Hi Bartosz, FYI, the error/warning still remains. tree: https://github.com/omap-audio/linux-audio peter/ti-linux-4.19.y/wip head: 43b20466ec6976ba9f08c94c68b2d74ac5ef838d commit: 7a3c8cd45fa7fe4cfd6ed766f4fc8530fa006c4d [7351/9541] drivers: provide devm_platform_ioremap_resource() config: um-x86_64_defconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-13) 7.4.0 reproduce: git checkout 7a3c8cd45fa7fe4cfd6ed766f4fc8530fa006c4d # 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/base/platform.o: in function `devm_platform_ioremap_resource': 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