Hi Gatien,

kernel test robot noticed the following build errors:

[auto build test ERROR on 242041164339594ca019481d54b4f68a7aaff64e]

url:    https://github.com/intel-lab-lkp/linux/commits/Gatien-Chevallier/drivers-net-stmmac-handle-start-time-set-in-the-past-for-flexible-PPS/20250827-190905
base:   242041164339594ca019481d54b4f68a7aaff64e
patch link:    https://lore.kernel.org/r/20250827-relative_flex_pps-v3-1-673e77978ba2%40foss.st.com
patch subject: [PATCH net-next v3 1/2] drivers: net: stmmac: handle start time set in the past for flexible PPS
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250828/202508281615.ExryCwiA-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250828/202508281615.ExryCwiA-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202508281615.ExryCwiA-lkp@intel.com/ (local)

All errors (new ones prefixed by >>, old ones prefixed by <<):

quoted

ERROR: modpost: "timespec64_add_safe" [drivers/net/ethernet/stmicro/stmmac/stmmac.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki