Re: [PATCH v2 1/4] cpufreq: pxa: use generic platdev driver for device-tree

From: Viresh Kumar
Date: Wed Oct 19 2016 - 23:34:46 EST


On 19-10-16, 22:06, Robert Jarzmik wrote:
> Viresh Kumar <viresh.kumar@xxxxxxxxxx> writes:
>
> >> >> + { .compatible = "marvell,pxa250", },
> >> >> + { .compatible = "marvell,pxa270", },
> >> >>
> >> >> { .compatible = "samsung,exynos3250", },
> >> >> { .compatible = "samsung,exynos4210", },
> >> >
> >> > Isn't there a race between cpufreq-dt and the platform driver to
> >> > register first ?
> >> Ah, could you be more specific about the race you're talking of ?
> >>
> >> My understanding was that cpufreq-dt-platdev does create the device, and
> >> cpufreq-dt is a driver for it, so there is no race but a direct relationship
> >> AFAIU.
> >
> > I mean that both the driver may try to register to the cpufreq core if
> > they are both compiled in a single image.
> Euh I still don't follow you. The only driver that can register to the cpufreq
> core is cpufreq-dt.

I was wondering on what will happen if both cpufreq-dt and your pxa2xx-cpufreq
driver are present in the same kernel image. In that case the init routines of
both of them will try to call cpufreq_register_driver().

--
viresh