[PATCH 2/2] powerpc/perf: Check pmus_inuse flag in perf_event_print_debug()

[kbuild test robot]

Hi Madhavan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on powerpc/next]
[also build test WARNING on v5.4-rc7 next-20191111]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Madhavan-Srinivasan/powerpc-perf-Add-mtmmcr0-FC-after-ppc_set_pmu_inuse-1/20191109-143451
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-pmac32_defconfig (attached as .config)
compiler: powerpc-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=powerpc 

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

All warnings (new ones prefixed by >>):

   In file included from arch/powerpc/oprofile/common.c:17:0:
   arch/powerpc/include/asm/pmc.h: In function 'ppc_get_pmu_inuse':
>> arch/powerpc/include/asm/pmc.h:56:1: warning: no return statement in function returning non-void [-Wreturn-type]
    static inline u8 ppc_get_pmu_inuse(void) { }
    ^~~~~~

vim +56 arch/powerpc/include/asm/pmc.h

    54	
    55	static inline void ppc_set_pmu_inuse(int inuse) { }
  > 56	static inline u8 ppc_get_pmu_inuse(void) { }
    57	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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