Hi Markus, [auto build test WARNING on ia64/next] [also build test WARNING on v4.8-rc3] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/SF-Markus-Elfring/IA64-Fine-tuning-for-some-function-implementations/20160827-021651 base: https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git next config: ia64-allnoconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 4.9.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=ia64 All warnings (new ones prefixed by >>): arch/ia64/mm/tlb.c: In function 'ia64_global_tlb_purge': >> arch/ia64/mm/tlb.c:247:5: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (mm != active_mm) ^ vim +/else +247 arch/ia64/mm/tlb.c 231 return; 232 } else 233 need_ptcg_sem = (num_possible_cpus() > nptcg); 234 235 resetsema: 236 spinaphore_init(&ptcg_sem, max_purges); 237 } 238 239 void 240 ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start, 241 unsigned long end, unsigned long nbits) 242 { 243 struct mm_struct *active_mm = current->active_mm; 244 245 toolatetochangeptcgsem = 1; 246 > 247 if (mm != active_mm) 248 /* Restore region IDs for mm */ 249 if (mm && active_mm) { 250 activate_context(mm); 251 } else { 252 flush_tlb_all(); 253 return; 254 } 255 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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