[kbuild-all] Re: [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 >> arch/arm64/kernel/vdso/vgettimeofday.c:9:5: error: no previous prototype for function '__kernel_clock_gettime' 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 >> arch/arm64/kernel/vdso/vgettimeofday.c:15:5: error: no previous prototype for function '__kernel_gettimeofday' 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 >> arch/arm64/kernel/vdso/vgettimeofday.c:21:5: error: no previous prototype for function '__kernel_clock_getres' 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.