[kbuild-all] [chrome-os:chromeos-5.4 9731/9999] arch/arm64/kernel/vdso/vgettimeofday.c:9:5: error: no previous prototype for function '__kernel_clock_gettime'

tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: e32b8d66db3100a239a87642f0a8025c396c0670 commit: 7580417d2782bc89f27754eefaa2c9f0c8023a48 [9731/9999] UPSTREAM: ASoC: Fix SND_SOC_ALL_CODECS imply misc fallout config: arm64-randconfig-r003-20200619 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git checkout 7580417d2782bc89f27754eefaa2c9f0c8023a48 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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 >>): WARNING: unmet direct dependencies detected for SND_SOC_WM5110 Depends on SOUND && !UML && SND && SND_SOC && MFD_WM5110 Selected by - SND_SOC_SAMSUNG_TM2_WM5110 && SOUND && !UML && SND && SND_SOC && SND_SOC_SAMSUNG && MFD_ARIZONA && I2C && SPI_MASTER && (GPIOLIB || COMPILE_TEST int __kernel_clock_gettime(clockid_t clock, ^ arch/arm64/kernel/vdso/vgettimeofday.c:9:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __kernel_clock_gettime(clockid_t clock, ^ static int __kernel_gettimeofday(struct __kernel_old_timeval ^ arch/arm64/kernel/vdso/vgettimeofday.c:15:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __kernel_gettimeofday(struct __kernel_old_timeval ^ static int __kernel_clock_getres(clockid_t clock_id, ^ arch/arm64/kernel/vdso/vgettimeofday.c:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __kernel_clock_getres(clockid_t clock_id, ^ static 3 errors generated. Makefile arch include kernel null.dwo scripts source usr [scripts/Makefile.build:265: arch/arm64/kernel/vdso/vgettimeofday.o] Error 1 Target 'include/generated/vdso-offsets.h' not remade because of errors. Makefile arch include kernel null.dwo scripts source usr [arch/arm64/Makefile:163: vdso_prepare] Error 2 Target 'prepare' not remade because of errors. make: Makefile arch include kernel null.dwo scripts source usr [Makefile:179: sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/__kernel_clock_gettime +9 arch/arm64/kernel/vdso/vgettimeofday.c 28b1a824a4f44da Vincenzo Frascino 2019-06-21 @9 int __kernel_clock_gettime(clockid_t clock, 28b1a824a4f44da Vincenzo Frascino 2019-06-21 10 struct __kernel_timespec *ts) 28b1a824a4f44da Vincenzo Frascino 2019-06-21 11 { 28b1a824a4f44da Vincenzo Frascino 2019-06-21 12 return __cvdso_clock_gettime(clock, ts); 28b1a824a4f44da Vincenzo Frascino 2019-06-21 13 } 28b1a824a4f44da Vincenzo Frascino 2019-06-21 14 28b1a824a4f44da Vincenzo Frascino 2019-06-21 @15 int __kernel_gettimeofday(struct __kernel_old_timeval *tv, 28b1a824a4f44da Vincenzo Frascino 2019-06-21 16 struct timezone *tz) 28b1a824a4f44da Vincenzo Frascino 2019-06-21 17 { 28b1a824a4f44da Vincenzo Frascino 2019-06-21 18 return __cvdso_gettimeofday(tv, tz); 28b1a824a4f44da Vincenzo Frascino 2019-06-21 19 } 28b1a824a4f44da Vincenzo Frascino 2019-06-21 20 28b1a824a4f44da Vincenzo Frascino 2019-06-21 @21 int __kernel_clock_getres(clockid_t clock_id, :::::: The code at line 9 was first introduced by commit :::::: 28b1a824a4f44da46983cd2c3249f910bd4b797b arm64: vdso: Substitute gettimeofday() with C implementation :::::: TO: Vincenzo Frascino <vincenzo.frascino(a)arm.com&gt; :::::: CC: Thomas Gleixner <tglx(a)linutronix.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org