Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753121Ab3EFNMD (ORCPT ); Mon, 6 May 2013 09:12:03 -0400 Received: from mail.free-electrons.com ([94.23.35.102]:46637 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754130Ab3EFNL7 (ORCPT ); Mon, 6 May 2013 09:11:59 -0400 Date: Mon, 6 May 2013 10:11:52 -0300 From: Ezequiel Garcia To: "Yann E. MORIN" Cc: Mauro Carvalho Chehab , Randy Dunlap , Ezequiel =?utf-8?Q?Garc=C3=ADa?= , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media , linux-kbuild@vger.kernel.org Subject: Re: Splitting stk1160-ac97 as a module (Re: linux-next: Tree for May 1 (media/usb/stk1160)) Message-ID: <20130506131150.GB18007@localhost> References: <20130501183734.7ad1efca2d06e75432edabbd@canb.auug.org.au> <518157EB.3010700@infradead.org> <51827DB1.7000304@redhat.com> <20130504172142.GA21656@localhost> <20130504195950.GA3254@free.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20130504195950.GA3254@free.fr> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1683 Lines: 56 On Sat, May 04, 2013 at 09:59:50PM +0200, Yann E. MORIN wrote: > Ezequiel, All, > > On Sat, May 04, 2013 at 02:21:44PM -0300, Ezequiel Garcia wrote: > > I'm trying to split the ac97 support into a separate module. > > So far I've managed to do this with two different approaches, > > but both of them are broken in some way :-( > > > > Couple questions: > > > > 1. Is it possible to force two symbols to be both built-in (=y) or both > > modules (=m)? This would make one of my solutions work. > > If they are always the same value, there is no need to have two symbols > in the first place. > > However, given the original problem from this thread, if what you meant > was to have the second symbol either 'n' or the same as the first symbol, > ie. the following table: > > A: n m m y y > B: n n m n y > > Then the closest I came up with is: > > config MODULES > bool "Modules" > > config A > tristate "A" > > config B_dummy > bool "B" > depends on A > > config B > tristate > default m if A=m && B_dummy > default y if A=y && B_dummy > > where B_dummy is not used outside of Kconfig, and only A and B are the > symbols of interest (eg. to build the drivers). > That worked like a charm! Thanks a lot, -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/