linux-kernel - Re: kconfig: tristate choice with depender choice

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Date:	Thu, 9 Feb 2012 00:08:03 -0500
From:	Arnaud Lacombe <lacombar@...il.com>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
Cc:	Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: kconfig: tristate choice with depender choice

Hi,

On Mon, Feb 6, 2012 at 7:16 PM, Atsushi Nemoto <anemo@....ocn.ne.jp> wrote:
> If a tristate choice has another choice dependers, kconfig produce
> wrong value.
>
> Example:
>
> choice
>        prompt "choice list AB"
> config A
>        tristate "a"
> config B
>        tristate "b"
> endchoice
> choice
>        prompt "choice list CD"
>        depends on A
> config C
>        bool "c"
> config D
>        bool "d"
> endchoice
>
> kconfig outputs CONFIG_A=m from defconfig with CONFIG_A=y.
>
> This happens if the choice list CD depends on A.
> Also, if defconfig contains CONFIG_A=y and "# CONFIG_B is not set",
> output is correct.
>
confirmed.

> I found commit a64b44ea ("kconfig: fix tristate choice with minimal
> config"), but this problem still exists on v3.3-rc1.  More fix is
> needed for choice with dependers?
>
it would seem so.

 - Arnaud
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