Hi "windy.bi.enflame", Thank you for the patch! Perhaps something to improve: [auto build test WARNING on helgaas-pci/next] [also build test WARNING on v5.18-rc7 next-20220516] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/windy-bi-enflame/drivers-pci-wait-downstream-hierarchy-ready-instead-of-slot-itself-ready-after-secondary-bus-reset/20220517-013158 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: alpha-defconfig (https://download.01.org/0day-ci/archive/20220517/202205171330.ye71SisD-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 11.3.0 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 # https://github.com/intel-lab-lkp/linux/commit/99d829ca818d01cbd8bd4f95353f58a01723fe21 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review windy-bi-enflame/drivers-pci-wait-downstream-hierarchy-ready-instead-of-slot-itself-ready-after-secondary-bus-reset/20220517-013158 git checkout 99d829ca818d01cbd8bd4f95353f58a01723fe21 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash drivers/pci/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/pci/pci.c:5052:5: warning: no previous prototype for 'pci_bridge_secondary_bus_wait' [-Wmissing-prototypes] 5052 | int pci_bridge_secondary_bus_wait(struct pci_dev *bridge, int timeout) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/pci_bridge_secondary_bus_wait +5052 drivers/pci/pci.c 5051 > 5052 int pci_bridge_secondary_bus_wait(struct pci_dev *bridge, int timeout) 5053 { 5054 struct pci_dev *dev; 5055 int delay = 1; 5056 5057 if (!bridge->subordinate || list_empty(&bridge->subordinate->devices)) 5058 return 0; 5059 5060 list_for_each_entry(dev, &bridge->subordinate->devices, bus_list) { 5061 while (!pci_device_is_present(dev)) { 5062 if (delay > timeout) { 5063 pci_warn(dev, "secondary bus not ready after %dms\n", delay); 5064 return -ENOTTY; 5065 } 5066 5067 msleep(delay); 5068 delay *= 2; 5069 } 5070 } 5071 5072 return 0; 5073 } 5074 -- 0-DAY CI Kernel Test Service https://01.org/lkp
