[kbuild-all] arch/csky/mm/tcm.c:14:2: error: #error "You should define DTCM_RAM_BASE"

Hi Guo, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 25a1298726e97b9d25379986f5d54d9e62ad6e93 commit: 18c07d23da5a48525b2955aa269b8bb108c19300 csky: Fixup calltrace panic date: 1 year ago config: csky-randconfig-r036-20210515 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 18c07d23da5a48525b2955aa269b8bb108c19300 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=csky 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 >>): 14 | #error "You should define DTCM_RAM_BASE" | ^~~~~ arch/csky/mm/tcm.c:109:7: warning: no previous prototype for 'tcm_alloc' [-Wmissing-prototypes] 109 | void *tcm_alloc(size_t len) | ^~~~~~~~~ arch/csky/mm/tcm.c:124:6: warning: no previous prototype for 'tcm_free' [-Wmissing-prototypes] 124 | void tcm_free(void *addr, size_t len) | ^~~~~~~~ vim +14 arch/csky/mm/tcm.c f525bb2c9e7cf1 Guo Ren 2019-11-27 11 f525bb2c9e7cf1 Guo Ren 2019-11-27 12 #ifdef CONFIG_HAVE_DTCM f525bb2c9e7cf1 Guo Ren 2019-11-27 13 #if (CONFIG_DTCM_RAM_BASE == 0xffffffff) f525bb2c9e7cf1 Guo Ren 2019-11-27 @14 #error "You should define DTCM_RAM_BASE" f525bb2c9e7cf1 Guo Ren 2019-11-27 15 #endif f525bb2c9e7cf1 Guo Ren 2019-11-27 16 :::::: The code at line 14 was first introduced by commit :::::: f525bb2c9e7cf1e3c43ab57704c9e1c836d30b34 csky: Tightly-Coupled Memory or Sram support :::::: TO: Guo Ren <guoren(a)linux.alibaba.com&gt; :::::: CC: Guo Ren <guoren(a)linux.alibaba.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org