Hi chenchangcheng, kernel test robot noticed the following build errors: [auto build test ERROR on linuxtv-media-stage/master] [also build test ERROR on linus/master v6.12-rc6 next-20241101] [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/chenchangcheng/media-uvcvideo-Create-input-device-for-all-uvc-devices-with-status-endpoints/20241104-104225 base: https://git.linuxtv.org/media_stage.git master patch link: https://lore.kernel.org/r/20241104023947.826707-1-ccc194101%40163.com patch subject: [PATCH] media: uvcvideo:Create input device for all uvc devices with status endpoints. config: x86_64-buildonly-randconfig-001-20241104 (https://download.01.org/0day-ci/archive/20241104/202411041605.VSoO1uus-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241104/202411041605.VSoO1uus-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411041605.VSoO1uus-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/media/usb/uvc/uvc_status.c: In function 'uvc_event_streaming': >> drivers/media/usb/uvc/uvc_status.c:110:21: error: implicit declaration of function 'uvc_input_has_button' [-Werror=implicit-function-declaration] 110 | if (uvc_input_has_button(dev)) { | ^~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/uvc_input_has_button +110 drivers/media/usb/uvc/uvc_status.c 93 94 /* -------------------------------------------------------------------------- 95 * Status interrupt endpoint 96 */ 97 static void uvc_event_streaming(struct uvc_device *dev, 98 struct uvc_status *status, int len) 99 { 100 if (len <= offsetof(struct uvc_status, bEvent)) { 101 uvc_dbg(dev, STATUS, 102 "Invalid streaming status event received\n"); 103 return; 104 } 105 106 if (status->bEvent == 0) { 107 if (len <= offsetof(struct uvc_status, streaming)) 108 return; 109 > 110 if (uvc_input_has_button(dev)) { 111 uvc_dbg(dev, STATUS, "Button (intf %u) %s len %d\n", 112 status->bOriginator, 113 status->streaming.button ? "pressed" : "released", len); 114 uvc_input_report_key(dev, KEY_CAMERA, status->streaming.button); 115 } 116 } else { 117 uvc_dbg(dev, STATUS, "Stream %u error event %02x len %d\n", 118 status->bOriginator, status->bEvent, len); 119 } 120 } 121 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki