On Thu, Jan 07, 2021 at 04:04:47AM +0800, kernel test robot wrote: > Hi Pawel, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > master > head: e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62 > commit: 22447a99c97e353bde8f90c2353873f27681d57c drivers/soc/litex: add LiteX > SoC Controller driver > date: 8 weeks ago > config: x86_64-randconfig-a001-20210107 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project > 5c951623bc8965fa1e89660f2f5f4a2944e4981a) > 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22447a99c97e353bde8f90c2353873f27681d57c > git remote add linus > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout 22447a99c97e353bde8f90c2353873f27681d57c > # 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 <[email protected]> > > All warnings (new ones prefixed by >>): > > >> drivers/soc/litex/litex_soc_ctrl.c:143:34: warning: unused variable > >> 'litex_soc_ctrl_of_match' [-Wunused-const-variable] > static const struct of_device_id litex_soc_ctrl_of_match[] = { > ^ > 1 warning generated. > > > vim +/litex_soc_ctrl_of_match +143 drivers/soc/litex/litex_soc_ctrl.c > > 142 > > 143 static const struct of_device_id litex_soc_ctrl_of_match[] = { > 144 {.compatible = "litex,soc-controller"}, > 145 {}, > 146 }; > 147 >
I don't use clang but GCC, and I cannot reproduce this warning. $ make drivers/soc/litex/litex_soc_ctrl.o CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh DESCEND objtool CC drivers/soc/litex/litex_soc_ctrl.o Also, I can see litex_soc_ctrl_of_match is used. I am not sure what is going on here. -Stafford
