Hi Bjorn, It seems like we have met the problem you indicated, that using pci_bus_speed_strings[] in PCIE_BUS_SPEED2STR macro is only available when CONFIG_SYSFS=y. I have moved the string array to probe.c in the new patch set according to the suggestions. I hope it has not been buried in the mail list. https://lore.kernel.org/linux-pci/1579079063-5668-1-git-send-email-yangyicong@xxxxxxxxxxxxx/ On 2020/1/16 15:45, kbuild test robot wrote: > Hi Yicong, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on pci/next] > [also build test ERROR on v5.5-rc6 next-20200110] > [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/Yicong-Yang/PCI-Improve-link-speed-presentation-process/20200114-163536 > base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next > config: ia64-allnoconfig (attached as .config) > compiler: ia64-linux-gcc (GCC) 7.5.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > GCC_VERSION=7.5.0 make.cross ARCH=ia64 > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > drivers/pci/pci-sysfs.o: In function `max_link_speed_show': >>> pci-sysfs.c:(.text+0x1e01): undefined reference to `pci_bus_speed_strings' > pci-sysfs.c:(.text+0x1e10): undefined reference to `pci_bus_speed_strings' > drivers/pci/pci-sysfs.o: In function `current_link_speed_show': > pci-sysfs.c:(.text+0x2070): undefined reference to `pci_bus_speed_strings' > pci-sysfs.c:(.text+0x2080): undefined reference to `pci_bus_speed_strings' > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
