Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753502AbZDVDAX (ORCPT ); Tue, 21 Apr 2009 23:00:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752435AbZDVDAG (ORCPT ); Tue, 21 Apr 2009 23:00:06 -0400 Received: from rcsinet11.oracle.com ([148.87.113.123]:52867 "EHLO rgminet11.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751260AbZDVDAE (ORCPT ); Tue, 21 Apr 2009 23:00:04 -0400 Message-ID: <49EE8855.1080306@oracle.com> Date: Tue, 21 Apr 2009 20:00:37 -0700 From: Randy Dunlap Organization: Oracle Linux Engineering User-Agent: Thunderbird 2.0.0.6 (X11/20070801) MIME-Version: 1.0 To: David Brownell CC: Kumar Gala , subrata@linux.vnet.ibm.com, linux-usb@vger.kernel.org, Linuxppc-dev , Stephen Rothwell , linux-next , sachinp , linux-kernel , Alexander Beregalov , samr Subject: Re: [BUILD FAILURE 11/12] Next April 21 : PPC64 randconfig [drivers/usb/host/ohci-hcd.o] References: <1240340081.9110.144.camel@subratamodak.linux.ibm.com> <5A202317-5104-4784-845B-B8C46E0A3C48@kernel.crashing.org> <49EE4341.50701@oracle.com> <200904211919.38104.david-b@pacbell.net> In-Reply-To: <200904211919.38104.david-b@pacbell.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: acsmt705.oracle.com [141.146.40.83] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A010201.49EE881D.003F:SCFMA4539814,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1210 Lines: 34 David Brownell wrote: > On Tuesday 21 April 2009, Randy Dunlap wrote: >>> Since its feasible to say 'n' to both we get the compile error. How do >>> we enforce having at least one set? >> Looks like using "choice" without "optional" would do it. >> See Documentation/kbuild/kconfig-language.txt and various examples >> in Kconfig* files. > > That won't quite work ... "at least one" includes "two" > (i.e. a PCI card in little-endian, a native controller > in big-endian). Real-world systems need such configs, > or so I'm told, and that's why their supported. Yes, I see. > Is there maybe a way to force Kconfig to just reject > such illegal configs -- neither option set -- rather > than trying some how to fix it? Not that I know of. cc-ing Sam. > Or maybe ... if neither one is set, have the header > force both on, and issue a warning. That should be doable. We'd prefer to catch it via Kconfig, but that doesn't look promising just now. -- ~Randy -- 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/