linux-kernel - Re: [PATCH v3 1/5] PM / OPP: Introduce a power estimation helper

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Message-ID: <20190201124412.GF10042@e107155-lin>
Date:   Fri, 1 Feb 2019 12:44:12 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     Quentin Perret <quentin.perret@....com>
Cc:     viresh.kumar@...aro.org, rjw@...ysocki.net, nm@...com,
        sboyd@...nel.org, mka@...omium.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        dietmar.eggemann@....com
Subject: Re: [PATCH v3 1/5] PM / OPP: Introduce a power estimation helper

On Fri, Feb 01, 2019 at 12:27:45PM +0000, Sudeep Holla wrote:
> On Fri, Feb 01, 2019 at 12:09:53PM +0000, Quentin Perret wrote:
> > Hi Sudeep,
> >
> > On Friday 01 Feb 2019 at 12:04:53 (+0000), Sudeep Holla wrote:
> > > On Fri, Feb 01, 2019 at 09:30:57AM +0000, Quentin Perret wrote:
> > > > +void dev_pm_opp_of_register_em(struct cpumask *cpus, int nr_opp)
> > > > +{
> > > > +	struct em_data_callback em_cb = EM_DATA_CB(_get_cpu_power);
> > > > +	int ret, cpu = cpumask_first(cpus);
> > > > +	struct device *cpu_dev;
> > > > +	struct device_node *np;
> > > > +	u32 cap;
> > > > +
> > > > +	cpu_dev = get_cpu_device(cpu);
> > > > +	if (!cpu_dev)
> > > > +		return;
> > > > +
> > > > +	np = of_node_get(cpu_dev->of_node);
> > > > +	if (!np)
> > > > +		return;
> > > > +
>
> Forgot earlier, you can use of_cpu_device_node_get to combine the above 2.
>

Scratch it, you need cpu_dev anyways. So ignore that.

--
Regards,
Sudeep