[Bug 77201] CPU online hangs, works when powernow-k8 is UN-loaded

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https://bugzilla.kernel.org/show_bug.cgi?id=77201

--- Comment #42 from Viresh Kumar <viresh.kumar@linaro.org> ---
(In reply to registosites from comment #40)
> That was the last output before the machine became unresponsive.

Hmm, so it looks like something happened while changing
frequency and core is doing things correctly otherwise.

> I didn't manage to compile this one, it fails with:
> 
>   CC      drivers/cpuidle/sysfs.o
>   CC      lib/dynamic_debug.o
>   CC [M]  drivers/cpufreq/acpi-cpufreq.o
>   CC      drivers/cpuidle/governors/ladder.o
> drivers/cpufreq/acpi-cpufreq.c: In function ‘store_boost’:
> drivers/cpufreq/acpi-cpufreq.c:160:26: error: ‘struct cpufreq_driver’ has no

I intentionally didn't revert unrelated drivers completely and so this. But
can't you just disable acpi-cpufreq driver and test? I thought yes, and so did
this. Otherwise I would update my branch for you.

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