linux-kernel - Re: [PATCH v2 1/2] cpufreq: Return -EOPNOTSUPP if no policy is boost supported

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Message-ID: <bgxodgc7glo2hwbam5lmj6fo3x7ngoymncxydm2bduf3aoz22q@uri54qj4q6ju>
Date: Mon, 1 Dec 2025 09:13:59 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Lifeng Zheng <zhenglifeng1@...wei.com>
Cc: rafael@...nel.org, linux-pm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linuxarm@...wei.com, jonathan.cameron@...wei.com, 
	zhanjie9@...ilicon.com, lihuisong@...wei.com, yubowen8@...wei.com, 
	zhangpengjie2@...wei.com, wangzhi12@...wei.com, linhongye@...artners.com
Subject: Re: [PATCH v2 1/2] cpufreq: Return -EOPNOTSUPP if no policy is boost
 supported

On 28-11-25, 17:13, Lifeng Zheng wrote:
> In cpufreq_boost_trigger_state(), if all the policies are boost
> unsupported, policy_set_boost() will not be called and this function will
> return 0. But it is better to return an error to indicate that the platform
> doesn't support boost.
> 
> Signed-off-by: Lifeng Zheng <zhenglifeng1@...wei.com>
> ---
>  drivers/cpufreq/cpufreq.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index e8d7544b77b8..a4399e5490da 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -2806,7 +2806,7 @@ static int cpufreq_boost_trigger_state(int state)
>  {
>  	struct cpufreq_policy *policy;
>  	unsigned long flags;
> -	int ret = 0;
> +	int ret = -EOPNOTSUPP;
>  
>  	/*
>  	 * Don't compare 'cpufreq_driver->boost_enabled' with 'state' here to
> @@ -2826,6 +2826,10 @@ static int cpufreq_boost_trigger_state(int state)
>  		if (ret)
>  			goto err_reset_state;
>  	}
> +
> +	if (ret)
> +		goto err_reset_state;
> +
>  	cpus_read_unlock();
>  
>  	return 0;

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh