tree: https://github.com/AsahiLinux/linux smc/work head: 3dcf1f28dd3d0b36f11098cc61187986d00ee253 commit: 4dcb7038ce2579c3fe867685d0fdc3998958edc3 [9/18] platform/apple: Add new Apple Mac SMC driver config: csky-allyesconfig (https://download.01.org/0day-ci/archive/20220208/202202080017.hd9ScSdU-lk...) compiler: csky-linux-gcc (GCC) 11.2.0 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://github.com/AsahiLinux/linux/commit/4dcb7038ce2579c3fe867685d0fdc3... git remote add asahilinux https://github.com/AsahiLinux/linux git fetch --no-tags asahilinux smc/work git checkout 4dcb7038ce2579c3fe867685d0fdc3998958edc3 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=csky SHELL=/bin/bash drivers/clk/ drivers/dma/ drivers/platform/apple/ sound/soc/apple/ 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 >>): drivers/platform/apple/smc_rtkit.c: In function 'apple_smc_cmd': drivers/platform/apple/smc_rtkit.c:69:16: error: implicit declaration of function 'FIELD_PREP' [-Werror=implicit-function-declaration] 69 | msg = (FIELD_PREP(SMC_MSG, cmd) | | ^~~~~~~~~~ In file included from include/linux/ratelimit_types.h:5, from include/linux/ratelimit.h:5, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from drivers/platform/apple/smc_rtkit.c:8: 35 | (((~UL(0)) - (UL(1) << (l)) + 1) & \ | ^~ include/linux/bits.h:38:38: note: in expansion of macro '__GENMASK' 38 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) | ^~~~~~~~~ drivers/platform/apple/smc_rtkit.c:29:41: note: in expansion of macro 'GENMASK' 29 | #define SMC_DATA GENMASK(63, 32) | ^~~~~~~ drivers/platform/apple/smc_rtkit.c:73:27: note: in expansion of macro 'SMC_DATA' 73 | FIELD_PREP(SMC_DATA, arg)); | ^~~~~~~~ 36 | (~UL(0) >> (BITS_PER_LONG - 1 - (h)))) | ^~ include/linux/bits.h:38:38: note: in expansion of macro '__GENMASK' 38 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) | ^~~~~~~~~ drivers/platform/apple/smc_rtkit.c:29:41: note: in expansion of macro 'GENMASK' 29 | #define SMC_DATA GENMASK(63, 32) | ^~~~~~~ drivers/platform/apple/smc_rtkit.c:73:27: note: in expansion of macro 'SMC_DATA' 73 | FIELD_PREP(SMC_DATA, arg)); | ^~~~~~~~ drivers/platform/apple/smc_rtkit.c:85:13: error: implicit declaration of function 'FIELD_GET' [-Werror=implicit-function-declaration] 85 | if (FIELD_GET(SMC_ID, smc->cmd_ret) != smc->msg_id) { | ^~~~~~~~~ In file included from include/linux/ratelimit_types.h:5, from include/linux/ratelimit.h:5, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from drivers/platform/apple/smc_rtkit.c:8: 35 | (((~UL(0)) - (UL(1) << (l)) + 1) & \ | ^~ include/linux/bits.h:38:38: note: in expansion of macro '__GENMASK' 38 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) | ^~~~~~~~~ drivers/platform/apple/smc_rtkit.c:29:41: note: in expansion of macro 'GENMASK' 29 | #define SMC_DATA GENMASK(63, 32) | ^~~~~~~ drivers/platform/apple/smc_rtkit.c:96:39: note: in expansion of macro 'SMC_DATA' 96 | *ret_data = FIELD_GET(SMC_DATA, smc->cmd_ret); | ^~~~~~~~ 36 | (~UL(0) >> (BITS_PER_LONG - 1 - (h)))) | ^~ include/linux/bits.h:38:38: note: in expansion of macro '__GENMASK' 38 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) | ^~~~~~~~~ drivers/platform/apple/smc_rtkit.c:29:41: note: in expansion of macro 'GENMASK' 29 | #define SMC_DATA GENMASK(63, 32) | ^~~~~~~ drivers/platform/apple/smc_rtkit.c:96:39: note: in expansion of macro 'SMC_DATA' 96 | *ret_data = FIELD_GET(SMC_DATA, smc->cmd_ret); | ^~~~~~~~ cc1: some warnings being treated as errors vim +35 include/linux/bits.h 295bcca84916cb5 Rikard Falkeborn 2020-04-06 33 295bcca84916cb5 Rikard Falkeborn 2020-04-06 34 #define __GENMASK(h, l) \ 95b980d62d52c4c Masahiro Yamada 2019-07-16 @35 (((~UL(0)) - (UL(1) << (l)) + 1) & \ 95b980d62d52c4c Masahiro Yamada 2019-07-16 @36 (~UL(0) >> (BITS_PER_LONG - 1 - (h)))) 295bcca84916cb5 Rikard Falkeborn 2020-04-06 37 #define GENMASK(h, l) \ 295bcca84916cb5 Rikard Falkeborn 2020-04-06 38 (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) 8bd9cb51daac893 Will Deacon 2018-06-19 39 :::::: The code at line 35 was first introduced by commit :::::: 95b980d62d52c4c1768ee719e8db3efe27ef52b2 linux/bits.h: make BIT(), GENMASK(), and friends available in assembly :::::: TO: Masahiro Yamada <yamada.masahiro(a)socionext.com&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org