tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6f59bc242877fcb9c9a5136ea62d383fce5615df commit: 3d3a5814228feedd46fbddbeab381ae9bc2996ba [12185/12461] parisc: Fix missing prototype for 'toc_intr' warning in toc.c config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20220118/202201182205.RYtP0ybc-lk...) compiler: hppa-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 3d3a5814228feedd46fbddbeab381ae9bc2996ba # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=parisc SHELL=/bin/bash arch/parisc/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: arch/parisc/kernel/toc.c:64:32: sparse: sparse: symbol 'toc_intr' redeclared with different type (different modifiers): arch/parisc/kernel/toc.c:64:32: sparse: void extern [addressable] [noreturn] [toplevel] toc_intr( ... ) arch/parisc/kernel/toc.c: note: in included file (through arch/parisc/include/asm/spinlock.h, arch/parisc/include/asm/atomic.h, include/linux/atomic.h, ...): arch/parisc/include/asm/processor.h:292:13: sparse: note: previously declared as: arch/parisc/include/asm/processor.h:292:13: sparse: void extern [addressable] [toplevel] toc_intr( ... ) vim +64 arch/parisc/kernel/toc.c bc294838cc3443 Sven Schnelle 2021-10-14 63 bc294838cc3443 Sven Schnelle 2021-10-14 @64 void notrace __noreturn __cold toc_intr(struct pt_regs *regs) bc294838cc3443 Sven Schnelle 2021-10-14 65 { bc294838cc3443 Sven Schnelle 2021-10-14 66 struct pdc_toc_pim_20 pim_data20; bc294838cc3443 Sven Schnelle 2021-10-14 67 struct pdc_toc_pim_11 pim_data11; bc294838cc3443 Sven Schnelle 2021-10-14 68 d6ab9fc74513ae Helge Deller 2022-01-07 69 /* verify we wrote regs to the correct stack */ d6ab9fc74513ae Helge Deller 2022-01-07 70 BUG_ON(regs != (struct pt_regs *)&per_cpu(toc_stack, raw_smp_processor_id())); bc294838cc3443 Sven Schnelle 2021-10-14 71 bc294838cc3443 Sven Schnelle 2021-10-14 72 if (boot_cpu_data.cpu_type >= pcxu) { bc294838cc3443 Sven Schnelle 2021-10-14 73 if (pdc_pim_toc20(&pim_data20)) bc294838cc3443 Sven Schnelle 2021-10-14 74 panic("Failed to get PIM data"); bc294838cc3443 Sven Schnelle 2021-10-14 75 toc20_to_pt_regs(regs, &pim_data20); bc294838cc3443 Sven Schnelle 2021-10-14 76 } else { bc294838cc3443 Sven Schnelle 2021-10-14 77 if (pdc_pim_toc11(&pim_data11)) bc294838cc3443 Sven Schnelle 2021-10-14 78 panic("Failed to get PIM data"); bc294838cc3443 Sven Schnelle 2021-10-14 79 toc11_to_pt_regs(regs, &pim_data11); bc294838cc3443 Sven Schnelle 2021-10-14 80 } bc294838cc3443 Sven Schnelle 2021-10-14 81 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org