linux-kernel - Re: [PATCH v2] devfreq: governor: Add a private governor

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Message-ID: <7cfeafef-519d-b6e7-77fb-bd5e611faf71@allwinnertech.com>
Date:   Fri, 14 Oct 2022 17:46:51 +0800
From:   Kant Fan <kant@...winnertech.com>
To:     Chanwoo Choi <cwchoi00@...il.com>, myungjoo.ham@...sung.com,
        kyungmin.park@...sung.com, cw00.choi@...sung.com
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] devfreq: governor: Add a private governor_data for
 governors in devfreq

On 10/13/2022 3:19 AM, Chanwoo Choi wrote:
> 
> In addition, the devfreq driver pass the 'data' from devfreq driver
> to governor by using devfreq_add_device. I think that 'devfreq driver'
> is more proper
> 
> * @data:	devfreq driver pass to governors, governor should not change it.
> 
> And then, there are extra changes required.
> 
> diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
> index 63347a5ae599..0c59b7978391 100644
> --- a/drivers/devfreq/devfreq.c
> +++ b/drivers/devfreq/devfreq.c
> @@ -776,8 +776,7 @@ static void remove_sysfs_files(struct devfreq *devfreq,
>    * @dev:       the device to add devfreq feature.
>    * @profile:   device-specific profile to run devfreq.
>    * @governor_name:     name of the policy to choose frequency.
> - * @data:      private data for the governor. The devfreq framework does not
> - *             touch this value.
> + * @data:      devfreq driver pass to governors, governor should not change it.
>    */
>   struct devfreq *devfreq_add_device(struct device *dev,
>                                     struct devfreq_dev_profile *profile,
> @@ -1011,8 +1010,7 @@ static void devm_devfreq_dev_release(struct device *dev, void *res)
>    * @dev:       the device to add devfreq feature.
>    * @profile:   device-specific profile to run devfreq.
>    * @governor_name:     name of the policy to choose frequency.
> - * @data:      private data for the governor. The devfreq framework does not
> - *             touch this value.
> + * @data:      devfreq driver pass to governors, governor should not change it.
>    *
>    * This function manages automatically the memory of devfreq device using device
>    * resource management and simplify the free operation for memory of devfreq
> 

Dear Chanwoo,
Thanks for your kindly advice. I've modified it as patch-v3 [1]. Please 
have a look.

[1] 
https://lore.kernel.org/all/20221014094359.100995-1-kant@allwinnertech.com/

-- 
Best Regards,
Kant Fan