tree: https://github.com/intel/tdx.git guest head: a81fb28d2e12ec7ee9667fbd8b08c7128d352f10 commit: 9627c7de2c9fd39517b723ef9759e9579f25800c [37/107] pci: Add pci_iomap_shared{,_range} config: parisc-randconfig-r026-20210726 (attached as .config) compiler: hppa64-linux-gcc (GCC) 10.3.0 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/intel/tdx/commit/9627c7de2c9fd39517b723ef9759e9579f25800c git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx guest git checkout 9627c7de2c9fd39517b723ef9759e9579f25800c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All error/warnings (new ones prefixed by >>): lib/pci_iomap.c: In function 'map_ioremap_shared': >> lib/pci_iomap.c:30:9: error: implicit declaration of function 'ioremap_shared'; did you mean 'map_ioremap_shared'? [-Werror=implicit-function-declaration] 30 | return ioremap_shared(addr, size); | ^~~~~~~~~~~~~~ | map_ioremap_shared >> lib/pci_iomap.c:30:9: warning: returning 'int' from a function with return type 'void *' makes pointer from integer without a cast [-Wint-conversion] 30 | return ioremap_shared(addr, size); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +30 lib/pci_iomap.c 27 28 static void __iomem *map_ioremap_shared(phys_addr_t addr, size_t size) 29 { > 30 return ioremap_shared(addr, size); 31 } 32 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org