tree: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git testing/next head: 3c9722514c3fb74bbe0af87c20bc6b4c47121287 commit: a0f0bc95705446b8b1476338056bf869271ba36a [32/38] usb: dwc2: override PHY input signals with usb role switch support config: x86_64-randconfig-r022-20200909 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 8893d0816ccdf8998d2e21b5430e9d6abe7ef465) 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 git checkout a0f0bc95705446b8b1476338056bf869271ba36a # 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@xxxxxxxxx> All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: usb_role_switch_get_drvdata >>> referenced by drd.c:71 (drivers/usb/dwc2/drd.c:71) >>> usb/dwc2/drd.o:(dwc2_drd_role_sw_set) in archive drivers/built-in.a --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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