Re: [PATCH] PM / devfreq: Use freq_table for available_frequencies

[Saravana Kannan <skannan@codeaurora.org>]

On 04/14/2014 11:30 PM, 함명주 wrote:
>> On 04/14/2014 06:36 PM, 함명주 wrote:
>>>> MyungJoo/Kyungmin,
>>>>
>>>> Bump. Can we accept this patch please?
>>>>
>>>> -Saravana
>>>
>>> Nack.
>>>
>>> Please note that freq_table is also an optional value, which may
>>> be null.
>>
>> Ah, I saw that the max_freq would be zero if freq_table was NULL and I
>> assumed that it can't be NULL. But I see that the max_freq limit is not
>> applied if it's zero. Thanks for catching it.
>>
>>> Besides, please be aware that your code is under rcu_read_lock().
>>
>> Valid point. I was just trying to keep the diff simple. No one's really
>> going to be catting this file often when performance matters.
>>
>>>
>>>
>>> Cheers,
>>> MyungJoo.
>>>
>>> ps. I'll send a related patch (avoid accessing null but not-an-error
>>> pointer at other sysfs nodes). Thank you for letting me catch such bugs anyway.
>>
>> I can go ahead and do this myself if you don't mind.
> 
> No, we don't need it. It was a false alarm.
> Reading again, I've found that we've already made other sysfs nodes
> check if either freq_table is null or its size is 0.
> 
> So, we only need to look at this available_frequencies node now.
> 
> I'll add some notes on the ABI doc for available_frequencies soon.
> 

Ah, I misunderstood your previous email. I thought you Nack-ed my patch
and decided to send your own patch to replace mine. Ok, I'll fix up mine
and send it out.

-Saravana


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