tree: git://git.kernel.org/pub/scm/linux/kernel/git/lkundrak/linux-mmp.git lr/ariel head: 24ec55bb8323514fe97fc1335b6bc6a9a36cd48d commit: b8f842af659e5ef9c7132effce2a041fdd589e01 [37/38] xrefresh config: x86_64-randconfig-a006-20200809 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0b90a08f7722980f6074c6eada8022242408cdb4) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout b8f842af659e5ef9c7132effce2a041fdd589e01 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): static const struct drm_display_mode innolux_n116bge_mode = { ^ 1 warning generated. vim +/innolux_n116bge_mode +2146 drivers/gpu/drm/panel/panel-simple.c fe0da14debcba4 Lubomir Rintel 2018-12-13 2145 fe0da14debcba4 Lubomir Rintel 2018-12-13 @2146 static const struct drm_display_mode innolux_n116bge_mode = { fe0da14debcba4 Lubomir Rintel 2018-12-13 2147 .clock = 76420, fe0da14debcba4 Lubomir Rintel 2018-12-13 2148 .hdisplay = 1366, fe0da14debcba4 Lubomir Rintel 2018-12-13 2149 .hsync_start = 1366 + 136, fe0da14debcba4 Lubomir Rintel 2018-12-13 2150 .hsync_end = 1366 + 136 + 30, fe0da14debcba4 Lubomir Rintel 2018-12-13 2151 .htotal = 1366 + 136 + 30 + 60, fe0da14debcba4 Lubomir Rintel 2018-12-13 2152 .vdisplay = 768, fe0da14debcba4 Lubomir Rintel 2018-12-13 2153 .vsync_start = 768 + 8, fe0da14debcba4 Lubomir Rintel 2018-12-13 2154 .vsync_end = 768 + 8 + 12, fe0da14debcba4 Lubomir Rintel 2018-12-13 2155 .vtotal = 768 + 8 + 12 + 12, fe0da14debcba4 Lubomir Rintel 2018-12-13 2156 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, fe0da14debcba4 Lubomir Rintel 2018-12-13 2157 }; fe0da14debcba4 Lubomir Rintel 2018-12-13 2158 :::::: The code at line 2146 was first introduced by commit :::::: fe0da14debcba4855471901ea88fb26fcf0590ac drm/panel: simple: Add support for Innolux LS075AT011 :::::: TO: Lubomir Rintel <lkundrak(a)v3.sk&gt; :::::: CC: Lubomir Rintel <lkundrak(a)v3.sk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org