Subject: Re: [PATCH v3 11/15] livepatch: use kstrtobool() in enabled_store()

From: Petr Mladek <[email-masked]>
Date: Fri, 16 Dec 2016 17:55:55 +0100

On Thu 2016-12-08 12:08:36, Josh Poimboeuf wrote:
> The sysfs enabled value is a boolean, so kstrtobool() is a better fit
> for parsing the input string since it does the range checking for us.
> 
> Suggested-by: Petr Mladek <[email-masked]>
> Signed-off-by: Josh Poimboeuf <[email-masked]>
> ---
>  kernel/livepatch/core.c | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
> index 6a137e1..8ca8a0e 100644
> --- a/kernel/livepatch/core.c
> +++ b/kernel/livepatch/core.c
> @@ -408,26 +408,23 @@ static ssize_t enabled_store(struct kobject *kobj, struct kobj_attribute *attr,
>  {
>  	struct klp_patch *patch;
>  	int ret;
> -	unsigned long val;
> +	bool enabled;
>  
> -	ret = kstrtoul(buf, 10, &val);
> +	ret = kstrtobool(buf, &enabled);
>  	if (ret)
>  		return -EINVAL;

I would return "ret" here. It is -EINVAL as well but... ;-)

Anyway, feel free to use:

Reviewed-by: Petr Mladek <[email-masked]>

Best Regards,
Petr