From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 14 Aug 2010 21:22:16 +0000 (+0200)
Subject: kconfig: fix savedefconfig with choice marked optional
X-Git-Tag: v2.6.36-rc3~45^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84062dd3a6a045395a43de1d9adc9b8eb2d1426e;p=pandora-kernel.git

kconfig: fix savedefconfig with choice marked optional

savedefconfig failed to save the correct minimal config
when it encountered a choice marked optional.

Consider following minimal configuration:
$cat Kconfig
choice
	prompt "choice"
	optional

config A
	bool "a"

config B
	bool "b"

endchoice

$cat .config | grep -v ^#
CONFIG_A=y

$conf --savedefconfig=defconfig Kconfig

would before this fix result in an empty file, because
kconfig would assume that CONFIG_A=y is a default value.
But because the choice is optional the default is that
both A and B are =n.

Fix so we handle optional choices correct.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
---

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