Hi Wentong, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on media-tree/master] [also build test WARNING on rafael-pm/linux-next sailus-media-tree/streams linus/master v6.3-rc4 next-20230328] [If your patch is applied to the wrong git tree, kindly drop us a note. 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/Wentong-Wu/media-pci-intel-ivsc-Add-CSI-submodule/20230327-142435 base: git://linuxtv.org/media_tree.git master patch link: https://lore.kernel.org/r/1679898188-14426-2-git-send-email-wentong.wu%40intel.com patch subject: [PATCH v3 1/3] media: pci: intel: ivsc: Add CSI submodule config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20230328/202303282158.PaVVxGIS-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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://github.com/intel-lab-lkp/linux/commit/413726a06ca6f775b34425ed81e996b9b7237d31 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Wentong-Wu/media-pci-intel-ivsc-Add-CSI-submodule/20230327-142435 git checkout 413726a06ca6f775b34425ed81e996b9b7237d31 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/media/i2c/ drivers/media/pci/intel/ivsc/ drivers/net/usb/ net/netfilter/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303282158.PaVVxGIS-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/media/pci/intel/ivsc/csi_bridge.c:179:2: error: implicit declaration of function 'software_node_unregister_nodes' is invalid in C99 [-Werror,-Wimplicit-function-declaration] software_node_unregister_nodes(sensor->swnodes); ^ drivers/media/pci/intel/ivsc/csi_bridge.c:231:8: error: implicit declaration of function 'software_node_register_nodes' is invalid in C99 [-Werror,-Wimplicit-function-declaration] ret = software_node_register_nodes(sensor->swnodes); ^ drivers/media/pci/intel/ivsc/csi_bridge.c:249:2: error: implicit declaration of function 'software_node_unregister_nodes' is invalid in C99 [-Werror,-Wimplicit-function-declaration] software_node_unregister_nodes(sensor->swnodes); ^ >> drivers/media/pci/intel/ivsc/csi_bridge.c:284:5: warning: no previous prototype for function 'csi_bridge_init' [-Wmissing-prototypes] int csi_bridge_init(struct mei_cl_device *csi_dev) ^ drivers/media/pci/intel/ivsc/csi_bridge.c:284:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int csi_bridge_init(struct mei_cl_device *csi_dev) ^ static 1 warning and 3 errors generated. vim +/csi_bridge_init +284 drivers/media/pci/intel/ivsc/csi_bridge.c 283 > 284 int csi_bridge_init(struct mei_cl_device *csi_dev) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
