On 04/26/2018 02:26 AM, kbuild test robot wrote: > Hi James, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on pci/next] > [also build test ERROR on v4.17-rc2 next-20180424] > [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/James-Puthukattukaran/PCI-SUpport-to-workaround-bus-level-HW-issues/20180426-092305 > 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) 7.2.0 > 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 > make.cross ARCH=ia64 > > All errors (new ones prefixed by >>): > > drivers/pci/probe.o: In function `pci_bus_read_dev_vendor_id': >>> probe.c:(.text+0x3e02): undefined reference to `pci_bus_specific_read_dev_vendor_id' Alex/Sinan - Would it be an acceptable fix for this problem? --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2097,6 +2097,13 @@ static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l, return true; } +int __weak pci_bus_specific_read_dev_vendor_id(struct pci_bus *bus, int devfn, + u32 *l, int timeout) +{ + return -ENOTTY; +} + + bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, int timeout) { I ran the repro steps and it completes without issues. In addition, I will fix the typos Alex pointed out in the last submission and resubmit. thanks James