Re: [PATCH V2 3/7] driver/core: cpu: initialize opp table

[Sudeep Holla]

On 21/05/14 15:01, Viresh Kumar wrote:
> On 21 May 2014 19:15, Sudeep Holla <sudeep.holla@xxxxxxx> wrote:
> > [Nit] Not sure if we need this logging on each cpu, may be dev_dbg if you
> > still
> > fancy one ? :)
>
> It wouldn't happen on each CPU, but one CPU per policy as others
> would return -ENODEV.

Hmm agreed, but there are SoCs that support per CPU DVFS ;)

> I added dev_dbg earlier but then I thought dev_info is better as we may
> better show this to everybody as it about the most important device,
> i.e. CPU :)
>
> > > +       /* Print error only if there is an issue with OPP table */
> > > +       else if (error != -ENOSYS && error != -ENODEV)
> > > +               dev_err(&cpu->dev, "%s: failed to init OPP table for
> > > cpu%d, err: %d\n",
> > > +                       __func__, cpu->dev.id, error);
> > > +}
> > > +#else
> > > +static inline void of_init_cpu_opp_table(struct cpu *cpu) {}
> > > +#endif
> > > +
> >
> >
> > IMO this could be more generic and applicable for any device if you replace
> > "struct cpu" with "struct device". I know this is currently used by cpu but
> > we can extend it's use for any device if needed in future. You can then move
> > this to pm_opp.h as of_init_dev_opp_table may be.
>
> Probably we will call of_init_opp_table() directly for other devices, as this
> function doesn't do anything else, apart from some prints.. So, probably
> leave is as is for now, unless a real need arises ?

I don't see anything cpu specific there, but that's just my opinion.

Regards,
Sudeep

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