Hi Jonathan, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on pci/next] [also build test ERROR on linus/master v5.12-rc7] [cannot apply to next-20210413] [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/Jonathan-Cameron/PCI-Data-Object... base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: i386-randconfig-a001-20210413 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/a4c437e38a2da5abc1d41d09335d34a66... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jonathan-Cameron/PCI-Data-Object-Exchange-support-CXL-CDAT/20210414-000832 git checkout a4c437e38a2da5abc1d41d09335d34a66668b4fa # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org