Hi Krishna, kernel test robot noticed the following build warnings: [auto build test WARNING on 3006adf3be79cde4d14b1800b963b82b6e5572e0] url: https://github.com/intel-lab-lkp/linux/commits/Krishna-chaitanya-chundru/bus-mhi-host-Add-tracing-support/20231017-120241 base: 3006adf3be79cde4d14b1800b963b82b6e5572e0 patch link: https://lore.kernel.org/r/20231013-ftrace_support-v2-1-6e893ce010b5%40quicinc.com patch subject: [PATCH v2] bus: mhi: host: Add tracing support config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231017/202310171556.hmPBsvRX-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231017/202310171556.hmPBsvRX-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310171556.hmPBsvRX-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/bus/mhi/host/main.c:249:12: warning: no previous prototype for 'mhi_to_physical' [-Wmissing-prototypes] 249 | dma_addr_t mhi_to_physical(struct mhi_ring *ring, void *addr) | ^~~~~~~~~~~~~~~ vim +/mhi_to_physical +249 drivers/bus/mhi/host/main.c 248 > 249 dma_addr_t mhi_to_physical(struct mhi_ring *ring, void *addr) 250 { 251 return (addr - ring->base) + ring->iommu_base; 252 } 253 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
