linux-kernel - Re: [PATCH 2/2] i2c: i2c-stm32f7: allows for any bus frequency

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Date:   Thu, 26 Mar 2020 13:38:38 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Pierre Yves MORDRET <pierre-yves.mordret@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Fabrice GASNIER <fabrice.gasnier@...com>
Subject: Re: [PATCH 2/2] i2c: i2c-stm32f7: allows for any bus frequency

On Thu, Mar 26, 2020 at 12:12 PM Alain Volmat <alain.volmat@...com> wrote:
> On Wed, Mar 25, 2020 at 06:53:45PM +0000, Andy Shevchenko wrote:
> > On Wed, Mar 25, 2020 at 8:38 PM Alain Volmat <alain.volmat@...com> wrote:

...

> > > +       int i;
> > > +
> > > +       for (i = ARRAY_SIZE(i2c_specs) - 1; i >= 0; i--)
> >
> >
> > Perhaps
> >
> >        int i = ARRAY_SIZE(i2c_specs);
> >
> >        while(i--)
> >
> > ?
>
> I propose the following code to make it a bit easier to read/understand:
>
> static u32 get_lower_rate(u32 rate)
> {
>         int i = ARRAY_SIZE(i2c_specs);
>
>         while (i--)
>                 if (i2c_specs[i].rate < rate)
>                         break;
>
>         return i2c_specs[i].rate;
> }
>
> If you agree with that I'll push a v2.

No objections.

-- 
With Best Regards,
Andy Shevchenko