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charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250617-ov9282-flash-strobe-v5-9-9762da74d065@linux.dev> Hi Richard, kernel test robot noticed the following build errors: [auto build test ERROR on d9946fe286439c2aeaa7953b8c316efe5b83d515] url: https://github.com/intel-lab-lkp/linux/commits/Richard-Leitner/media-v4l-ctrls-add-a-control-for-flash-strobe-duration/20250617-153657 base: d9946fe286439c2aeaa7953b8c316efe5b83d515 patch link: https://lore.kernel.org/r/20250617-ov9282-flash-strobe-v5-9-9762da74d065%40linux.dev patch subject: [PATCH v5 09/10] media: i2c: ov9282: implement try_ctrl for strobe_duration config: i386-randconfig-051-20250618 (https://download.01.org/0day-ci/archive/20250618/202506182043.reVJKofN-lkp@intel.com/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/20250618/202506182043.reVJKofN-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202506182043.reVJKofN-lkp@intel.com/ All errors (new ones prefixed by >>): ld: drivers/media/i2c/ov9282.o: in function `ov9282_flash_duration_to_us': >> drivers/media/i2c/ov9282.c:722: undefined reference to `__udivdi3' >> ld: drivers/media/i2c/ov9282.c:722: undefined reference to `__udivdi3' vim +722 drivers/media/i2c/ov9282.c 711 712 static u32 ov9282_flash_duration_to_us(struct ov9282 *ov9282, u32 value) 713 { 714 /* 715 * As the calculation in ov9282_us_to_flash_duration uses an integer 716 * divison calculate in ns here to get more precision. Then check if 717 * we need to compensate that divison by incrementing the µs result. 718 */ 719 u32 frame_width = ov9282->cur_mode->width + ov9282->hblank_ctrl->val; 720 u64 ns = value * 1000 * frame_width / OV9282_STROBE_SPAN_FACTOR; 721 > 722 return DIV_ROUND_UP(ns, 1000); 723 } 724 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki