tree: https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git preview head: e675fabdbbcdb6e32dba688a20fb0bd42e0e2d5d commit: 2b7a34a480122fb652df99554f6d59c5d9f3ef24 [34/53] cxl/core: Generalize dport enumeration in the core config: arc-randconfig-r043-20220122 (https://download.01.org/0day-ci/archive/20220122/202201222055.733L3u7d-lk...) compiler: arceb-elf-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=2b... git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git git fetch --no-tags cxl preview git checkout 2b7a34a480122fb652df99554f6d59c5d9f3ef24 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/cxl/cxlmem.h:7, from drivers/cxl/core/pmem.c:6: 285 | struct pci_bus *bus); | ^~~~~~~ vim +285 drivers/cxl/cxl.h 24be641caabe25 Ben Widawsky 2021-12-01 281 42c377a63d21df Dan Williams 2022-01-05 282 bool is_cxl_port(struct device *dev); 4812be97c015bd Dan Williams 2021-06-09 283 struct cxl_port *to_cxl_port(struct device *dev); 7237f27228ec66 Dan Williams 2022-01-18 284 int devm_cxl_register_pci_bus(struct device *host, struct device *uport, 7237f27228ec66 Dan Williams 2022-01-18 @285 struct pci_bus *bus); 7237f27228ec66 Dan Williams 2022-01-18 286 struct pci_bus *cxl_port_to_pci_bus(struct cxl_port *port); 4812be97c015bd Dan Williams 2021-06-09 287 struct cxl_port *devm_cxl_add_port(struct device *host, struct device *uport, 4812be97c015bd Dan Williams 2021-06-09 288 resource_size_t component_reg_phys, 4812be97c015bd Dan Williams 2021-06-09 289 struct cxl_port *parent_port); 3c39e157b25e0c Dan Williams 2022-01-18 290 struct cxl_port *find_cxl_root(struct device *dev); 2b7a34a480122f Dan Williams 2022-01-18 291 struct cxl_dport *devm_cxl_add_dport(struct device *host, struct cxl_port *port, 2b7a34a480122f Dan Williams 2022-01-18 292 struct device *dport, int port_id, 2b7a34a480122f Dan Williams 2022-01-18 293 resource_size_t component_reg_phys); 40ba17afdfabb0 Dan Williams 2021-06-09 294 struct cxl_decoder *to_cxl_decoder(struct device *dev); 8fdcb1704f61a8 Dan Williams 2021-06-15 295 bool is_root_decoder(struct device *dev); 42c377a63d21df Dan Williams 2022-01-05 296 bool is_cxl_decoder(struct device *dev); 24be641caabe25 Ben Widawsky 2021-12-01 297 struct cxl_decoder *cxl_root_decoder_alloc(struct cxl_port *port, 24be641caabe25 Ben Widawsky 2021-12-01 298 unsigned int nr_targets); 24be641caabe25 Ben Widawsky 2021-12-01 299 struct cxl_decoder *cxl_switch_decoder_alloc(struct cxl_port *port, 24be641caabe25 Ben Widawsky 2021-12-01 300 unsigned int nr_targets); 48667f676189ec Dan Williams 2021-09-21 301 int cxl_decoder_add(struct cxl_decoder *cxld, int *target_map); 48667f676189ec Dan Williams 2021-09-21 302 int cxl_decoder_autoremove(struct device *host, struct cxl_decoder *cxld); 40ba17afdfabb0 Dan Williams 2021-06-09 303 :::::: The code at line 285 was first introduced by commit :::::: 7237f27228ec660f73924f38e553e1d2b2ff65c4 cxl/port: Introduce cxl_port_to_pci_bus() :::::: TO: Dan Williams <dan.j.williams(a)intel.com&gt; :::::: CC: Dan Williams <dan.j.williams(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org