[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 #64 from Viresh Kumar <viresh.kumar@linaro.org> ---
(In reply to Viresh Kumar from comment #63)
> Let me try some more hacks :)

Okay, I can understand that its taking more time than it should have but its
probably more tricky that we actually thought..

Don't loose hope, we can still crack this :)

I have added one more commit now. Idea is to stop ongoing frequency transition
at any point of time we want.

By default everything will work as it was working. So, continue upto the last
step, where you crashed, 1.8G ..

Before changing last freq do this:

echo 1 > /sys/kernel/debug/stop_transition


Follow this in code:

+       /* HACK THIS */
+       if (stop_transition)
+               return 0;

So, we will return from whichever part of powernowk8_target_fn() we  want.
I have placed it at some point now, you can drag it in whichever direction you
want.

If it works, then drag it later into the code.

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