[openeuler:OLK-6.6 2163/2163] drivers/irqchip/irq-gic-v3.c:1517:6: warning: no previous prototype for function 'is_gicv4p1'

[openeuler:OLK-6.6 2163/2163] drivers/irqchip/irq-gic-v3.c:1517:6: warning: no previous prototype for function 'is_gicv4p1'

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   bb46ff9245f25c71ce2d456156bb2fc39c400aad
commit: 5634a3dfafb71ede4922b523f77389ef2c006b61 [2163/2163] kvm: hisi_virt: Probe and configure IPIV capacity on HIP12
config: arm64-randconfig-001-20250424 (https://download.01.org/0day-ci/archive/20250424/202504240137.L2xvmv1X-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250424/202504240137.L2xvmv1X-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/202504240137.L2xvmv1X-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-gic-v3.c:1517:6: warning: no previous prototype for function 'is_gicv4p1' [-Wmissing-prototypes]
    1517 | bool is_gicv4p1(void)
         |      ^
   drivers/irqchip/irq-gic-v3.c:1517:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    1517 | bool is_gicv4p1(void)
         | ^
         | static 
>> drivers/irqchip/irq-gic-v3.c:1526:6: warning: no previous prototype for function 'gic_dist_enable_ipiv' [-Wmissing-prototypes]
    1526 | void gic_dist_enable_ipiv(void)
         |      ^
   drivers/irqchip/irq-gic-v3.c:1526:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    1526 | void gic_dist_enable_ipiv(void)
         | ^
         | static 
   2 warnings generated.


vim +/is_gicv4p1 +1517 drivers/irqchip/irq-gic-v3.c

  1516	
> 1517	bool is_gicv4p1(void)
  1518	{
  1519		if (!gic_data.rdists.has_rvpeid)
  1520			return false;
  1521	
  1522		return true;
  1523	}
  1524	EXPORT_SYMBOL(is_gicv4p1);
  1525	
> 1526	void gic_dist_enable_ipiv(void)
  1527	{
  1528		u32 val;
  1529	
  1530		val = readl_relaxed(gic_data.dist_base + GICD_MISC_CTRL);
  1531		val |= GICD_MISC_CTRL_CFG_IPIV_EN;
  1532		writel_relaxed(val, gic_data.dist_base + GICD_MISC_CTRL);
  1533		static_branch_enable(&ipiv_enable);
  1534	
  1535		val = (0 << GICD_IPIV_CTRL_AFF_DIRECT_VPEID_SHIFT) |
  1536			(0 << GICD_IPIV_CTRL_AFF1_LEFT_SHIFT_SHIFT) |
  1537			(4 << GICD_IPIV_CTRL_AFF2_LEFT_SHIFT_SHIFT) |
  1538			(7 << GICD_IPIV_CTRL_VM_TABLE_INNERCACHE_SHIFT) |
  1539			(2 << GICD_IPIV_CTRL_VM_TABLE_SHAREABILITY_SHIFT);
  1540		writel_relaxed(val, gic_data.dist_base + GICD_IPIV_CTRL);
  1541	
  1542		/* Set target ITS address of IPIV feature */
  1543		writel_relaxed(0x4880, gic_data.dist_base + GICD_IPIV_ITS_TA_BASE);
  1544	}
  1545	EXPORT_SYMBOL(gic_dist_enable_ipiv);
  1546	

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