tree: git://linuxtv.org/hverkuil/media_tree.git zoran head: 7ce0d221dbb77d82ce789984dcee1fcc27d8f8f0 commit: 118658ed37664dddbc8c0cd8006edc160528b6f7 [37/59] media: staging: max96712: Add basic support for MAX96712 GMSL2 deserializer config: csky-buildonly-randconfig-r005-20211104 (attached as .config) compiler: csky-linux-gcc (GCC) 11.2.0 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 git remote add hverkuil-media-tree git://linuxtv.org/hverkuil/media_tree.git git fetch --no-tags hverkuil-media-tree zoran git checkout 118658ed37664dddbc8c0cd8006edc160528b6f7 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=csky SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): csky-linux-ld: drivers/staging/media/max96712/max96712.o: in function `max96712_remove': max96712.c:(.text+0x2e): undefined reference to `v4l2_async_unregister_subdev' >> csky-linux-ld: max96712.c:(.text+0x40): undefined reference to `v4l2_async_unregister_subdev' csky-linux-ld: drivers/staging/media/max96712/max96712.o: in function `max96712_probe': max96712.c:(.text+0x144): undefined reference to `v4l2_fwnode_endpoint_parse' >> csky-linux-ld: max96712.c:(.text+0x2a8): undefined reference to `v4l2_fwnode_endpoint_parse' >> csky-linux-ld: max96712.c:(.text+0x3a2): undefined reference to `v4l2_ctrl_handler_init_class' >> csky-linux-ld: max96712.c:(.text+0x3d4): undefined reference to `v4l2_ctrl_new_std' >> csky-linux-ld: max96712.c:(.text+0x3f0): undefined reference to `v4l2_ctrl_new_std_menu_items' >> csky-linux-ld: max96712.c:(.text+0x422): undefined reference to `v4l2_async_register_subdev' >> csky-linux-ld: max96712.c:(.text+0x43a): undefined reference to `v4l2_ctrl_handler_free' csky-linux-ld: max96712.c:(.text+0x480): undefined reference to `v4l2_ctrl_handler_init_class' csky-linux-ld: max96712.c:(.text+0x488): undefined reference to `v4l2_ctrl_new_std' csky-linux-ld: max96712.c:(.text+0x494): undefined reference to `v4l2_ctrl_new_std_menu_items' csky-linux-ld: max96712.c:(.text+0x49c): undefined reference to `v4l2_async_register_subdev' csky-linux-ld: max96712.c:(.text+0x4a4): undefined reference to `v4l2_ctrl_handler_free' Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for VIDEO_V4L2_SUBDEV_API Depends on MEDIA_SUPPORT && VIDEO_DEV && MEDIA_CONTROLLER Selected by - VIDEO_MAX96712 && STAGING && STAGING_MEDIA && MEDIA_SUPPORT && I2C && OF_GPIO --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org