[avpatel:riscv_acpi_b2_v2 77/82] drivers/irqchip/irq-sifive-plic.c:503:1: sparse: sparse: symbol 'plic_list' was not declared. Should it be static?

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

tree:   https://github.com/avpatel/linux.git riscv_acpi_b2_v2
head:   c8ded8b0d4632bdf521e8cfce564c604232c99ff
commit: 7f8c66ef2c056fa45776adbee359175697410a11 [77/82] irqchip: irq-sifive-plic: Add ACPI support
config: riscv-randconfig-r111-20231130 (https://download.01.org/0day-ci/archive/20231201/202312011043.CuPmDevu-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231201/202312011043.CuPmDevu-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/202312011043.CuPmDevu-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   WARNING: invalid argument to '-march': '_zihintpause'
>> drivers/irqchip/irq-sifive-plic.c:503:1: sparse: sparse: symbol 'plic_list' was not declared. Should it be static?
   drivers/irqchip/irq-sifive-plic.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/slab.h, ...):
   include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false
   drivers/irqchip/irq-sifive-plic.c: note: in included file (through include/linux/resource_ext.h, include/linux/acpi.h):
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true

vim +/plic_list +503 drivers/irqchip/irq-sifive-plic.c

   502	
 > 503	LIST_HEAD(plic_list);
   504	struct plic_priv_list {
   505		struct plic_priv *priv;
   506		struct list_head list;
   507	};
   508	

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