tree: https://github.com/afaerber/linux.git rtd1295-next head: 2b4c035e7d0c06b94da3923e8f0a716fad4632a8 commit: c6a7688b76acdb43f118b868f926ba91e0635ccb [42/117] soc: realtek: Add SCPU wrapper for RTD1295 config: um-x86_64_defconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-14) 7.4.0 reproduce: git checkout c6a7688b76acdb43f118b868f926ba91e0635ccb # save the attached .config to linux build tree make ARCH=um SUBARCH=x86_64 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 >>): /usr/bin/ld: drivers/soc/realtek/scpu.o: in function `rtd119x_scpu_probe': collect2: error: ld returned 1 exit status --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation