linux-kernel - Re: [PATCH 1/2] sh: convert the last use of 'optional' property in Kconfig

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Date: Sun, 21 Apr 2024 19:51:17 +0200
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: Masahiro Yamada <masahiroy@...nel.org>, linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Yoshinori Sato
 <ysato@...rs.sourceforge.jp>,  Rich Felker <dalias@...c.org>,
 linux-sh@...r.kernel.org
Subject: Re: [PATCH 1/2] sh: convert the last use of 'optional' property in
 Kconfig

Hi Masahiro,

On Sun, 2024-04-21 at 21:08 +0900, Masahiro Yamada wrote:
> The 'choice' statement is primarily used to exclusively select one
> option, but the 'optional' property allows all entries to be disabled.
> 
> This feature is only used in arch/sh/Kconfig because the equivalent
> outcome can be achieved by inserting one more entry as a place-holder.
> This approach is commonly used, for example, LTO_NONE, DEBUG_INFO_NONE,
> INITRAMFS_COMPRESSION_NONE, etc.
> 
> The 'optional' property support will be removed from Kconfig.
> 
> This commit converts the last user.
> 
> Note:
>  The 'default CMDLINE_OVERWRITE' statement does not work as intended
>  in combination with 'optional'. If neither CONFIG_CMDLINE_OVERWRITE
>  nor CONFIG_CMD_EXTEND is specified in a defconfig file, both of them
>  are disabled. This is a bug. To maintain the current behavior, I
>  added CONFIG_CMD_NO_MODIFY=y to those defconfig files.
         ^^^^^^^^^^^^^^^^^^^^^^
     This would be CMDLINE_NO_MODIFY as used in the actual Kconfig files.

I am fine with the change per se, but could you rename CMDLINE_NO_MODIFY to
CMDLINE_FROM_BOOTLOADER as it's used on the other architectures such as arm
and powerpc, preferably using the same help text.

Also, I usually prefer the first word in the subject to be capitalized, i.e.

	sh: Convert the last use of 'optional' property in Kconfig

Thanks,
Adrian

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