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Subject: Re: [PATCH] devfreq: Register devfreq as a cooling device
To:     Steven Price <steven.price@arm.com>, cwchoi00@gmail.com,
        kyungmin.park@samsung.com, myungjoo.ham@samsung.com
Cc:     linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Qiang Yu <yuq825@gmail.com>, David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
        Rob Herring <robh@kernel.org>,
        Tomeu Vizoso <tomeu.vizoso@collabora.com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
        "open list:DRM DRIVERS FOR LIMA" <dri-devel@lists.freedesktop.org>,
        "moderated list:DRM DRIVERS FOR LIMA" <lima@lists.freedesktop.org>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <linux-arm-msm@vger.kernel.org>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <freedreno@lists.freedesktop.org>
References: <20210304125034.28404-1-daniel.lezcano@linaro.org>
 <23db1b13-9418-91f5-4871-f45b983f6e3c@arm.com>
From:   Daniel Lezcano <daniel.lezcano@linaro.org>
Message-ID: <e8c5f550-0ca5-b4e4-1113-3af760d2780e@linaro.org>
Date:   Fri, 5 Mar 2021 10:10:16 +0100
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On 05/03/2021 09:12, Steven Price wrote:
> On 04/03/2021 12:50, Daniel Lezcano wrote:
>> Currently the default behavior is to manually having the devfreq
>> backend to register themselves as a devfreq cooling device.
>>
>> There are no so many and actually it makes more sense to register the
>> devfreq device when adding it.
>>
>> Consequently, every devfreq becomes a cooling device like cpufreq is.
>>
>> Having a devfreq being registered as a cooling device can not mitigate
>> a thermal zone if it is not bound to this one. Thus, the current
>> configurations are not impacted by this change.
>>
>> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>> ---

[ ... ]

>>       if (pfdevfreq->opp_of_table_added) {
>>           dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
>>           pfdevfreq->opp_of_table_added = false;
> 
> You've removed all references to pfdevfreq->cooling, so please also
> remove the member from struct panfrost_devfreq (as already done with
> lima and msm).

Sure, thanks for spotting this.


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