Re: [2.6.33-rc5] Weird deadlock when shutting down

[AmÃrico Wang]

On Sun, Feb 21, 2010 at 6:17 PM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
> On Sun, 2010-02-21 at 17:51 +0800, AmÃrico Wang wrote:
>> On Sat, Feb 20, 2010 at 9:57 PM, Johannes Berg
>> <johannes@xxxxxxxxxxxxxxxx> wrote:
>> > On Sat, 2010-02-20 at 21:44 +0800, AmÃrico Wang wrote:
>> >
>> >> That message is displayed before shutting down the devices.
>> >>
>> >> To verify, you can add some printk() in the end of
>> >> __cpufreq_remove_dev(), or enable CONFIG_CPU_FREQ_DEBUG.
>> >
>> > That is already enabled.
>> >
>>
>> Ok, I got it.
>>
>> Could you test the patch below? Thanks!
>
> No change, sorry, still hangs right after "Disabling non-boot CPUs ..."
> before the machine turns off.
>

Oh, I see, then this will be another problem.

My previous patch is to fix the cpufreq lockdep warning mentioned
in Benjamin's report, so this hang should be caused by other problem,
not the cpufreq lockdep problem.

Thanks.
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