[soc:multiplatform-misc-5.18 1/13] arch/arm/mach-versatile/versatile.c:56:14: warning: no previous prototype for function 'mmc_status'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git multiplatform-misc-5.18
head:   a2677c00b0f03b8cad961f785941ca257f454df3
commit: d7445676e86900f8dc363825033ff62416c216e0 [1/13] ARM: versatile: move integrator/realview/vexpress to versatile
config: arm-multi_v5_defconfig (https://download.01.org/0day-ci/archive/20220405/202204052254.Ubh7pVDq-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/commit/?id=d7445676e86900f8dc363825033ff62416c216e0
        git remote add soc https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
        git fetch --no-tags soc multiplatform-misc-5.18
        git checkout d7445676e86900f8dc363825033ff62416c216e0
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> arch/arm/mach-versatile/versatile.c:56:14: warning: no previous prototype for function 'mmc_status' [-Wmissing-prototypes]
   unsigned int mmc_status(struct device *dev)
                ^
   arch/arm/mach-versatile/versatile.c:56:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   unsigned int mmc_status(struct device *dev)
   ^
   static 
   1 warning generated.


vim +/mmc_status +56 arch/arm/mach-versatile/versatile.c

a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  55  
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 @56  unsigned int mmc_status(struct device *dev)
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  57  {
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  58  	struct amba_device *adev = container_of(dev, struct amba_device, dev);
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  59  	u32 mask;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  60  
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  61  	if (adev->res.start == VERSATILE_MMCI0_BASE)
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  62  		mask = 1;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  63  	else
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  64  		mask = 2;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  65  
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  66  	return readl(versatile_sys_base + VERSATILE_SYS_MCI_OFFSET) & mask;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  67  }
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08  68  

:::::: The code at line 56 was first introduced by commit
:::::: a70967892111934e292485ce84f1bab38cc55380 ARM: versatile: merge mach code into a single file

:::::: TO: Rob Herring <robh at kernel.org>
:::::: CC: Arnd Bergmann <arnd at arndb.de>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp