Hi Mauro, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ed710da2873c2aeb3bb805864a699affaf1d03b commit: f4104b7851a8d8b9a70899dcbecdb393eb16cd8a media: platform: rename s5p-jpeg/ to samsung/s5p-jpeg/ date: 9 months ago config: hexagon-randconfig-r004-20221207 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 6e4cea55f0d1104408b26ac574566a0e4de48036) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4104b7851a8d8b9a70899dcbecdb393eb16cd8a git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f4104b7851a8d8b9a70899dcbecdb393eb16cd8a # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/media/platform/samsung/s5p-jpeg/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/media/platform/samsung/s5p-jpeg/jpeg-core.c:3126:34: warning: unused variable 'samsung_jpeg_match' [-Wunused-const-variable] static const struct of_device_id samsung_jpeg_match[] = { ^ 1 warning generated. vim +/samsung_jpeg_match +3126 drivers/media/platform/samsung/s5p-jpeg/jpeg-core.c 6c96dbbc2aa9f5b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-09-18 3125 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 @3126 static const struct of_device_id samsung_jpeg_match[] = { 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3127 { 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3128 .compatible = "samsung,s5pv210-jpeg", 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3129 .data = &s5p_jpeg_drvdata, 3246fdaa0ac2d93 drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2014-07-11 3130 }, { 3246fdaa0ac2d93 drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2014-07-11 3131 .compatible = "samsung,exynos3250-jpeg", 3246fdaa0ac2d93 drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2014-07-11 3132 .data = &exynos3250_jpeg_drvdata, 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3133 }, { 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3134 .compatible = "samsung,exynos4210-jpeg", 3246fdaa0ac2d93 drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2014-07-11 3135 .data = &exynos4_jpeg_drvdata, 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3136 }, { 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3137 .compatible = "samsung,exynos4212-jpeg", 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3138 .data = &exynos4_jpeg_drvdata, 7c15fd4bf3d367b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-03-09 3139 }, { 7c15fd4bf3d367b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-03-09 3140 .compatible = "samsung,exynos5420-jpeg", 7c15fd4bf3d367b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-03-09 3141 .data = &exynos5420_jpeg_drvdata, 6c96dbbc2aa9f5b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-09-18 3142 }, { 6c96dbbc2aa9f5b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-09-18 3143 .compatible = "samsung,exynos5433-jpeg", 6c96dbbc2aa9f5b drivers/media/platform/s5p-jpeg/jpeg-core.c Andrzej Pietrasiewicz 2015-09-18 3144 .data = &exynos5433_jpeg_drvdata, 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3145 }, 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3146 {}, 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3147 }; 80529ae5c13725e drivers/media/platform/s5p-jpeg/jpeg-core.c Jacek Anaszewski 2013-12-18 3148 :::::: The code at line 3126 was first introduced by commit :::::: 80529ae5c13725e12ba0377e29b2160794ba6b25 [media] s5p-jpeg: JPEG codec :::::: TO: Jacek Anaszewski :::::: CC: Mauro Carvalho Chehab -- 0-DAY CI Kernel Test Service https://01.org/lkp