[kbuild-all] [powerpc:next-test 105/159] arch/powerpc/kernel/syscall_64.c:177:28: error: unused function 'prep_irq_for_enabled_exit'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test head: 5811244192fc4e18c001c69300044c2acf30bd91 commit: 2a06bf3e95cd93e3640d431960181b8e47415f33 [105/159] powerpc/64: context tracking remove _TIF_NOHZ config: powerpc-randconfig-r022-20210209 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/... git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git git fetch --no-tags powerpc next-test git checkout 2a06bf3e95cd93e3640d431960181b8e47415f33 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 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 >>): static notrace inline bool prep_irq_for_enabled_exit(bool clear_ri, bool irqs_enabled) ^ 1 error generated. vim +/prep_irq_for_enabled_exit +177 arch/powerpc/kernel/syscall_64.c 176 178 { 179 if (__prep_irq_for_enabled_exit(clear_ri)) 180 return true; 181 182 /* 183 * Must replay pending soft-masked interrupts now. Don't just 184 * local_irq_enabe(); local_irq_disable(); because if we are 185 * returning from an asynchronous interrupt here, another one 186 * might hit after irqs are enabled, and it would exit via this 187 * same path allowing another to fire, and so on unbounded. 188 * 189 * If interrupts were enabled when this interrupt exited, 190 * indicating a process context (synchronous) interrupt, 191 * local_irq_enable/disable can be used, which will enable 192 * interrupts rather than keeping them masked (unclear how 193 * much benefit this is over just replaying for all cases, 194 * because we immediately disable again, so all we're really 195 * doing is allowing hard interrupts to execute directly for 196 * a very small time, rather than being masked and replayed). 197 */ 198 if (irqs_enabled) { 199 local_irq_enable(); 200 local_irq_disable(); 201 } else { 202 replay_soft_interrupts(); 203 } 204 205 return false; 206 } 207 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org