Hi Maxime, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on rockchip/for-next robh/for-next v5.7-rc7 next-20200529] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Maxime-Chevallier/media-rockchip-Introduce-driver-for-the-camera-interface-on-PX30/20200531-081952 base: git://linuxtv.org/media_tree.git master config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5) 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 # 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: kbuild test robot All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from drivers/media/platform/rockchip/cif/dev.c:22: >> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined] #define FRAME_END (0x01 << 0) ^ arch/x86/include/asm/frame.h:89:9: note: previous definition is here #define FRAME_END ^ >> drivers/media/platform/rockchip/cif/dev.c:253:13: warning: variable 'v4l2_dev' is uninitialized when used here [-Wuninitialized] v4l2_info(v4l2_dev, "No reserved memory region assign to CIFn"); ^~~~~~~~ include/media/v4l2-common.h:67:25: note: expanded from macro 'v4l2_info' v4l2_printk(KERN_INFO, dev, fmt , ## arg) ^~~ include/media/v4l2-common.h:58:28: note: expanded from macro 'v4l2_printk' printk(level "%s: " fmt, (dev)->name , ## arg) ^~~ drivers/media/platform/rockchip/cif/dev.c:216:30: note: initialize the variable 'v4l2_dev' to silence this warning struct v4l2_device *v4l2_dev; ^ = NULL 2 warnings generated. -- In file included from drivers/media/platform/rockchip/cif/capture.c:22: >> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined] #define FRAME_END (0x01 << 0) ^ arch/x86/include/asm/frame.h:89:9: note: previous definition is here #define FRAME_END ^ 1 warning generated. vim +/FRAME_END +113 drivers/media/platform/rockchip/cif/regs.h 110 111 /* CIF INTSTAT */ 112 #define INTSTAT_CLS (0x3FF) > 113 #define FRAME_END (0x01 << 0) 114 #define LINE_ERR (0x01 << 2) 115 #define PST_INF_FRAME_END (0x01 << 9) 116 #define FRAME_END_CLR (0x01 << 0) 117 #define LINE_ERR_CLR (0x01 << 2) 118 #define PST_INF_FRAME_END_CLR (0x01 << 9) 119 #define INTSTAT_ERR (0xFC) 120 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org