From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from agminet01.oracle.com ([141.146.126.228]:62818 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752912AbYIWVFK (ORCPT ); Tue, 23 Sep 2008 17:05:10 -0400 Date: Tue, 23 Sep 2008 14:03:09 -0700 From: Randy Dunlap To: Ivo van Doorn Cc: linux-wireless@vger.kernel.org, rt2400-devel@lists.sourceforge.net, linville@tuxdriver.com, akpm Subject: Re: [PATCH -mm] rt2x00: fix Kconfig dependencies Message-Id: <20080923140309.ecf8d030.randy.dunlap@oracle.com> (sfid-20080923_230522_783483_AA71B7DB) In-Reply-To: <200809231951.00872.IvDoorn@gmail.com> References: <48D82A43.7040604@oracle.com> <200809230907.46130.IvDoorn@gmail.com> <48D9188A.2090003@oracle.com> <200809231951.00872.IvDoorn@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, 23 Sep 2008 19:51:00 +0200 Ivo van Doorn wrote: > On Tuesday 23 September 2008, Randy Dunlap wrote: > > Ivo van Doorn wrote: > > > On Tuesday 23 September 2008, Randy Dunlap wrote: > > >> From: Randy Dunlap > > >> > > >> If RT2X00=y but RFKILL=m, these build errors happen: > > >> > > >> (.text+0x7c7d6): undefined reference to `rfkill_free' > > >> rt2x00rfkill.c:(.text+0x7c830): undefined reference to `rfkill_force_state' > > >> (.text+0x7c88d): undefined reference to `rfkill_unregister' > > >> (.text+0x7c8cd): undefined reference to `rfkill_register' > > >> (.text+0x7ca1a): undefined reference to `rfkill_allocate' > > >> > > >> so restrict RT2X00's RFKILL config level to that of the main RFKILL option. > > >> This is done by making the former a tristate instead of a bool > > >> config option. > > >> > > >> > > >> If RT2X00=y but LEDS_CLASS=m, these build errors happen: > > >> > > >> (.text+0x11859f): undefined reference to `led_classdev_resume' > > >> (.text+0x1185b3): undefined reference to `led_classdev_resume' > > >> (.text+0x1185c7): undefined reference to `led_classdev_resume' > > >> (.text+0x1185e4): undefined reference to `led_classdev_suspend' > > >> (.text+0x1185f8): undefined reference to `led_classdev_suspend' > > >> (.text+0x11860c): undefined reference to `led_classdev_suspend' > > >> rt2x00leds.c:(.text+0x118620): undefined reference to `led_classdev_unregister' > > >> rt2x00leds.c:(.text+0x118695): undefined reference to `led_classdev_register' > > >> > > >> so restrict RT2X00's LEDS config level to that of the main LEDS_CLASS option. > > >> This is done by making the former a tristate instead of a bool > > >> config option. > > > > > > Is that really going to work correctly? > > > rfkill and leds support should be compiled into rt2x00lib.ko, which means that > > > should become a module instead of the rfkill/leds support part only. > > > > I wondered about that lib.ko. Any working build fix is OK with me. > > What do you suggest? > > Actually I was hoping that you answer to my question was going to be "yes it will be working correctly" ;) > > Would this work? > > config RT2X00_LIB_RFKILL > tristate > depends on RFKILL > default y > > config RT2X00_LIB_LEDS > tristate > depends on NEW_LEDS > depends on LEDS_CLASS > default y > > config RT2X00_LIB > tristate > depends on RT2X00_LIB_RFKILL if (RT2X00_LIB_RFKILL != n) > depends on RT2X00_LIB_LEDS if (RT2X00_LIB_LEDS != n) > > It's ugly, and I can't test this right now, but perhaps you have an idea if this could do the trick? I tried it: drivers/net/wireless/rt2x00/Kconfig:22: invalid option drivers/net/wireless/rt2x00/Kconfig:23: invalid option "depends ... if ..." is invalid. Would be nice to have that. Maybe there is some other way to express that... > > Currently kconfig is converting an =m to =y because of tristate -> boolean. > > This is not good. It breaks things, as demonstrated here. > > The Kconfig cannot stay like this AFAIK. > > Agreed. --- ~Randy