[kbuild-all] [nbd168-wireless:mt76 55/80] drivers/net/wireless/mediatek/mt76/mt7921/mac.c:27:1: warning: no previous prototype for function 'mt7921_next_txs_set'

tree: https://github.com/nbd168/wireless mt76 head: 089a831fb7a99526b602bc34764dc213f335d07d commit: 97c4bed80d5a6889eb1335b3dfb31e0afb8e3196 [55/80] mt76: mt7921: introduce mac tx done handling config: powerpc-randconfig-r032-20210618 (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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://github.com/nbd168/wireless/commit/97c4bed80d5a6889eb1335b3dfb31e0... git remote add nbd168-wireless https://github.com/nbd168/wireless git fetch --no-tags nbd168-wireless mt76 git checkout 97c4bed80d5a6889eb1335b3dfb31e0afb8e3196 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 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 >>): In file included from drivers/net/wireless/mediatek/mt76/mt7921/mac.c:4: In file included from include/linux/devcoredump.h:8: In file included from include/linux/device.h:15: In file included from include/linux/dev_printk.h:16: In file included from include/linux/ratelimit.h:6: In file included from include/linux/sched.h:12: In file included from arch/powerpc/include/asm/current.h:13: In file included from arch/powerpc/include/asm/paca.h:17: In file included from arch/powerpc/include/asm/lppaca.h:46: In file included from arch/powerpc/include/asm/mmu.h:147: In file included from include/linux/bug.h:5: In file included from arch/powerpc/include/asm/bug.h:109: In file included from include/asm-generic/bug.h:20: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:32: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:309:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ mt7921_next_txs_set(struct mt7921_dev *dev, struct mt76_wcid *wcid, ^ drivers/net/wireless/mediatek/mt76/mt7921/mac.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit unsigned long ^ static mt7921_next_txs_timeout(struct mt7921_dev *dev, struct mt76_wcid *wcid) ^ drivers/net/wireless/mediatek/mt76/mt7921/mac.c:37:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool ^ static 3 warnings generated. vim +/mt7921_next_txs_set +27 drivers/net/wireless/mediatek/mt76/mt7921/mac.c 25 26 unsigned long 28 u32 timeout) 29 { 30 struct mt7921_sta *msta; 31 32 msta = container_of(wcid, struct mt7921_sta, wcid); 33 msta->next_txs_ts = jiffies + msecs_to_jiffies(timeout); 34 return msta->next_txs_ts; 35 } 36 37 bool 39 { 40 struct mt7921_sta *msta; 41 42 msta = container_of(wcid, struct mt7921_sta, wcid); 43 return time_is_before_jiffies(msta->next_txs_ts); 44 } 45 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org