Hi Kai-Heng, Thank you for the patch! Yet something to improve: [auto build test ERROR on pci/next] [also build test ERROR on powerpc/next sparc/master linus/master sparc-next/master v5.12-rc5] [cannot apply to next-20210329] [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/0day-ci/linux/commits/Kai-Heng-Feng/PCI-Try-to-find-two-continuous-regions-for-child-resource/20210329-165155 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: microblaze-randconfig-p001-20210329 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/94d03d680678c966738f767c5fb91305a3af5c9d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kai-Heng-Feng/PCI-Try-to-find-two-continuous-regions-for-child-resource/20210329-165155 git checkout 94d03d680678c966738f767c5fb91305a3af5c9d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): arch/microblaze/pci/pci-common.c: In function 'alloc_resource': >> arch/microblaze/pci/pci-common.c:749:7: error: too few arguments to function 'pci_find_parent_resource' 749 | pr = pci_find_parent_resource(dev, r); | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/microblaze/pci/pci-common.c:16: include/linux/pci.h:1052:6: note: declared here 1052 | void pci_find_parent_resource(const struct pci_dev *dev, | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/pci_find_parent_resource +749 arch/microblaze/pci/pci-common.c d3afa58c20b651 Michal Simek 2010-01-18 738 b881bc469bdbdc Greg Kroah-Hartman 2012-12-21 739 static inline void alloc_resource(struct pci_dev *dev, int idx) d3afa58c20b651 Michal Simek 2010-01-18 740 { d3afa58c20b651 Michal Simek 2010-01-18 741 struct resource *pr, *r = &dev->resource[idx]; d3afa58c20b651 Michal Simek 2010-01-18 742 d3afa58c20b651 Michal Simek 2010-01-18 743 pr_debug("PCI: Allocating %s: Resource %d: %016llx..%016llx [%x]\n", d3afa58c20b651 Michal Simek 2010-01-18 744 pci_name(dev), idx, d3afa58c20b651 Michal Simek 2010-01-18 745 (unsigned long long)r->start, d3afa58c20b651 Michal Simek 2010-01-18 746 (unsigned long long)r->end, d3afa58c20b651 Michal Simek 2010-01-18 747 (unsigned int)r->flags); d3afa58c20b651 Michal Simek 2010-01-18 748 d3afa58c20b651 Michal Simek 2010-01-18 @749 pr = pci_find_parent_resource(dev, r); d3afa58c20b651 Michal Simek 2010-01-18 750 if (!pr || (pr->flags & IORESOURCE_UNSET) || d3afa58c20b651 Michal Simek 2010-01-18 751 request_resource(pr, r) < 0) { 6bd55f0bbaebb7 Michal Simek 2012-12-27 752 pr_warn("PCI: Cannot allocate resource region %d ", idx); 6bd55f0bbaebb7 Michal Simek 2012-12-27 753 pr_cont("of device %s, will remap\n", pci_name(dev)); d3afa58c20b651 Michal Simek 2010-01-18 754 if (pr) d3afa58c20b651 Michal Simek 2010-01-18 755 pr_debug("PCI: parent is %p: %016llx-%016llx [%x]\n", d3afa58c20b651 Michal Simek 2010-01-18 756 pr, d3afa58c20b651 Michal Simek 2010-01-18 757 (unsigned long long)pr->start, d3afa58c20b651 Michal Simek 2010-01-18 758 (unsigned long long)pr->end, d3afa58c20b651 Michal Simek 2010-01-18 759 (unsigned int)pr->flags); d3afa58c20b651 Michal Simek 2010-01-18 760 /* We'll assign a new address later */ d3afa58c20b651 Michal Simek 2010-01-18 761 r->flags |= IORESOURCE_UNSET; d3afa58c20b651 Michal Simek 2010-01-18 762 r->end -= r->start; d3afa58c20b651 Michal Simek 2010-01-18 763 r->start = 0; d3afa58c20b651 Michal Simek 2010-01-18 764 } d3afa58c20b651 Michal Simek 2010-01-18 765 } d3afa58c20b651 Michal Simek 2010-01-18 766 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org