Hi Han, FYI, the error/warning still remains. tree: https://github.com/Freescale/linux-fslc pr/257 head: 5df3672236fb7ca1b04a8e8fa65bf039400b5020 commit: 2c4cf9ce2fcf9581d6625025b76ae73f77dde922 [8321/17025] MLK-23644: spi: spi-nxp-fspi: enable runtime pm for fspi config: openrisc-randconfig-r006-20210214 (attached as .config) compiler: or1k-linux-gcc (GCC) 9.3.0 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 # https://github.com/Freescale/linux-fslc/commit/2c4cf9ce2fcf9581d6625025b7... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc pr/257 git checkout 2c4cf9ce2fcf9581d6625025b76ae73f77dde922 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 1193 | .pm = &nxp_fspi_pm_ops, | ^~~~~~~~~~~~~~~ | nxp_fspi_mem_ops vim +1193 drivers/spi/spi-nxp-fspi.c a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1188 a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1189 static struct platform_driver nxp_fspi_driver = { a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1190 .driver = { a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1191 .name = "nxp-fspi", a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1192 .of_match_table = nxp_fspi_dt_ids, a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 @1193 .pm = &nxp_fspi_pm_ops, a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1194 }, a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1195 .probe = nxp_fspi_probe, a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1196 .remove = nxp_fspi_remove, a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1197 }; a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1198 module_platform_driver(nxp_fspi_driver); a5356aef6a907c2 Yogesh Narayan Gaur 2019-01-15 1199 :::::: The code at line 1193 was first introduced by commit :::::: a5356aef6a907c2e2aed0caaa2b88b6021394471 spi: spi-mem: Add driver for NXP FlexSPI controller :::::: TO: Yogesh Narayan Gaur <yogeshnarayan.gaur(a)nxp.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org