[openeuler:OLK-6.6 3541/3541] drivers/irqchip/irq-gic-v3.c:561:6: warning: no previous prototype for 'gic_irq_set_prio'

[openeuler:OLK-6.6 3541/3541] drivers/irqchip/irq-gic-v3.c:561:6: warning: no previous prototype for 'gic_irq_set_prio'

[kernel test robot]

Hi Qinxin,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   cd9eb9b4365b71652b2c2ac58293bea47c9f9302
commit: f0f9be237c2266d30fa01c294577438a2e2ee749 [3541/3541] gic: increase the arch_timer priority to avoid hardlockup
config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20251213/202512130131.7HrtXRUl-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251213/202512130131.7HrtXRUl-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/202512130131.7HrtXRUl-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-gic-v3.c:561:6: warning: no previous prototype for 'gic_irq_set_prio' [-Wmissing-prototypes]
     561 | void gic_irq_set_prio(struct irq_data *d, u8 prio)
         |      ^~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA
   Depends on [n]: CGROUPS [=n]
   Selected by [y]:
   - ARM64 [=y]
   WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE
   Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y]
   Selected by [y]:
   - ARM64 [=y]


vim +/gic_irq_set_prio +561 drivers/irqchip/irq-gic-v3.c

   560	
 > 561	void gic_irq_set_prio(struct irq_data *d, u8 prio)
   562	{
   563		void __iomem *base = gic_dist_base(d);
   564		u32 offset, index;
   565	
   566		offset = convert_offset_index(d, GICD_IPRIORITYR, &index);
   567	
   568		writeb_relaxed(prio, base + offset + index);
   569	}
   570	

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https://github.com/intel/lkp-tests/wiki