linux-kernel - Re: [PATCH] cpufreq: conservative: Simplify the condition of storing 'down

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Message-ID: <20231005105900.uctt4jna4wovt5g6@vireshk-i7>
Date:   Thu, 5 Oct 2023 16:29:00 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Liao Chang <liaochang1@...wei.com>
Cc:     rafael@...nel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpufreq: conservative: Simplify the condition of storing
 'down_threshold'

On 12-09-23, 06:09, Liao Chang wrote:
> The governor currently checks if the input new down_threshold is less
> than 100 before storing it. However, the up_threshold field of dbs_data
> structure is also limited to be less than 100, so this check is
> unnecessary and remove it.
> 
> Signed-off-by: Liao Chang <liaochang1@...wei.com>
> ---
>  drivers/cpufreq/cpufreq_conservative.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
> index b6bd0ff35323..56500b25d77c 100644
> --- a/drivers/cpufreq/cpufreq_conservative.c
> +++ b/drivers/cpufreq/cpufreq_conservative.c
> @@ -187,8 +187,7 @@ static ssize_t down_threshold_store(struct gov_attr_set *attr_set,
>  	ret = sscanf(buf, "%u", &input);
>  
>  	/* cannot be lower than 1 otherwise freq will not fall */
> -	if (ret != 1 || input < 1 || input > 100 ||
> -			input >= dbs_data->up_threshold)
> +	if (ret != 1 || input < 1 || input >= dbs_data->up_threshold)
>  		return -EINVAL;
>  
>  	cs_tuners->down_threshold = input;

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

-- 
viresh