drivers/base/arch_numa.c:58:2: warning: Returning an integer in a function with pointer return type is not portable.

drivers/base/arch_numa.c:58:2: warning: Returning an integer in a function with pointer return type is not portable.

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Atish Patra <atish.patra@wdc.com>
CC: Palmer Dabbelt <palmerdabbelt@google.com>
CC: Greentime Hu <greentime.hu@sifive.com>
CC: Anup Patel <anup@brainfault.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3fb6d0e00efc958d01c2f109c8453033a2d96796
commit: 4f0e8eef772ee4438f304b2178bc28c958b6c13d riscv: Add numa support for riscv64 platform
date:   6 weeks ago
:::::: branch date: 4 hours ago
:::::: commit date: 6 weeks ago
compiler: riscv32-linux-gcc (GCC) 9.3.0

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


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

>> drivers/base/arch_numa.c:58:2: warning: Returning an integer in a function with pointer return type is not portable. [CastIntegerToAddressAtReturn]
    return node_to_cpumask_map[node];
    ^

vim +58 drivers/base/arch_numa.c

a194c5f2d2b3a0 arch/arm64/mm/numa.c Zhengyuan Liu       2020-09-21  48  
a194c5f2d2b3a0 arch/arm64/mm/numa.c Zhengyuan Liu       2020-09-21  49  	if (node == NUMA_NO_NODE)
a194c5f2d2b3a0 arch/arm64/mm/numa.c Zhengyuan Liu       2020-09-21  50  		return cpu_all_mask;
a194c5f2d2b3a0 arch/arm64/mm/numa.c Zhengyuan Liu       2020-09-21  51  
a194c5f2d2b3a0 arch/arm64/mm/numa.c Zhengyuan Liu       2020-09-21  52  	if (WARN_ON(node < 0 || node >= nr_node_ids))
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  53  		return cpu_none_mask;
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  54  
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  55  	if (WARN_ON(node_to_cpumask_map[node] == NULL))
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  56  		return cpu_online_mask;
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  57  
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08 @58  	return node_to_cpumask_map[node];
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  59  }
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  60  EXPORT_SYMBOL(cpumask_of_node);
1a2db300348b79 arch/arm64/mm/numa.c Ganapatrao Kulkarni 2016-04-08  61  

:::::: The code at line 58 was first introduced by commit
:::::: 1a2db300348b799479d2d22b84d51b27ad0458c7 arm64, numa: Add NUMA support for arm64 platforms.

:::::: TO: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
:::::: CC: Will Deacon <will.deacon@arm.com>

---
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