Hi Mordechay, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c06a2ba62fc401b7aaefd23f5d0bc06d2457ccc1 commit: 9dbb62a29042e543ab6671dc12c1473c3cbc58c2 iwlwifi: mvm: add debugfs entry to trigger a dump as any time-point date: 3 months ago config: arm64-randconfig-r001-20210513 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a0fed635fe1701470062495a6ffee1c608f3f1bc) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 9dbb62a29042e543ab6671dc12c1473c3cbc58c2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): MVM_DEBUGFS_WRITE_FILE_OPS(dbg_time_point, 64); ^ drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c:1554:2: note: expanded from macro 'MVM_DEBUGFS_WRITE_FILE_OPS' _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm) ^ drivers/net/wireless/intel/iwlwifi/mvm/debugfs.h:39:37: note: expanded from macro '_MVM_DEBUGFS_WRITE_FILE_OPS' static const struct file_operations iwl_dbgfs_##name##_ops = { \ ^ <scratch space>:48:1: note: expanded from here iwl_dbgfs_dbg_time_point_ops ^ 1 warning generated. vim +/iwl_dbgfs_dbg_time_point_ops +1807 drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c 1780 1781 /* Device wide debugfs entries */ 1782 MVM_DEBUGFS_READ_FILE_OPS(ctdp_budget); 1783 MVM_DEBUGFS_WRITE_FILE_OPS(stop_ctdp, 8); 1784 MVM_DEBUGFS_WRITE_FILE_OPS(force_ctkill, 8); 1785 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16); 1786 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8); 1787 MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8); 1788 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64); 1789 MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64); 1790 MVM_DEBUGFS_READ_FILE_OPS(nic_temp); 1791 MVM_DEBUGFS_READ_FILE_OPS(stations); 1792 MVM_DEBUGFS_READ_FILE_OPS(rs_data); 1793 MVM_DEBUGFS_READ_FILE_OPS(bt_notif); 1794 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd); 1795 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64); 1796 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats); 1797 MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats); 1798 MVM_DEBUGFS_READ_FILE_OPS(fw_ver); 1799 MVM_DEBUGFS_READ_FILE_OPS(phy_integration_ver); 1800 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10); 1801 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10); 1802 MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10); 1803 MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10); 1804 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8); 1805 MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8); 1806 MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64); 1808 MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl, 1809 (IWL_RSS_INDIRECTION_TABLE_SIZE * 2)); 1810 MVM_DEBUGFS_WRITE_FILE_OPS(inject_packet, 512); 1811 MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie, 512); 1812 MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie_restore, 512); 1813 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org