tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/wip-freezer head: 9ddb4cc740408e85babad7482f50e1b4d2490759 commit: 83d18804b7330928d3176cd76939cf558581e092 [1/3] freezer: Have {,un}lock_system_sleep() save/restore flags config: x86_64-randconfig-a004-20210614 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue sched/wip-freezer git checkout 83d18804b7330928d3176cd76939cf558581e092 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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 warnings (new ones prefixed by >>): In file included from arch/x86/kernel/asm-offsets.c:13: static inline void unlock_system_sleep(unsigned int) {} ^ 1 warning generated. -- In file included from drivers/usb/misc/usb251xb.c:20: In file included from include/linux/regulator/consumer.h:35: static inline void unlock_system_sleep(unsigned int) {} ^ drivers/usb/misc/usb251xb.c:159:35: warning: unused variable 'usb2422_data' [-Wunused-const-variable] static const struct usb251xb_data usb2422_data = { ^ drivers/usb/misc/usb251xb.c:167:35: warning: unused variable 'usb2512b_data' [-Wunused-const-variable] static const struct usb251xb_data usb2512b_data = { ^ drivers/usb/misc/usb251xb.c:175:35: warning: unused variable 'usb2512bi_data' [-Wunused-const-variable] static const struct usb251xb_data usb2512bi_data = { ^ drivers/usb/misc/usb251xb.c:183:35: warning: unused variable 'usb2513b_data' [-Wunused-const-variable] static const struct usb251xb_data usb2513b_data = { ^ drivers/usb/misc/usb251xb.c:191:35: warning: unused variable 'usb2513bi_data' [-Wunused-const-variable] static const struct usb251xb_data usb2513bi_data = { ^ drivers/usb/misc/usb251xb.c:199:35: warning: unused variable 'usb2514b_data' [-Wunused-const-variable] static const struct usb251xb_data usb2514b_data = { ^ drivers/usb/misc/usb251xb.c:207:35: warning: unused variable 'usb2514bi_data' [-Wunused-const-variable] static const struct usb251xb_data usb2514bi_data = { ^ drivers/usb/misc/usb251xb.c:215:35: warning: unused variable 'usb2517_data' [-Wunused-const-variable] static const struct usb251xb_data usb2517_data = { ^ drivers/usb/misc/usb251xb.c:223:35: warning: unused variable 'usb2517i_data' [-Wunused-const-variable] static const struct usb251xb_data usb2517i_data = { ^ 10 warnings generated. -- In file included from arch/x86/kernel/asm-offsets.c:13: static inline void unlock_system_sleep(unsigned int) {} ^ 1 warning generated. vim +546 include/linux/suspend.h 544 545 static inline unsigned int lock_system_sleep(void) { return 0; } 547 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org