linux-kernel - Re: [PATCH] driver core: make device_is

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Message-ID: <CAJZ5v0j-+AbutYRbvoU_8Du6VNevvRW_HOD5BZAzgOSoy2ZiuQ@mail.gmail.com>
Date:   Tue, 28 Nov 2023 14:00:10 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Saravana Kannan <saravanak@...gle.com>
Subject: Re: [PATCH] driver core: make device_is_dependent() static

On Tue, Nov 28, 2023 at 11:28 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> The function device_is_dependent() is only called by the driver core
> internally and should not, at this time, be called by anyone else
> outside of it, so mark it as static so as not to give driver authors the
> wrong idea.
>
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Cc: Saravana Kannan <saravanak@...gle.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

> ---
>  drivers/base/core.c    | 2 +-
>  include/linux/device.h | 1 -
>  2 files changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index dafdb9970901..6dcc26eec096 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -298,7 +298,7 @@ static inline bool device_link_flag_is_sync_state_only(u32 flags)
>   * Check if @target depends on @dev or any device dependent on it (its child or
>   * its consumer etc).  Return 1 if that is the case or 0 otherwise.
>   */
> -int device_is_dependent(struct device *dev, void *target)
> +static int device_is_dependent(struct device *dev, void *target)
>  {
>         struct device_link *link;
>         int ret;
> diff --git a/include/linux/device.h b/include/linux/device.h
> index c11d60cabaab..6a4ee40af3df 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -1071,7 +1071,6 @@ int device_rename(struct device *dev, const char *new_name);
>  int device_move(struct device *dev, struct device *new_parent,
>                 enum dpm_order dpm_order);
>  int device_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
> -int device_is_dependent(struct device *dev, void *target);
>
>  static inline bool device_supports_offline(struct device *dev)
>  {
> --
> 2.43.0
>