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And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/chuguangqing/gpu-drm-fix-compilation-errors-in-drm_vram_helper/20250729-141222 base: linus/master patch link: https://lore.kernel.org/r/20250729060728.82402-1-chuguangqing%40inspur.com patch subject: [PATCH 1/1] gpu: drm: fix compilation errors in drm_vram_helper :::::: branch date: 16 hours ago :::::: commit date: 16 hours ago config: s390-randconfig-001-20250730 (https://download.01.org/0day-ci/archive/20250730/202507300646.kTchyjvh-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250730/202507300646.kTchyjvh-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/r/202507300646.kTchyjvh-lkp@intel.com/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: drivers/gpu/drm/drm_gem_ttm_helper: 'drm_gem_ttm_print_info' exported twice. Previous export was in vmlinux >> ERROR: modpost: drivers/gpu/drm/drm_gem_ttm_helper: 'drm_gem_ttm_vmap' exported twice. Previous export was in vmlinux >> ERROR: modpost: drivers/gpu/drm/drm_gem_ttm_helper: 'drm_gem_ttm_vunmap' exported twice. Previous export was in vmlinux >> ERROR: modpost: drivers/gpu/drm/drm_gem_ttm_helper: 'drm_gem_ttm_mmap' exported twice. Previous export was in vmlinux >> ERROR: modpost: drivers/gpu/drm/drm_gem_ttm_helper: 'drm_gem_ttm_dumb_map_offset' exported twice. Previous export was in vmlinux -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki