linux-kernel - Re: [PATCH] misc: remove redundant 'default n' from Kconfig-s

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Date:   Mon, 20 May 2019 19:55:55 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Donnellan <ajd@...ux.ibm.com>,
        Eric Piel <eric.piel@...mplin-utc.net>,
        Frank Haverkamp <haver@...ux.ibm.com>,
        Frederic Barrat <fbarrat@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] misc: remove redundant 'default n' from Kconfig-s

On Mon, May 20, 2019 at 04:10:46PM +0200, Bartlomiej Zolnierkiewicz wrote:
> 'default n' is the default value for any bool or tristate Kconfig
> setting so there is no need to write it explicitly.
> 
> Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO
> is not set' for visible symbols") the Kconfig behavior is the same
> regardless of 'default n' being present or not:
> 
>     ...
>     One side effect of (and the main motivation for) this change is making
>     the following two definitions behave exactly the same:
>     
>         config FOO
>                 bool
>     
>         config FOO
>                 bool
>                 default n
>     
>     With this change, neither of these will generate a
>     '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied).
>     That might make it clearer to people that a bare 'default n' is
>     redundant.
>     ...
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
[...]
>  drivers/misc/cb710/Kconfig        |    1 -

Acked-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>