Hi Yue, I love your patch! Perhaps something to improve: [auto build test WARNING on pci/next] [also build test WARNING on v4.19-rc7 next-20181008] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Hanjie-Lin/add-the-Amlogic-Meson-PCIe-controller-driver/20181009-001429 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next coccinelle warnings: (new ones prefixed by >>) >> drivers/pci/controller/dwc/pci-meson.c:190:1-3: WARNING: PTR_ERR_OR_ZERO can be used drivers/pci/controller/dwc/pci-meson.c:267:1-3: WARNING: PTR_ERR_OR_ZERO can be used Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation