linux-kernel - Re: [PATCH 1/6] devfreq: add basic fileds supporting suspend functionality

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Date:   Mon, 3 Dec 2018 15:03:33 +0100
From:   Lukasz Luba <l.luba@...tner.samsung.com>
To:     myungjoo.ham@...sung.com,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Cc:     "tjakobi@...h.uni-bielefeld.de" <tjakobi@...h.uni-bielefeld.de>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "len.brown@...el.com" <len.brown@...el.com>,
        "pavel@....cz" <pavel@....cz>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "keescook@...omium.org" <keescook@...omium.org>,
        "anton@...msg.org" <anton@...msg.org>,
        "ccross@...roid.com" <ccross@...roid.com>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "kgene@...nel.org" <kgene@...nel.org>,
        "krzk@...nel.org" <krzk@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH 1/6] devfreq: add basic fileds supporting suspend
 functionality

Hi MyungJoo,

On 11/26/18 9:14 AM, MyungJoo Ham wrote:
>> The patch prepares devfreq device for handling suspend/resume functionality.
>> The new fields will store needed information during this process.
>> Devfreq framework handles opp-suspend DT entry and there is no need of
>> modyfications in the drivers code.
>>
>> The patch draws on Tobias Jakobi's work posted ~2 years ago, who tried to
>> solve issue with devfreq device's frequency during suspend/resume.
>> During the discussion on LKML some corner cases and comments appeared
>> related to the design. This patch address them keeping in mind suggestions
>>from Chanwoo Choi.
>>
>> Suggested-by: Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>
>> Suggested-by: Chanwoo Choi <cw00.choi@...sung.com>
>> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> 
> When you add new elements in a common struct (i.e., struct devfreq),
> please describe kindly in the doxygen entries so that developers
> may understand before reading all places where the new elements are
> used.
> 
> You have added three new elements and there is no explanations on them.
You are right, thank you for the review.
I will fix it in the next patch set version.

Regards,
Lukasz

> 
> 
> Cheers,
> MyungJoo
> 
> 
>