Hi Dongcheng, kernel test robot noticed the following build errors: [auto build test ERROR on 2f87d0916ce0d2925cedbc9e8f5d6291ba2ac7b2] url: https://github.com/intel-lab-lkp/linux/commits/Dongcheng-Yan/media-i2c-add-lt6911uxe-hdmi-bridge-driver/20250210-141140 base: 2f87d0916ce0d2925cedbc9e8f5d6291ba2ac7b2 patch link: https://lore.kernel.org/r/20250210060923.2434047-1-dongcheng.yan%40intel.com patch subject: [PATCH v5] media: i2c: add lt6911uxe hdmi bridge driver config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20250210/202502102128.fEu1NOLZ-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/20250210/202502102128.fEu1NOLZ-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/202502102128.fEu1NOLZ-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): drivers/media/i2c/lt6911uxe.c: In function 'lt6911uxe_get_mbus_config': >> drivers/media/i2c/lt6911uxe.c:444:12: error: 'struct v4l2_mbus_config' has no member named 'link_freq' 444 | cfg->link_freq = lt6911uxe->cur_mode.link_freq; | ^~ drivers/media/i2c/lt6911uxe.c: At top level: >> drivers/media/i2c/lt6911uxe.c:106:32: warning: 'lt6911uxe_ev_stream_end' defined but not used [-Wunused-const-variable=] 106 | static const struct v4l2_event lt6911uxe_ev_stream_end = { | ^~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [m]: - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m] vim +444 drivers/media/i2c/lt6911uxe.c 434 435 static int lt6911uxe_get_mbus_config(struct v4l2_subdev *sd, 436 unsigned int pad, 437 struct v4l2_mbus_config *cfg) 438 { 439 struct lt6911uxe *lt6911uxe = to_lt6911uxe(sd); 440 struct v4l2_subdev_state *state; 441 442 state = v4l2_subdev_lock_and_get_active_state(sd); 443 cfg->type = V4L2_MBUS_CSI2_DPHY; > 444 cfg->link_freq = lt6911uxe->cur_mode.link_freq; 445 v4l2_subdev_unlock_state(state); 446 447 return 0; 448 } 449 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki