Hi Michal, FYI, the error/warning still remains. tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4 head: d128303e4c53bcf7775c46771bf64c71596f3303 commit: 3d600fd776cbda29abdea084f7437f7d9102b2a5 [904/1762] usb: dwc3: Add support for removing vbus when suspended config: x86_64-randconfig-a014-20210615 (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://github.com/Xilinx/linux-xlnx/commit/3d600fd776cbda29abdea084f7437f7d9102b2a5 git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx xlnx_rebase_v5.4 git checkout 3d600fd776cbda29abdea084f7437f7d9102b2a5 # 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 All errors (new ones prefixed by >>): >> ld.lld: error: duplicate symbol: dwc3_set_simple_data >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/core.o:(dwc3_set_simple_data) in archive drivers/built-in.a >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/trace.o:(.text+0x20) in archive drivers/built-in.a -- >> ld.lld: error: duplicate symbol: dwc3_set_simple_data >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/core.o:(dwc3_set_simple_data) in archive drivers/built-in.a >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/host.o:(.text+0x20) in archive drivers/built-in.a -- >> ld.lld: error: duplicate symbol: dwc3_set_simple_data >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/core.o:(dwc3_set_simple_data) in archive drivers/built-in.a >>> defined at core.h:1422 (drivers/usb/dwc3/core.h:1422) >>> usb/dwc3/debugfs.o:(.text+0x20) in archive drivers/built-in.a --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org