linux-kernel - Re: [PATCH] cpufreq: loongson2_cpufreq: don't declare local variable as static

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Message-ID: <CAKohpo=HfZMmSsHdNyZ5cGhOAyMHkHNH8bBrOwk7kC9eBK_VbQ@mail.gmail.com>
Date:	Thu, 3 Apr 2014 20:14:24 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Alexandre Oliva <oliva@....org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: loongson2_cpufreq: don't declare local variable
 as static

On 3 April 2014 18:10, Alexandre Oliva <oliva@....org> wrote:
> FWIW, the same mistake is present in at32.

I will check others as well now :)

> I've just finished bisecting the cpufreq regression on loongson2.
> Indeed, this s/static// patch does not fix it, but it was 652ed95d5fa,
> the patch that moved cpuclk into loongson2_cpufreq_cpu_init, that caused
> the regression.
>
> Reverting all the changes to loongson2_cpufreq.c in 652ed95d5fa makes
> cpufreq work again, as opposed to printing nan% in all cpufreq stats in
> cpufreq-info's output, and freezing shortly thereafter.

You must have a look at this:

https://lkml.org/lkml/2014/4/2/426 : [PATCH] MIPS/loongson2_cpufreq:
fix CPU clock rate setting
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