linux-kernel - Re: [PATCH] powercap: Replace symbolic permissions with octal permissions

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Date:   Wed, 30 Jun 2021 19:41:21 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Jinchao Wang <wjc@...rlc.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>
Subject: Re: [PATCH] powercap: Replace symbolic permissions with octal permissions

On Thu, Jun 24, 2021 at 10:44 AM Jinchao Wang <wjc@...rlc.com> wrote:
>
> Resolve following checkpatch issue,
> Replace symbolic permissions with octal permissions

I don't see much value in this replacement and checkpatch complaining
about the existing code base is not something to worry about in
general.

> Signed-off-by: Jinchao Wang <wjc@...rlc.com>
> ---
>  drivers/powercap/powercap_sys.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
> index f0654a932b37..e706548c59bb 100644
> --- a/drivers/powercap/powercap_sys.c
> +++ b/drivers/powercap/powercap_sys.c
> @@ -223,46 +223,46 @@ static int seed_constraint_attributes(void)
>
>         for (i = 0; i < MAX_CONSTRAINTS_PER_ZONE; ++i) {
>                 ret = create_constraint_attribute(i, "power_limit_uw",
> -                                       S_IWUSR | S_IRUGO,
> +                                       0644,
>                                         &constraint_attrs[i].power_limit_attr,
>                                         show_constraint_power_limit_uw,
>                                         store_constraint_power_limit_uw);
>                 if (ret)
>                         goto err_alloc;
>                 ret = create_constraint_attribute(i, "time_window_us",
> -                                       S_IWUSR | S_IRUGO,
> +                                       0644,
>                                         &constraint_attrs[i].time_window_attr,
>                                         show_constraint_time_window_us,
>                                         store_constraint_time_window_us);
>                 if (ret)
>                         goto err_alloc;
> -               ret = create_constraint_attribute(i, "name", S_IRUGO,
> +               ret = create_constraint_attribute(i, "name", 0444,
>                                 &constraint_attrs[i].name_attr,
>                                 show_constraint_name,
>                                 NULL);
>                 if (ret)
>                         goto err_alloc;
> -               ret = create_constraint_attribute(i, "max_power_uw", S_IRUGO,
> +               ret = create_constraint_attribute(i, "max_power_uw", 0444,
>                                 &constraint_attrs[i].max_power_attr,
>                                 show_constraint_max_power_uw,
>                                 NULL);
>                 if (ret)
>                         goto err_alloc;
> -               ret = create_constraint_attribute(i, "min_power_uw", S_IRUGO,
> +               ret = create_constraint_attribute(i, "min_power_uw", 0444,
>                                 &constraint_attrs[i].min_power_attr,
>                                 show_constraint_min_power_uw,
>                                 NULL);
>                 if (ret)
>                         goto err_alloc;
>                 ret = create_constraint_attribute(i, "max_time_window_us",
> -                               S_IRUGO,
> +                               0444,
>                                 &constraint_attrs[i].max_time_window_attr,
>                                 show_constraint_max_time_window_us,
>                                 NULL);
>                 if (ret)
>                         goto err_alloc;
>                 ret = create_constraint_attribute(i, "min_time_window_us",
> -                               S_IRUGO,
> +                               0444,
>                                 &constraint_attrs[i].min_time_window_attr,
>                                 show_constraint_min_time_window_us,
>                                 NULL);
> @@ -366,9 +366,9 @@ static void create_power_zone_common_attributes(
>                                         &dev_attr_max_energy_range_uj.attr;
>         if (power_zone->ops->get_energy_uj) {
>                 if (power_zone->ops->reset_energy_uj)
> -                       dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUSR;
> +                       dev_attr_energy_uj.attr.mode = 0600;
>                 else
> -                       dev_attr_energy_uj.attr.mode = S_IRUSR;
> +                       dev_attr_energy_uj.attr.mode = 0400;
>                 power_zone->zone_dev_attrs[count++] =
>                                         &dev_attr_energy_uj.attr;
>         }
> --
> 2.31.1
>
>
>