linux-kernel - Re: [PATCH] firmware: remove old CONFIG_FW_LOADER

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Message-ID: <Yd3ZDNpOP6fMlfsp@zn.tnic>
Date:   Tue, 11 Jan 2022 20:22:52 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firmware: remove old CONFIG_FW_LOADER_MODULE test

On Tue, Jan 11, 2022 at 11:00:19AM -0800, Luis Chamberlain wrote:
> Yeah I think this comes from the fact that modules get a respective
> _MODULE define in the generated file
> include/generated/autoconf.h 
> 
> For example:
> 
> vagrant@...vops-dev /data/linux-next (git::20211203-umh-fix-exitcodes)$
> grep CONFIG_CRC8 .config
> CONFIG_CRC8=m
> vagrant@...vops-dev /data/linux-next (git::20211203-umh-fix-exitcodes)$
> grep CONFIG_CRC8 include/generated/autoconf.h
> #define CONFIG_CRC8_MODULE 1 
> 
> So I think the above was put in place to ask if its built-in or a
> module.

Talk about magic:

$ grep FW_LOADER .config
CONFIG_FW_LOADER=m
$ grep FW_LOADER include/generated/autoconf.h 
#define CONFIG_FW_LOADER_MODULE 1

It is probably even documented somewhere that the build generates
CONFIG_%s_MODULE defines for testing in code...

-- 
Regards/Gruss,
    Boris.

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