tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: a3975dea1696b7c81319dc4b66e3c378dd47ccfb commit: 61bb798767e4a55165ab0cdaf72dd7459ebab0cc [319/378] staging: vt6656: vnt_get_rtscts_rsvtime_le replace with rts/cts duration. config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b) 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 61bb798767e4a55165ab0cdaf72dd7459ebab0cc # 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: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): >> drivers/staging/vt6656/rxtx.c:42:18: warning: unused variable 'vnt_frame_time' [-Wunused-const-variable] static const u16 vnt_frame_time[MAX_RATE] = { ^ 1 warning generated. vim +/vnt_frame_time +42 drivers/staging/vt6656/rxtx.c 92b96797118e58 Forest Bond 2009-06-13 41 3436accadc3f17 Malcolm Priestley 2020-04-19 @42 static const u16 vnt_frame_time[MAX_RATE] = { 3436accadc3f17 Malcolm Priestley 2020-04-19 43 10, 20, 55, 110, 24, 36, 48, 72, 96, 144, 192, 216 3436accadc3f17 Malcolm Priestley 2020-04-19 44 }; 3436accadc3f17 Malcolm Priestley 2020-04-19 45 :::::: The code at line 42 was first introduced by commit :::::: 3436accadc3f179a108071df552a6b82542523b1 staging: vt6656: Move vnt_get_frame_time and vnt_get_phy_field to rxtx :::::: TO: Malcolm Priestley <tvboxspy@xxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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