arch/riscv/kernel/irq.c:49:1: sparse: sparse: symbol '__pcpu_scope_irq_stack' was not declared. Should it be static?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1f874787ed9a2d78ed59cb21d0d90ac0178eceb0
commit: 163e76cc6ef43b7a5e9b6e245a6d6667c9d9b4a7 riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK
date:   7 months ago
config: riscv-randconfig-r122-20231115 (https://download.01.org/0day-ci/archive/20240105/202401051709.Lg5tIeRM-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240105/202401051709.Lg5tIeRM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401051709.Lg5tIeRM-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/riscv/kernel/irq.c:49:1: sparse: sparse: symbol '__pcpu_scope_irq_stack' was not declared. Should it be static?

vim +/__pcpu_scope_irq_stack +49 arch/riscv/kernel/irq.c

    35	
    36	#ifdef CONFIG_VMAP_STACK
    37	static void init_irq_stacks(void)
    38	{
    39		int cpu;
    40		ulong *p;
    41	
    42		for_each_possible_cpu(cpu) {
    43			p = arch_alloc_vmap_stack(IRQ_STACK_SIZE, cpu_to_node(cpu));
    44			per_cpu(irq_stack_ptr, cpu) = p;
    45		}
    46	}
    47	#else
    48	/* irq stack only needs to be 16 byte aligned - not IRQ_STACK_SIZE aligned. */
  > 49	DEFINE_PER_CPU_ALIGNED(ulong [IRQ_STACK_SIZE/sizeof(ulong)], irq_stack);
    50	

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