Hi Dmitry, I love your patch! Yet something to improve: [auto build test ERROR on tegra/for-next] [also build test ERROR on clk/clk-next next-20200605] [cannot apply to robh/for-next tegra-drm/drm/tegra/for-next linus/master v5.7] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/Introduce-memory... base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): aarch64-linux-ld: drivers/memory/tegra/mc.o: in function `icc_node_destroy': aarch64-linux-ld: drivers/memory/tegra/mc.o: in function `icc_link_destroy': aarch64-linux-ld: drivers/memory/tegra/mc.o: in function `icc_node_add': aarch64-linux-ld: drivers/memory/tegra/mc.o: in function `icc_node_del': aarch64-linux-ld: drivers/memory/tegra/tegra124.o: in function `icc_node_destroy': tegra124.c:(.text+0x0): multiple definition of `icc_node_destroy'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1500): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra124.o: in function `icc_link_destroy': tegra124.c:(.text+0x10): multiple definition of `icc_link_destroy'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1510): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra124.o: in function `icc_node_add': tegra124.c:(.text+0x20): multiple definition of `icc_node_add'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1520): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra124.o: in function `icc_node_del': tegra124.c:(.text+0x30): multiple definition of `icc_node_del'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1530): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra210.o: in function `icc_node_destroy': tegra210.c:(.text+0x0): multiple definition of `icc_node_destroy'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1500): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra210.o: in function `icc_link_destroy': tegra210.c:(.text+0x10): multiple definition of `icc_link_destroy'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1510): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra210.o: in function `icc_node_add': tegra210.c:(.text+0x20): multiple definition of `icc_node_add'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1520): first defined here aarch64-linux-ld: drivers/memory/tegra/tegra210.o: in function `icc_node_del': tegra210.c:(.text+0x30): multiple definition of `icc_node_del'; drivers/iommu/tegra-smmu.o:tegra-smmu.c:(.text+0x1530): first defined here --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org