linux-kernel - Re: [PATCH 1/3] Revert "driver core: Export device_is

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Date:   Tue, 28 Nov 2023 09:24:16 +0100
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Liu Ying <victor.liu@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 1/3] Revert "driver core: Export device_is_dependent() to
 modules"

On 28/11/2023 00:10, Linus Walleij wrote:
> This reverts commit 1d5e8f4bf06da86b71cc9169110d1a0e1e7af337.
> 
> Greg says: "why exactly is this needed?  Nothing outside of
> the driver core should be needing this function, it shouldn't
> be public at all (I missed that before.)
> 
> So please, revert it for now, let's figure out why DRM thinks
> this is needed for it's devices, and yet no other bus/subsystem
> does."
> 
> Link: https://lore.kernel.org/dri-devel/2023112739-willing-sighing-6bdd@gregkh/
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>   drivers/base/core.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index bfd2bf0364b7..67ba592afc77 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -328,7 +328,6 @@ int device_is_dependent(struct device *dev, void *target)
>   	}
>   	return ret;
>   }
> -EXPORT_SYMBOL_GPL(device_is_dependent);
>   
>   static void device_link_init_status(struct device_link *link,
>   				    struct device *consumer,
> 

Acked-by: Neil Armstrong <neil.armstrong@...aro.org>