOTIMING is not currently optional, it always gets selected
by ARM_S3C2412_CPUFREQ, unlike S3C2410_IOTIMING which is
only selected by specific boards for reasons I don't understand.

        Arnd