From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 17 Nov 2020 19:28:45 +0100 From: Heiko Carstens Subject: Re: irq-loongson-pch-pic.c:undefined reference to `of_iomap' Message-ID: <20201117182845.GB4746@osiris> References: <202011140757.5QyVghe2-lkp@intel.com> <4f6f2244-033c-8413-818d-0b9c1b0b33ae@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: List-ID: To: Arnd Bergmann Cc: Geert Uytterhoeven , Randy Dunlap , kernel test robot , Jiaxun Yang , kbuild-all@lists.01.org, "linux-kernel@vger.kernel.org" , Marc Zyngier , Arnd Bergmann , linux-s390 , Vasily Gorbik , Christian Borntraeger On Mon, Nov 16, 2020 at 10:21:26AM +0100, Arnd Bergmann wrote: > > Don't we need the dependencies on HAS_IOMEM for the CONFIG_UML=y > > case, too? > > I would have expected that as well, but I don't see the problem when building > an arch/um kernel, all I get is > > ERROR: modpost: "devm_platform_ioremap_resource" > [drivers/iio/adc/adi-axi-adc.ko] undefined! > ERROR: modpost: "devm_platform_ioremap_resource" > [drivers/ptp/ptp_ines.ko] undefined! > ERROR: modpost: "devm_ioremap_resource" > [drivers/net/ethernet/xilinx/xilinx_emac.ko] undefined! > ERROR: modpost: "devm_platform_ioremap_resource_byname" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "devm_ioremap" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "devm_of_iomap" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "__open64_2" [fs/hostfs/hostfs.ko] undefined! > > If I disable those five drivers, I can build and link a uml kernel without > warnings. I could not find the difference compared to s390 here. > > Looking a bit further, I now find that we ended up disabling CONFIG_COMPILE_TEST > entirely for arch/um, which is clearly an option that would also work for s390. I'll add a patch to the s390 tree which disables CONFIG_COMPILE_TEST for s390. I wouldn't like to start again chasing/adding missing 'select' or 'depends on' statements in various config files. From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============3534092069753325588==" MIME-Version: 1.0 From: Heiko Carstens To: kbuild-all@lists.01.org Subject: Re: irq-loongson-pch-pic.c:undefined reference to `of_iomap' Date: Tue, 17 Nov 2020 19:28:45 +0100 Message-ID: <20201117182845.GB4746@osiris> In-Reply-To: List-Id: --===============3534092069753325588== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Mon, Nov 16, 2020 at 10:21:26AM +0100, Arnd Bergmann wrote: > > Don't we need the dependencies on HAS_IOMEM for the CONFIG_UML=3Dy > > case, too? > = > I would have expected that as well, but I don't see the problem when buil= ding > an arch/um kernel, all I get is > = > ERROR: modpost: "devm_platform_ioremap_resource" > [drivers/iio/adc/adi-axi-adc.ko] undefined! > ERROR: modpost: "devm_platform_ioremap_resource" > [drivers/ptp/ptp_ines.ko] undefined! > ERROR: modpost: "devm_ioremap_resource" > [drivers/net/ethernet/xilinx/xilinx_emac.ko] undefined! > ERROR: modpost: "devm_platform_ioremap_resource_byname" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "devm_ioremap" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "devm_of_iomap" > [drivers/net/ethernet/xilinx/ll_temac.ko] undefined! > ERROR: modpost: "__open64_2" [fs/hostfs/hostfs.ko] undefined! > = > If I disable those five drivers, I can build and link a uml kernel without > warnings. I could not find the difference compared to s390 here. > = > Looking a bit further, I now find that we ended up disabling CONFIG_COMPI= LE_TEST > entirely for arch/um, which is clearly an option that would also work for= s390. I'll add a patch to the s390 tree which disables CONFIG_COMPILE_TEST for s390. I wouldn't like to start again chasing/adding missing 'select' or 'depends on' statements in various config files. --===============3534092069753325588==--