linux-kernel - Re: [PATCH 7/7] driver core: make sysfs_dev_char

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Date:   Fri, 31 Mar 2023 16:50:59 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH 7/7] driver core: make sysfs_dev_char_kobj static

On Fri, Mar 31, 2023 at 11:33 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> Nothing outside of drivers/base/core.c uses sysfs_dev_char_kobj, so
> make it static and document what it is used for so we remember it the
> next time we touch it 15 years from now.
>
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Acked-by: Rafael J. Wysocki <rafael@...nel.org>

> ---
>  drivers/base/base.h | 3 ---
>  drivers/base/core.c | 4 +++-
>  2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/base/base.h b/drivers/base/base.h
> index 4660e1159ee0..e96f3343fd7c 100644
> --- a/drivers/base/base.h
> +++ b/drivers/base/base.h
> @@ -191,9 +191,6 @@ const char *device_get_devnode(const struct device *dev, umode_t *mode,
>  extern struct kset *devices_kset;
>  void devices_kset_move_last(struct device *dev);
>
> -/* /sys/dev/char directory */
> -extern struct kobject *sysfs_dev_char_kobj;
> -
>  #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
>  void module_add_driver(struct module *mod, struct device_driver *drv);
>  void module_remove_driver(struct device_driver *drv);
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index cf6f41c2060c..47e16c088e77 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -2255,7 +2255,9 @@ static void fw_devlink_link_device(struct device *dev)
>  int (*platform_notify)(struct device *dev) = NULL;
>  int (*platform_notify_remove)(struct device *dev) = NULL;
>  static struct kobject *dev_kobj;
> -struct kobject *sysfs_dev_char_kobj;
> +
> +/* /sys/dev/char */
> +static struct kobject *sysfs_dev_char_kobj;
>
>  /* /sys/dev/block */
>  static struct kobject *sysfs_dev_block_kobj;
> --
> 2.40.0
>