tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8c26c87b05323a7ccdc632820b85253e0bf47fd9 commit: 851c902fd2d09b2ed85181e74b43477b7a3882be spi: rspi: Remove obsolete platform_device_id entries date: 7 months ago config: x86_64-randconfig-a013-20200723 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 3d9967039d4191b77f939ddc6c6ff4275df620c2) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 851c902fd2d09b2ed85181e74b43477b7a3882be # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): static const struct spi_ops rspi_rz_ops = { ^ static const struct spi_ops qspi_ops = { ^ 2 warnings generated. vim +/rspi_rz_ops +1128 drivers/spi/spi-rspi.c 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1127 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 @1128 static const struct spi_ops rspi_rz_ops = { 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1129 .set_config_register = rspi_rz_set_config_register, 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1130 .transfer_one = rspi_rz_transfer_one, 880c6d114fd79a Geert Uytterhoeven 2014-01-30 1131 .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP, 9428a073eb703d Geert Uytterhoeven 2019-02-08 1132 .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, 2f777ec91aa062 Geert Uytterhoeven 2014-06-02 1133 .fifo_size = 8, /* 8 for TX, 32 for RX */ 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1134 }; 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1135 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 @1136 static const struct spi_ops qspi_ops = { 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1137 .set_config_register = qspi_set_config_register, 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1138 .transfer_one = qspi_transfer_one, 880c6d114fd79a Geert Uytterhoeven 2014-01-30 1139 .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | 880c6d114fd79a Geert Uytterhoeven 2014-01-30 1140 SPI_TX_DUAL | SPI_TX_QUAD | 880c6d114fd79a Geert Uytterhoeven 2014-01-30 1141 SPI_RX_DUAL | SPI_RX_QUAD, 9428a073eb703d Geert Uytterhoeven 2019-02-08 1142 .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, 2f777ec91aa062 Geert Uytterhoeven 2014-06-02 1143 .fifo_size = 32, 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1144 }; 426ef76dd8a394 Geert Uytterhoeven 2014-01-28 1145 :::::: The code at line 1128 was first introduced by commit :::::: 426ef76dd8a394a0e04d096941cd9acb49539a3e spi: rspi: Add DT support :::::: TO: Geert Uytterhoeven <geert+renesas(a)linux-m68k.org&gt; :::::: CC: Mark Brown <broonie(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org