On 03/05, Andrew Morton wrote:
>
> Basically the same as
> http://ozlabs.org/~akpm/mmots/broken-out/drivers-platform-x86-thinkpad_acpic-move-hotkey_thread_mutex-lock-after-set_freezable.patch.
>  I think Artem's patch is a little better.  There doesn't appear to be
> any locking protocol for tpacpi_lifecycle.

Which seems to have the same problem, hotkey_kthread() still calls
kthread_freezable_should_stop() under hotkey_thread_mutex.

IOW, we have two try_to_freeze's here, the patch moves only one of
them outside of the hotkey_thread_mutex.

Oleg.

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