linux-kernel - Re: [RESEND] drivers: cpufreq: use kstrtoul instead of obsolete simple

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Date:   Mon, 22 Apr 2019 12:41:29 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     mohankumar718@...il.com
Cc:     rjw@...ysocki.net, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, lkp@...el.com
Subject: Re: [RESEND] drivers: cpufreq: use kstrtoul instead of obsolete
 simple_strtoul issue fixed

You mentioned RESEND in $subject, which is incorrect. This isn't a
simple resend but you changed the code. You should have mentioned V2
in $subject and ...

On 21-04-19, 18:05, mohankumar718@...il.com wrote:
> From: Mohan Kumar <mohankumar718@...il.com>
> 
> Replace the obsolte simple_strtoul function with kstrtoul.
> 
> Signed-off-by: Mohan Kumar <mohankumar718@...il.com>
> ---

Mentioned V1->V2 diff right here in the patch.

>  drivers/cpufreq/elanfreq.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c
> index 03419f064752..6d861c2364e2 100644
> --- a/drivers/cpufreq/elanfreq.c
> +++ b/drivers/cpufreq/elanfreq.c
> @@ -184,7 +184,8 @@ static int elanfreq_cpu_init(struct cpufreq_policy *policy)
>   */
>  static int __init elanfreq_setup(char *str)
>  {
> -	max_freq = simple_strtoul(str, &str, 0);
> +	unsigned long int val = 0;

A blank line here would be nice.

> +	max_freq = kstrtoul(str, 0, &val);

And this looks wrong. The value isn't returned by kstrtoul but an
error message or 0.

>  	pr_warn("You're using the deprecated elanfreq command line option. Use elanfreq.max_freq instead, please!\n");
>  	return 1;
>  }
> -- 
> 2.17.1

-- 
viresh