tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 86cfccb66937dd6cbf26ed619958b9e587e6a115 commit: 0b0e299720bb99428892a23ecbd2b4b7f61ccf6d net: dsa: sja1105: use detected device id instead of DT one on mismatch date: 2 days ago config: riscv-randconfig-r034-20200807 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project aa57cabae2fc5abc08ab3e17b45f2890fc7c9e42) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu git checkout 0b0e299720bb99428892a23ecbd2b4b7f61ccf6d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): for (match = sja1105_dt_ids; match->compatible; match++) { ~~~ ~~~~~~~^~~~~~~~~~ 1 warning generated. vim +3418 drivers/net/dsa/sja1105/sja1105_main.c 3395 3396 static int sja1105_check_device_id(struct sja1105_private *priv) 3397 { 3398 const struct sja1105_regs *regs = priv->info->regs; 3399 u8 prod_id[SJA1105_SIZE_DEVICE_ID] = {0}; 3400 struct device *dev = &priv->spidev->dev; 3401 const struct of_device_id *match; 3402 u32 device_id; 3403 u64 part_no; 3404 int rc; 3405 3406 rc = sja1105_xfer_u32(priv, SPI_READ, regs->device_id, &device_id, 3407 NULL); 3408 if (rc < 0) 3409 return rc; 3410 3411 rc = sja1105_xfer_buf(priv, SPI_READ, regs->prod_id, prod_id, 3412 SJA1105_SIZE_DEVICE_ID); 3413 if (rc < 0) 3414 return rc; 3415 3416 sja1105_unpack(prod_id, &part_no, 19, 4, SJA1105_SIZE_DEVICE_ID); 3417 3419 const struct sja1105_info *info = match->data; 3420 3421 /* Is what's been probed in our match table at all? */ 3422 if (info->device_id != device_id || info->part_no != part_no) 3423 continue; 3424 3425 /* But is it what's in the device tree? */ 3426 if (priv->info->device_id != device_id || 3427 priv->info->part_no != part_no) { 3428 dev_warn(dev, "Device tree specifies chip %s but found %s, please fix it!\n", 3429 priv->info->name, info->name); 3430 /* It isn't. No problem, pick that up. */ 3431 priv->info = info; 3432 } 3433 3434 return 0; 3435 } 3436 3437 dev_err(dev, "Unexpected {device ID, part number}: 0x%x 0x%llx\n", 3438 device_id, part_no); 3439 3440 return -ENODEV; 3441 } 3442 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org