linux-kernel - Re: [PATCH] ACPI: sysfs: use default_groups in kobj

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Date:   Tue, 28 Dec 2021 19:16:40 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH] ACPI: sysfs: use default_groups in kobj_type

On Tue, Dec 28, 2021 at 2:14 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> There are currently 2 ways to create a set of sysfs files for a
> kobj_type, through the default_attrs field, and the default_groups
> field.  Move the ACPI sysfs code to use default_groups field which has
> been the preferred way since aa30f47cf666 ("kobject: Add support for
> default attribute groups to kobj_type") so that we can soon get rid of
> the obsolete default_attrs field.
>
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Cc: Len Brown <lenb@...nel.org>
> Cc: linux-acpi@...r.kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Applied as 5.17 material, thanks!

> ---
>  drivers/acpi/cppc_acpi.c    | 3 ++-
>  drivers/acpi/device_sysfs.c | 3 ++-
>  drivers/acpi/sysfs.c        | 3 ++-
>  3 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> index a85c351589be..d251b2a1cd15 100644
> --- a/drivers/acpi/cppc_acpi.c
> +++ b/drivers/acpi/cppc_acpi.c
> @@ -179,10 +179,11 @@ static struct attribute *cppc_attrs[] = {
>         &lowest_freq.attr,
>         NULL
>  };
> +ATTRIBUTE_GROUPS(cppc);
>
>  static struct kobj_type cppc_ktype = {
>         .sysfs_ops = &kobj_sysfs_ops,
> -       .default_attrs = cppc_attrs,
> +       .default_groups = cppc_groups,
>  };
>
>  static int check_pcc_chan(int pcc_ss_id, bool chk_err_bit)
> diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
> index 61271e61c307..d5d6403ba07b 100644
> --- a/drivers/acpi/device_sysfs.c
> +++ b/drivers/acpi/device_sysfs.c
> @@ -53,6 +53,7 @@ static struct attribute *acpi_data_node_default_attrs[] = {
>         &data_node_path.attr,
>         NULL
>  };
> +ATTRIBUTE_GROUPS(acpi_data_node_default);
>
>  #define to_data_node(k) container_of(k, struct acpi_data_node, kobj)
>  #define to_attr(a) container_of(a, struct acpi_data_node_attr, attr)
> @@ -79,7 +80,7 @@ static void acpi_data_node_release(struct kobject *kobj)
>
>  static struct kobj_type acpi_data_node_ktype = {
>         .sysfs_ops = &acpi_data_node_sysfs_ops,
> -       .default_attrs = acpi_data_node_default_attrs,
> +       .default_groups = acpi_data_node_default_groups,
>         .release = acpi_data_node_release,
>  };
>
> diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
> index 00c0ebaab29f..a4b638bea6f1 100644
> --- a/drivers/acpi/sysfs.c
> +++ b/drivers/acpi/sysfs.c
> @@ -939,10 +939,11 @@ static struct attribute *hotplug_profile_attrs[] = {
>         &hotplug_enabled_attr.attr,
>         NULL
>  };
> +ATTRIBUTE_GROUPS(hotplug_profile);
>
>  static struct kobj_type acpi_hotplug_profile_ktype = {
>         .sysfs_ops = &kobj_sysfs_ops,
> -       .default_attrs = hotplug_profile_attrs,
> +       .default_groups = hotplug_profile_groups,
>  };
>
>  void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
> --
> 2.34.1
>