Hi "Maciej, I love your patch! Perhaps something to improve: [auto build test WARNING on tty/tty-testing] [also build test WARNING on linus/master hch-configfs/for-next v5.17-rc1 next-20220125] [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/Maciej-W-Rozycki/tty-Partially-revert-the-removal-of-the-Cyclades-public-API/20220126-172520 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing config: i386-buildonly-randconfig-r002-20220124 (https://download.01.org/0day-ci/archive/20220126/202201262147.FNYhDmDi-lkp@xxxxxxxxx/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/c9e707e313f471adbe057300f4fb163113cf062c git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maciej-W-Rozycki/tty-Partially-revert-the-removal-of-the-Cyclades-public-API/20220126-172520 git checkout c9e707e313f471adbe057300f4fb163113cf062c # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from <command-line>:32: >> ./usr/include/linux/cyclades.h:6:2: warning: #warning "Support for features provided by this header has been removed" [-Wcpp] 6 | #warning "Support for features provided by this header has been removed" | ^~~~~~~ >> ./usr/include/linux/cyclades.h:7:2: warning: #warning "Please consider updating your code" [-Wcpp] 7 | #warning "Please consider updating your code" | ^~~~~~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx