From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Yann E. MORIN" Subject: Re: Splitting stk1160-ac97 as a module (Re: linux-next: Tree for May 1 (media/usb/stk1160)) Date: Sat, 4 May 2013 21:59:50 +0200 Message-ID: <20130504195950.GA3254@free.fr> References: <20130501183734.7ad1efca2d06e75432edabbd@canb.auug.org.au> <518157EB.3010700@infradead.org> <51827DB1.7000304@redhat.com> <20130504172142.GA21656@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20130504172142.GA21656@localhost> Sender: linux-kbuild-owner@vger.kernel.org To: Ezequiel Garcia Cc: Mauro Carvalho Chehab , Randy Dunlap , Ezequiel =?iso-8859-1?Q?Garc=EDa?= , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media , linux-kbuild@vger.kernel.org List-Id: linux-next.vger.kernel.org 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). Otherwise, I was not able to get the desired behviour with only the A and B symbols. Regards, Yann E. MORIN. -- .-----------------.--------------------.------------------.--------------------. | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: | | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ | | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no | | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. | '------------------------------^-------^------------------^--------------------'