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

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Date:	Tue, 07 Feb 2012 11:35:13 +0100
From:	Michal Marek <mmarek@...e.cz>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
Cc:	Sam Ravnborg <sam@...nborg.org>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, Arnaud Lacombe <lacombar@...il.com>
Subject: Re: kconfig: tristate choice with depender choice

(added Arnaud to CC)

On 7.2.2012 01:16, Atsushi Nemoto 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.
> 
> 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?
> 
> ---
> Atsushi Nemoto

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