[kbuild-all] [aegl:dsa_page_zero_prototype 31/39] drivers/dma/idxd/dsa_page_clear_engine.c:29:5: error: no previous prototype for 'get_clear_pages'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git dsa_page_zero_prototype head: 443bff56d346197a2f8c09c7159ebc9e7440429b commit: ec41aa6ef6cba25e349a04e3b4cc1e37217d54f6 [31/39] mm/pagezero: Add stub driver to test registration API config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git/commit/?id... git remote add aegl https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git git fetch --no-tags aegl dsa_page_zero_prototype git checkout ec41aa6ef6cba25e349a04e3b4cc1e37217d54f6 # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 >>): 29 | int get_clear_pages(void *v, int migratetype, int want, struct list_head *l, int *countp) | ^~~~~~~~~~~~~~~ 35 | void add_new_page(void *v, struct page *page) | ^~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/get_clear_pages +29 drivers/dma/idxd/dsa_page_clear_engine.c 27 28 /* Called with zone->lock held */ 30 { 31 return 0; 32 } 33 34 /* Called with zone->lock held */ 36 { 37 } 38 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org