Hi Kunihiko, I love your patch! Perhaps something to improve: [auto build test WARNING on pci/next] [also build test WARNING on robh/for-next v5.7-rc5 next-20200514] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Kunihiko-Hayashi/PCI-uniphier-Ad... base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/device.h:15:0, from include/linux/pci.h:37, from drivers/pci/controller/dwc/pcie-uniphier.c:18: drivers/pci/controller/dwc/pcie-uniphier.c: In function 'uniphier_pcie_probe': dev_err(dev, "Failed to get phy (%d)n", PTR_ERR(priv->phy)); ^ include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt' #define dev_fmt(fmt) fmt ^~~ dev_err(dev, "Failed to get phy (%d)n", PTR_ERR(priv->phy)); ^~~~~~~ vim +470 drivers/pci/controller/dwc/pcie-uniphier.c 430 431 static int uniphier_pcie_probe(struct platform_device *pdev) 432 { 433 struct device *dev = &pdev->dev; 434 struct uniphier_pcie_priv *priv; 435 struct resource *res; 436 int ret; 437 438 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 439 if (!priv) 440 return -ENOMEM; 441 442 priv->pci.dev = dev; 443 priv->pci.ops = &dw_pcie_ops; 444 445 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi"); 446 priv->pci.dbi_base = devm_pci_remap_cfg_resource(dev, res); 447 if (IS_ERR(priv->pci.dbi_base)) 448 return PTR_ERR(priv->pci.dbi_base); 449 450 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu"); 451 priv->pci.atu_base = devm_pci_remap_cfg_resource(dev, res); 452 if (IS_ERR(priv->pci.atu_base)) 453 priv->pci.atu_base = NULL; 454 455 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "link"); 456 priv->base = devm_ioremap_resource(dev, res); 457 if (IS_ERR(priv->base)) 458 return PTR_ERR(priv->base); 459 460 priv->clk = devm_clk_get(dev, NULL); 461 if (IS_ERR(priv->clk)) 462 return PTR_ERR(priv->clk); 463 464 priv->rst = devm_reset_control_get_shared(dev, NULL); 465 if (IS_ERR(priv->rst)) 466 return PTR_ERR(priv->rst); 467 468 priv->phy = devm_phy_optional_get(dev, "pcie-phy"); 469 if (IS_ERR(priv->phy)) { 471 return PTR_ERR(priv->phy); 472 } 473 474 platform_set_drvdata(pdev, priv); 475 476 ret = uniphier_pcie_host_enable(priv); 477 if (ret) 478 return ret; 479 480 return uniphier_add_pcie_port(priv, pdev); 481 } 482 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org