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Date: Fri, 10 May 2024 12:57:24 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Luca Ceresoli" <luca.ceresoli@...tlin.com>
Cc: "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
 "Rob Herring" <robh@...nel.org>,
 "Krzysztof Kozlowski" <krzk+dt@...nel.org>,
 "Conor Dooley" <conor+dt@...nel.org>,
 "Andrzej Hajda" <andrzej.hajda@...el.com>,
 "Neil Armstrong" <neil.armstrong@...aro.org>,
 "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>,
 "Dave Airlie" <airlied@...il.com>, "Daniel Vetter" <daniel@...ll.ch>,
 "derek.kiernan@....com" <derek.kiernan@....com>,
 "dragan.cvetic@....com" <dragan.cvetic@....com>,
 "Saravana Kannan" <saravanak@...gle.com>,
 "Paul Kocialkowski" <contact@...lk.fr>,
 "Herve Codina" <herve.codina@...tlin.com>,
 "Thomas Petazzoni" <thomas.petazzoni@...tlin.com>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org,
 "Paul Kocialkowski" <paul.kocialkowski@...tlin.com>
Subject: Re: [PATCH v2 5/5] misc: add ge-addon-connector driver

On Fri, May 10, 2024, at 12:54, Luca Ceresoli wrote:
> On Fri, 10 May 2024 12:24:06 +0200 "Arnd Bergmann" <arnd@...db.de> wrote:
>> On Fri, May 10, 2024, at 09:55, Greg Kroah-Hartman wrote:
>> > On Fri, May 10, 2024 at 09:10:41AM +0200, Luca Ceresoli wrote:  
>> >>  
>> >> +config GE_SUNH_CONNECTOR
>> >> +	tristate "GE SUNH hotplug add-on connector"
>> >> +	depends on OF
>> >> +	select OF_OVERLAY
>> >> +	select FW_LOADER
>> >> +	select NVMEM
>> >> +	select DRM_HOTPLUG_BRIDGE  
>> >
>> > Can these be depends instead of select?  'select' causes dependencies
>> > that are hard, if not almost impossible, to detect at times why
>> > something is being enabled.  
>> 
>> I think FW_LOADER needs to be 'select' since it is normally
>> a hidden symbol and gets selected by its users, all the other
>> ones should be 'depends on'.
>
> I see, makes sense.
>
> And as you pointed that out, I realize perhaps DRM_HOTPLUG_BRIDGE could
> become a hidden symbol as it's not expected to be used alone.

It's slightly easier to keep it as a visible symbol
with 'depends on' though, since otherwise you have to
add 'depends on' statments for anything that DRM_HOTPLUG_BRIDGE
in turn depends on, most notably DRM itself.

     Arnd

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