[PATCH] correct oldconfig for unset choice options

[Roman Zippel <zippel@linux-m68k.org>]

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@linux-m68k.org>

---
 scripts/kconfig/confdata.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6-mm/scripts/kconfig/confdata.c
===================================================================
--- linux-2.6-mm.orig/scripts/kconfig/confdata.c	2006-07-12 11:58:59.000000000 +0200
+++ linux-2.6-mm/scripts/kconfig/confdata.c	2006-07-12 12:17:20.000000000 +0200
@@ -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;
-
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