tree: https://github.com/0day-ci/linux/commits/UPDATE-20210116-031938/Ezequiel-... head: c752661bf6a21030f30dc4fc93b895e68dc23fcd commit: c752661bf6a21030f30dc4fc93b895e68dc23fcd media: v4l2-async: Add waiting subdevices debugfs date: 2 hours ago config: i386-randconfig-r013-20210115 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/c752661bf6a21030f30dc4fc93b895e68... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20210116-031938/Ezequiel-Garcia/media-v4l2-async-Remove-V4L2_ASYNC_MATCH_CUSTOM/20210109-012059 git checkout c752661bf6a21030f30dc4fc93b895e68dc23fcd # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): drivers/media/v4l2-core/v4l2-async.c: In function 'print_waiting_subdev': drivers/media/v4l2-core/v4l2-async.c:846:2: warning: enumeration value 'V4L2_ASYNC_MATCH_CUSTOM' not handled in switch [-Wswitch] 846 | switch (asd->match_type) { | ^~~~~~ vim +/V4L2_ASYNC_MATCH_DEVNAME +846 drivers/media/v4l2-core/v4l2-async.c 842 843 static void print_waiting_subdev(struct seq_file *s, 844 struct v4l2_async_subdev *asd) 845 { 847 case V4L2_ASYNC_MATCH_I2C: 848 seq_printf(s, " [i2c] dev=%d-%04x\n", asd->match.i2c.adapter_id, 849 asd->match.i2c.address); 850 break; 851 case V4L2_ASYNC_MATCH_FWNODE: { 852 struct fwnode_handle *devnode, *fwnode = asd->match.fwnode; 853 854 devnode = fwnode_graph_is_endpoint(fwnode) ? 855 fwnode_graph_get_port_parent(fwnode) : 856 fwnode_handle_get(fwnode); 857 858 seq_printf(s, " [fwnode] dev=%s, node=%pfw\n", 859 devnode->dev ? dev_name(devnode->dev) : "nil", 860 fwnode); 861 862 fwnode_handle_put(devnode); 863 break; 864 } 865 } 866 } 867 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org