[skn:v5.10/ffa 4/7] drivers/firmware/arm_ffa/bus.c:170:12: warning: no previous prototype for 'arm_ffa_bus_init'

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git v5.10/ffa
head:   2cfe2ac357730fed491b3432a6278d90043b387d
commit: 0046d5c357622955a6c2db95156eb7810fef50d8 [4/7] firmware: arm_ffa: Add initial Arm FFA driver support
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-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/sudeep.holla/linux.git/commit/?id=0046d5c357622955a6c2db95156eb7810fef50d8
        git remote add skn https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git
        git fetch --no-tags skn v5.10/ffa
        git checkout 0046d5c357622955a6c2db95156eb7810fef50d8
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>):

   drivers/firmware/arm_ffa/bus.c:149:6: warning: no previous prototype for 'ffa_device_is_valid' [-Wmissing-prototypes]
     149 | bool ffa_device_is_valid(struct ffa_device *ffa_dev)
         |      ^~~~~~~~~~~~~~~~~~~
>> drivers/firmware/arm_ffa/bus.c:170:12: warning: no previous prototype for 'arm_ffa_bus_init' [-Wmissing-prototypes]
     170 | int __init arm_ffa_bus_init(void)
         |            ^~~~~~~~~~~~~~~~
>> drivers/firmware/arm_ffa/bus.c:175:13: warning: no previous prototype for 'arm_ffa_bus_exit' [-Wmissing-prototypes]
     175 | void __exit arm_ffa_bus_exit(void)
         |             ^~~~~~~~~~~~~~~~

vim +/arm_ffa_bus_init +170 drivers/firmware/arm_ffa/bus.c

   169	
 > 170	int __init arm_ffa_bus_init(void)
   171	{
   172		return bus_register(&ffa_bus_type);
   173	}
   174	
 > 175	void __exit arm_ffa_bus_exit(void)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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