Re: cpufreq problem wrt suspend/resume on Athlon64

[Pavel Machek <pavel@suse.cz>]

Hi!

> I have noticed that the condition (cur_freq != cpu_policy->cur), which is
> unlikely() according to cpufreq.c:cpufreq_resume(), occurs on every resume
> on my box (Athlon64-based Asus).  Every time the box resumes, I get a message
> like that:
> 
> Warning: CPU frequency out of sync: cpufreq and timing core thinks of 1600000, is 1800000 kHz.
> 
> (the numbers vary: there may be 800000 vs 1600000 or even 800000 vs 1800000).
> 
> Also, when the box is suspended on AC power and resumed on batteries, it often
> reboots.
> 
> Please let me know if there's anything (relatively simple :-)) that I can do
> about it.

Introduce _suspend() routine to cpufreq, and force cpu to 800MHz
during suspend(). Put it back to right frequency during resume().

								Pavel
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