Hi Damon, kernel test robot noticed the following build errors: [auto build test ERROR on drm-exynos/exynos-drm-next] [also build test ERROR on rockchip/for-next linus/master v6.17-rc1 next-20250815] [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/Damon-Ding/drm-bridge-analogix_dp-Formalize-the-struct-analogix_dp_device/20250814-185009 base: https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next patch link: https://lore.kernel.org/r/20250814104753.195255-9-damon.ding%40rock-chips.com patch subject: [PATCH v4 08/13] drm/bridge: analogix_dp: Add new API analogix_dp_finish_probe() config: x86_64-randconfig-001-20250816 (https://download.01.org/0day-ci/archive/20250816/202508160857.yC3oMucJ-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250816/202508160857.yC3oMucJ-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/202508160857.yC3oMucJ-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: vmlinux.o: in function `analogix_dp_finish_probe': >> drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1700: undefined reference to `devm_of_dp_aux_populate_bus' vim +1700 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c 1695 1696 int analogix_dp_finish_probe(struct analogix_dp_device *dp) 1697 { 1698 int ret; 1699 > 1700 ret = devm_of_dp_aux_populate_bus(&dp->aux, analogix_dp_aux_done_probing); 1701 if (ret) { 1702 /* 1703 * If devm_of_dp_aux_populate_bus() returns -ENODEV, the done_probing() will 1704 * not be called because there are no EP devices. Then the callback function 1705 * analogix_dp_aux_done_probing() will be called directly in order to support 1706 * the other valid DT configurations. 1707 * 1708 * NOTE: The devm_of_dp_aux_populate_bus() is allowed to return -EPROBE_DEFER. 1709 */ 1710 if (ret != -ENODEV) { 1711 dev_err(dp->dev, "failed to populate aux bus\n"); 1712 return ret; 1713 } 1714 1715 return analogix_dp_aux_done_probing(&dp->aux); 1716 } 1717 1718 return 0; 1719 } 1720 EXPORT_SYMBOL_GPL(analogix_dp_finish_probe); 1721 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
