Re: [PATCH 3/3] thermal: rcar_gen3_thermal: Fix datatype for loop counter

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Hi Niklas,

On Wed, Jul 7, 2021 at 8:56 PM Niklas Söderlund
<niklas.soderlund+renesas@xxxxxxxxxxxx> wrote:
> On 2021-07-07 16:42:10 +0200, Geert Uytterhoeven wrote:
> > On Wed, Jul 7, 2021 at 3:14 PM Niklas Söderlund
> > <niklas.soderlund+renesas@xxxxxxxxxxxx> wrote:
> > > The loop counter 'i' should be unsigned int to match struct
> > > rcar_gen3_thermal_priv num_tscs where it's stored.
> >
> > It is also stored in rcar_gen3_thermal_tsc.id, which is still (signed) int.
>
> Thanks.
>
> >
> > > --- a/drivers/thermal/rcar_gen3_thermal.c
> > > +++ b/drivers/thermal/rcar_gen3_thermal.c
> > > @@ -423,7 +423,8 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
> > >         struct device *dev = &pdev->dev;
> > >         struct resource *res;
> > >         struct thermal_zone_device *zone;
> > > -       int ret, i;
> > > +       unsigned int i;
> > > +       int ret;
> > >
> > >         /* default values if FUSEs are missing */
> > >         /* TODO: Read values from hardware on supported platforms */
> >
> > And perhaps:
> >
> > -                dev_info(dev, "TSC%d: Loaded %d trip points\n", i, ret);
> > +                dev_info(dev, "TSC%u: Loaded %d trip points\n", i, ret);
> >
> > ?
>
> Good catch, why do my compiler not warn for this? Did you catch this by

Because the types are (somewhat) compatible.

> review or have you some compiler magic I'm missing?

Review. You changed the type of a variable, I checked all places where
the variable is used.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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