On 9/29/19 12:35 AM, kbuild test robot wrote: > Hi Andrew, > > It's probably a bug fix that unveils the link errors. > > tree: git://git.cmpxchg.org/linux-mmotm.git master > head: 89331b857195aa00660fb19f1383924e95f7709e > commit: d9cc9c2bd830a180cc8ac762a739fcfd3fc6c330 [236/260] linux-next-git-rejects > config: sparc-allyesconfig (attached as .config) > compiler: sparc64-linux-gcc (GCC) 7.4.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout d9cc9c2bd830a180cc8ac762a739fcfd3fc6c330 > # save the attached .config to linux build tree > GCC_VERSION=7.4.0 make.cross ARCH=sparc > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp(a)intel.com&gt; > > All errors (new ones prefixed by >>): > > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > drivers/mmc/host/sdhci-of-aspeed.o: In function `aspeed_sdc_probe': >>> sdhci-of-aspeed.c:(.text+0xf8): undefined reference to `of_platform_device_create' I don't see how this last build error could happen with mmotm-2019-09-25-18-10 (latest ATM) since it contains this patch: commit 72976643aef55a2a3eec85e5342a3c3608f66e64 Author: Andrew Jeffery <andrew(a)aj.id.au&gt; Date: Wed Sep 4 11:51:20 2019 +0930 mmc: sdhci-of-aspeed: Depend on CONFIG_OF_ADDRESS Resolves the following build error reported by the 0-day bot: ERROR: "of_platform_device_create" [drivers/mmc/host/sdhci-of-aspeed.ko] undefined! SPARC does not set CONFIG_OF_ADDRESS so the symbol is missing. Depend on CONFIG_OF_ADDRESS to ensure the driver is only built for supported configurations. Fixes: 2d28dbe042f4 ("mmc: sdhci-of-aspeed: Add support for the ASPEED SD controller") Reported-by: kbuild test robot <lkp(a)intel.com&gt; Signed-off-by: Andrew Jeffery <andrew(a)aj.id.au&gt; Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org&gt; I cannot reproduce this problem with mmotm latest.