Re: [PATCH 1/9] bpf: prepare for moving map common stuff into one place

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

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Hi Ming,

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.4 next-20160111]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Ming-Lei/bpf-support-percpu-ARRAY-map/20160112-000350
config: sparc64-allmodconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All error/warnings (new ones prefixed by >>):

   kernel/bpf/map.c: In function 'map_delete_elem_nop':
>> kernel/bpf/map.c:24:10: error: 'EINVAL' undeclared (first use in this function)
     return -EINVAL;
             ^
   kernel/bpf/map.c:24:10: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/bpf/map.c:25:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +/EINVAL +24 kernel/bpf/map.c

    18	{
    19		return NULL;
    20	}
    21	
    22	int map_delete_elem_nop(struct bpf_map *map, void *key)
    23	{
  > 24		return -EINVAL;
  > 25	}
    26	

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

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