[PATCH] kconfig: fix restart for choice symbols

The restart check whether new symbols became visible, didn't always work for
choice symbols.  Even if a choice symbol itself isn't changable, the childs
are.  This also requires to update the new status of all choice values, once
one of them is set.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

scripts/kconfig/conf.c

@@ -467,15 +467,14 @@ static void check_conf(struct menu *menu)
 		return;
 
 	sym = menu->sym;
-	if (sym) {
-		if (sym_is_changable(sym) && !sym_has_value(sym)) {
+	if (sym && !sym_has_value(sym)) {
+		if (sym_is_changable(sym) ||
+		    (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 			if (!conf_cnt++)
 				printf(_("*\n* Restart config...\n*\n"));
 			rootEntry = menu_get_parent_menu(menu);
 			conf(rootEntry);
 		}
-		if (sym_is_choice(sym) && sym_get_tristate_value(sym) != mod)
-			return;
 	}
 
 	for (child = menu->list; child; child = child->next)

scripts/kconfig/symbol.c

@@ -380,11 +380,22 @@ bool sym_set_tristate_value(struct symbol *sym, tristate val)
 		sym->flags &= ~SYMBOL_NEW;
 		sym_set_changed(sym);
 	}
+	/*
+	 * setting a choice value also resets the new flag of the choice
+	 * symbol and all other choice values.
+	 */
 	if (sym_is_choice_value(sym) && val == yes) {
 		struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
+		struct property *prop;
+		struct expr *e;
 
 		cs->user.val = sym;
 		cs->flags &= ~SYMBOL_NEW;
+		prop = sym_get_choice_prop(cs);
+		for (e = prop->expr; e; e = e->left.expr) {
+			if (e->right.sym->visible != no)
+				e->right.sym->flags &= ~SYMBOL_NEW;
+		}
 	}
 
 	sym->user.tri = val;