Re: [PATCH v2] bus: mhi: host: Add tracing support

[kernel test robot]

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	

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