tree: https://github.com/Xilinx/linux-xlnx master head: 256af411ba94859adc39c4319a269892ab28f4a5 commit: 4b7cf5de9dc7b7b1b8655738bf5d2a5c4b1976b1 [431/513] spi: spi-zynq-qspi: Handle odd number of byte in dual parallel mode config: i386-randconfig-a006-20210618 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/Xilinx/linux-xlnx/commit/4b7cf5de9dc7b7b1b8655738bf5d2... git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx master git checkout 4b7cf5de9dc7b7b1b8655738bf5d2a5c4b1976b1 # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): ld: drivers/spi/spi-zynq-qspi.o: in function `zynq_qspi_exec_mem_op': ld: drivers/spi/spi-zynqmp-gqspi.o: in function `zynqmp_qspi_exec_op': spi-zynqmp-gqspi.c:(.text+0xd93): undefined reference to `update_stripe' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org