Hi Dave, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ecfa36cd4db3275bf3b6c6f32c7e3c6bb537de2 commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next date: 9 months ago config: powerpc64-randconfig-r025-20210613 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386) 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7 # 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 warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:24: In file included from include/linux/debugfs.h:15: In file included from include/linux/fs.h:6: In file included from include/linux/wait_bit.h:8: In file included from include/linux/wait.h:7: In file included from include/linux/list.h:9: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:29: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:309:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ static const struct file_operations amdgpu_rap_debugfs_ops = { ^ 2 warnings generated. -- In file included from drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:26: In file included from include/drm/drm_debugfs.h:36: In file included from include/linux/seq_file.h:7: In file included from include/linux/bug.h:5: In file included from arch/powerpc/include/asm/bug.h:109: In file included from include/asm-generic/bug.h:20: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:29: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:309:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ static const struct cg_flag_name clocks[] = { ^ 2 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HOTPLUG_PCI_POWERNV Depends on PCI && HOTPLUG_PCI && PPC_POWERNV && EEH Selected by - OCXL && PPC_POWERNV && PCI && EEH vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c a4322e1881bed8 Wenhui Sheng 2020-08-11 108 a4322e1881bed8 Wenhui Sheng 2020-08-11 @109 static const struct file_operations amdgpu_rap_debugfs_ops = { a4322e1881bed8 Wenhui Sheng 2020-08-11 110 .owner = THIS_MODULE, a4322e1881bed8 Wenhui Sheng 2020-08-11 111 .read = NULL, a4322e1881bed8 Wenhui Sheng 2020-08-11 112 .write = amdgpu_rap_debugfs_write, a4322e1881bed8 Wenhui Sheng 2020-08-11 113 .llseek = default_llseek a4322e1881bed8 Wenhui Sheng 2020-08-11 114 }; a4322e1881bed8 Wenhui Sheng 2020-08-11 115 :::::: The code at line 109 was first introduced by commit :::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test :::::: TO: Wenhui Sheng <Wenhui.Sheng(a)amd.com&gt; :::::: CC: Alex Deucher <alexander.deucher(a)amd.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org