From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:40428 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752098Ab0G0TWa (ORCPT ); Tue, 27 Jul 2010 15:22:30 -0400 Date: Tue, 27 Jul 2010 21:27:27 +0200 From: Ulf Magnusson Subject: [PATCH 2.6.35-rc6] kconfig: fix MODULES-related bug in case of no .config Message-ID: <20100727192727.GA17954@ulf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org Hi, There seems to be a kconfig bug due to MODULES not always being evaluated if no .config is found. Take the following Kconfig as an example: config MODULES def_bool y config FOO def_tristate m With no .config, the following configuration is generated: CONFIG_MODULES=y CONFIG_FOO=y With an empty .config, the following: CONFIG_MODULES=y CONFIG_FOO=m Tristate choice statements can also exhibit the problem, due to having an implicit rev_dep (select) containing "m". The problem is that MODULES is never evaluted in conf_read_simple() unless there's a .config. The following patch fixes this. Signed-off-by: Ulf Magnusson diff -uNr linux.vanilla/scripts/kconfig/confdata.c linux.new/scripts/kconfig/confdata.c --- linux.vanilla/scripts/kconfig/confdata.c 2010-07-27 16:47:43.443006287 +0200 +++ linux.new/scripts/kconfig/confdata.c 2010-07-27 16:50:19.795005537 +0200 @@ -170,8 +170,10 @@ if (in) goto load; sym_add_change_count(1); - if (!sym_defconfig_list) + if (!sym_defconfig_list) { + sym_calc_value(modules_sym); return 1; + } for_all_defaults(sym_defconfig_list, prop) { if (expr_calc_value(prop->visible.expr) == no ||