linux-kernel - Re: [PATCH 2/2] driver core: class.h: remove extern from function prototypes

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Message-ID: <CAJZ5v0jt8=VGpRjiry-hmyJjpE4YEeWi71-4UUxviaZk7xNpSQ@mail.gmail.com>
Date:   Fri, 24 Mar 2023 14:42:23 +0100
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 2/2] driver core: class.h: remove extern from function prototypes

On Fri, Mar 24, 2023 at 11:01 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> The kernel coding style does not require 'extern' in function prototypes
> in .h files, so remove them from include/linux/device/class.h as they
> are not needed.
>
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

> ---
>  include/linux/device/class.h | 46 ++++++++++++++++--------------------
>  1 file changed, 20 insertions(+), 26 deletions(-)
>
> diff --git a/include/linux/device/class.h b/include/linux/device/class.h
> index 03d2f99f84c5..1dc7706cb42d 100644
> --- a/include/linux/device/class.h
> +++ b/include/linux/device/class.h
> @@ -82,8 +82,9 @@ struct class_dev_iter {
>
>  extern struct kobject *sysfs_dev_block_kobj;
>  extern struct kobject *sysfs_dev_char_kobj;
> -extern int __must_check class_register(struct class *class);
> -extern void class_unregister(struct class *class);
> +
> +int __must_check class_register(struct class *class);
> +void class_unregister(struct class *class);
>
>  struct class_compat;
>  struct class_compat *class_compat_register(const char *name);
> @@ -93,19 +94,15 @@ int class_compat_create_link(struct class_compat *cls, struct device *dev,
>  void class_compat_remove_link(struct class_compat *cls, struct device *dev,
>                               struct device *device_link);
>
> -extern void class_dev_iter_init(struct class_dev_iter *iter,
> -                               const struct class *class,
> -                               const struct device *start,
> -                               const struct device_type *type);
> -extern struct device *class_dev_iter_next(struct class_dev_iter *iter);
> -extern void class_dev_iter_exit(struct class_dev_iter *iter);
> +void class_dev_iter_init(struct class_dev_iter *iter, const struct class *class,
> +                        const struct device *start, const struct device_type *type);
> +struct device *class_dev_iter_next(struct class_dev_iter *iter);
> +void class_dev_iter_exit(struct class_dev_iter *iter);
>
> -extern int class_for_each_device(const struct class *class, const struct device *start,
> -                                void *data,
> -                                int (*fn)(struct device *dev, void *data));
> -extern struct device *class_find_device(const struct class *class,
> -                                       const struct device *start, const void *data,
> -                                       int (*match)(struct device *, const void *));
> +int class_for_each_device(const struct class *class, const struct device *start, void *data,
> +                         int (*fn)(struct device *dev, void *data));
> +struct device *class_find_device(const struct class *class, const struct device *start,
> +                                const void *data, int (*match)(struct device *, const void *));
>
>  /**
>   * class_find_device_by_name - device iterator for locating a particular device
> @@ -191,12 +188,10 @@ struct class_attribute {
>  #define CLASS_ATTR_WO(_name) \
>         struct class_attribute class_attr_##_name = __ATTR_WO(_name)
>
> -extern int __must_check class_create_file_ns(const struct class *class,
> -                                            const struct class_attribute *attr,
> -                                            const void *ns);
> -extern void class_remove_file_ns(const struct class *class,
> -                                const struct class_attribute *attr,
> -                                const void *ns);
> +int __must_check class_create_file_ns(const struct class *class, const struct class_attribute *attr,
> +                                     const void *ns);
> +void class_remove_file_ns(const struct class *class, const struct class_attribute *attr,
> +                         const void *ns);
>
>  static inline int __must_check class_create_file(const struct class *class,
>                                                  const struct class_attribute *attr)
> @@ -223,8 +218,7 @@ struct class_attribute_string {
>         struct class_attribute_string class_attr_##_name = \
>                 _CLASS_ATTR_STRING(_name, _mode, _str)
>
> -extern ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr,
> -                        char *buf);
> +ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr, char *buf);
>
>  struct class_interface {
>         struct list_head        node;
> @@ -234,10 +228,10 @@ struct class_interface {
>         void (*remove_dev)      (struct device *, struct class_interface *);
>  };
>
> -extern int __must_check class_interface_register(struct class_interface *);
> -extern void class_interface_unregister(struct class_interface *);
> +int __must_check class_interface_register(struct class_interface *);
> +void class_interface_unregister(struct class_interface *);
>
> -extern struct class * __must_check class_create(const char *name);
> -extern void class_destroy(struct class *cls);
> +struct class * __must_check class_create(const char *name);
> +void class_destroy(struct class *cls);
>
>  #endif /* _DEVICE_CLASS_H_ */
> --
> 2.40.0
>