[kbuild-all] Re: drivers/net/ethernet/netronome/nfp/crypto/tls.c:477:18: warning: variable 'ipv6h' set but not used

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 9c87c9f41245baa3fc4716cf39141439cf405b01 commit: b142083b585c2c03af24cca4d274f797796a4064 mptcp: MPTCP_KUNIT_TESTS should depend on MPTCP instead of selecting it date: 4 weeks ago config: arc-randconfig-r005-20201117 (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b142083b585c2c03af24cca4d274f797796a4064 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>):

drivers/net/ethernet/netronome/nfp/crypto/tls.c: In function 'nfp_net_tls_add': include/linux/compiler_attributes.h:208:41: warning: statement will never be executed [-Wswitch-unreachable] 208 | # define fallthrough __attribute__((__fallthrough__)) | ^~~~~~~~~~~~~ drivers/net/ethernet/netronome/nfp/crypto/tls.c:299:3: note: in expansion of macro 'fallthrough' 299 | fallthrough; | ^~~~~~~~~~~