Hi Guixin, kernel test robot noticed the following build errors: [auto build test ERROR on pci/next] [also build test ERROR on pci/for-linus linus/master v6.12-rc3 next-20241018] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Guixin-Liu/PCI-optimize-proc-sequential-file-read/20241018-135026 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20241018054728.116519-1-kanie%40linux.alibaba.com patch subject: [PATCH] PCI: optimize proc sequential file read config: loongarch-randconfig-r062-20241019 (https://download.01.org/0day-ci/archive/20241020/202410200211.RFdwjJSq-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241020/202410200211.RFdwjJSq-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410200211.RFdwjJSq-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): loongarch64-linux-ld: drivers/pci/probe.o: in function `.L5491': >> probe.c:(.text+0x2ff8): undefined reference to `pci_seq_tree_add_dev' loongarch64-linux-ld: drivers/pci/remove.o: in function `.LBB262': >> drivers/pci/remove.c:56:(.text+0x398): undefined reference to `pci_seq_tree_remove_dev' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki