tree: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git apple/m1-main head: 7d2d16ccf15d8eb84accfaf44a0b324f36e39588 commit: b10eb2d50911f98a8f1cacf00b1b677339593f4c [13/20] asm-generic/io.h: implement pci_remap_cfgspace using ioremap_np config: powerpc64-randconfig-r021-20210408 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project dd453a1389b6a7e6d9214b449d3c54981b1a89b6) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/commit/?id=b1... git remote add soc https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git git fetch --no-tags soc apple/m1-main git checkout b10eb2d50911f98a8f1cacf00b1b677339593f4c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from arch/powerpc/kernel/asm-offsets.c:23: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: return ioremap_np(offset, size) ?: ioremap(offset, size); ^ return ioremap_np(offset, size) ?: ioremap(offset, size); ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. -- In file included from arch/powerpc/kernel/asm-offsets.c:23: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: return ioremap_np(offset, size) ?: ioremap(offset, size); ^ return ioremap_np(offset, size) ?: ioremap(offset, size); ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. make[2]: *** [scripts/Makefile.build:116: arch/powerpc/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1235: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/ioremap_np +98 include/linux/io.h 81 82 #ifdef CONFIG_PCI 83 /* 84 * The PCI specifications (Rev 3.0, 3.2.5 "Transaction Ordering and 85 * Posting") mandate non-posted configuration transactions. This default 86 * implementation attempts to use the ioremap_np() API to provide this 87 * on arches that support it, and falls back to ioremap() on those that 88 * don't. Overriding this function is deprecated; arches that properly 89 * support non-posted accesses should implement ioremap_np() instead, which 90 * this default implementation can then use to return mappings compliant with 91 * the PCI specification. 92 */ 93 #ifndef pci_remap_cfgspace 94 #define pci_remap_cfgspace pci_remap_cfgspace 95 static inline void __iomem *pci_remap_cfgspace(phys_addr_t offset, 96 size_t size) 97 { 99 } 100 #endif 101 #endif 102 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org