[morse:mpam/snapshot/v5.16 94/137] drivers/platform/mpam/mpam_devices.c:660:6: warning: no previous prototype for 'mpam_enable_once'

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.16
head:   364c1c42b229912132e1615c2ce15be7154e2156
commit: 33a96085f6c98eddf4ae74babf67cf03c979e2fb [94/137] arm_mpam: Add cpuhp callbacks to probe MSC hardware
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220126/202201262115.SStlJyqy-lkp(a)intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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/morse/linux.git/commit/?id=33a96085f6c98eddf4ae74babf67cf03c979e2fb
        git remote add morse https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git
        git fetch --no-tags morse mpam/snapshot/v5.16
        git checkout 33a96085f6c98eddf4ae74babf67cf03c979e2fb
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/platform/mpam/

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/platform/mpam/mpam_devices.c:299:5: warning: no previous prototype for 'mpam_ris_get_affinity' [-Wmissing-prototypes]
     299 | int mpam_ris_get_affinity(struct mpam_msc *msc, cpumask_t *affinity,
         |     ^~~~~~~~~~~~~~~~~~~~~
   drivers/platform/mpam/mpam_devices.c:332:5: warning: no previous prototype for 'mpam_ris_create_locked' [-Wmissing-prototypes]
     332 | int mpam_ris_create_locked(struct mpam_msc *msc, u8 ris_idx,
         |     ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/platform/mpam/mpam_devices.c:660:6: warning: no previous prototype for 'mpam_enable_once' [-Wmissing-prototypes]
     660 | void mpam_enable_once(void)
         |      ^~~~~~~~~~~~~~~~
   drivers/platform/mpam/mpam_devices.c:700:5: warning: no previous prototype for 'mpam_msc_drv_remove' [-Wmissing-prototypes]
     700 | int mpam_msc_drv_remove(struct platform_device *pdev)
         |     ^~~~~~~~~~~~~~~~~~~


vim +/mpam_enable_once +660 drivers/platform/mpam/mpam_devices.c

   659	
 > 660	void mpam_enable_once(void)
   661	{
   662		mutex_lock(&mpam_cpuhp_state_lock);
   663		cpuhp_remove_state(mpam_cpuhp_state);
   664		mpam_cpuhp_state = 0;
   665		mutex_unlock(&mpam_cpuhp_state_lock);
   666	
   667		mpam_register_cpuhp_callbacks(mpam_cpu_online);
   668	
   669		pr_info("MPAM enabled\n");
   670	}
   671	

---
0-DAY CI Kernel Test Service, Intel Corporation
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