[PATCH] kconfig: correct oldconfig for unset choice options

[sam]

From: Roman Zippel <zippel@xxxxxxxxxxxxxx>

oldconfig currently ignores unset choice options and doesn't ask for them.
Correct the SYMBOL_DEF_USER flag of the choice symbol to be only set if
it's set for all values.

Signed-off-by: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
 scripts/kconfig/confdata.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 2ee48c3..a69d8ac 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -357,7 +357,7 @@ int conf_read(const char *name)
 		for (e = prop->expr; e; e = e->left.expr)
 			if (e->right.sym->visible != no)
 				flags &= e->right.sym->flags;
-		sym->flags |= flags & SYMBOL_DEF_USER;
+		sym->flags &= flags | ~SYMBOL_DEF_USER;
 	}
 
 	sym_change_count += conf_warnings || conf_unsaved;
-- 
1.4.1.rc2.gfc04

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