Re: [PATCH v2 4/4] irqchip/gicv3: Add workaround for FUJITSU-MONAKA erratum E#030003

From: kernel test robot

Date: Sat Oct 17 2026 - 07:50:55 EST


Hi Tomohiro,

kernel test robot noticed the following build errors:

[auto build test ERROR on 24a19b953e2a3d0ea5a8c4951a0ab8f32720c907]

url: https://github.com/intel-lab-lkp/linux/commits/Tomohiro-Misono/arm64-cputype-Add-FUJITSU-MONAKA-definition/20261016-190045
base: 24a19b953e2a3d0ea5a8c4951a0ab8f32720c907
patch link: https://lore.kernel.org/r/20261016-monaka-fix-for-upstream-v2-4-fc7ede7f9f48%40fujitsu.com
patch subject: [PATCH v2 4/4] irqchip/gicv3: Add workaround for FUJITSU-MONAKA erratum E#030003
config: arm-defconfig (https://download.01.org/0day-ci/archive/20261017/202610171939.VWCcPPra-lkp@xxxxxxxxx/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 6719b9e31d6a93099612c474eec76d9f41d0275a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261017/202610171939.VWCcPPra-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610171939.VWCcPPra-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/irqchip/irq-gic-v3.c:1892:34: error: use of undeclared identifier 'ARM_CPU_IMP_FUJITSU'
1892 | if (read_cpuid_implementor() != ARM_CPU_IMP_FUJITSU ||
| ^~~~~~~~~~~~~~~~~~~
>> drivers/irqchip/irq-gic-v3.c:1893:34: error: use of undeclared identifier 'FUJITSU_CPU_PART_MONAKA'
1893 | read_cpuid_part_number() != FUJITSU_CPU_PART_MONAKA)
| ^~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.


vim +/ARM_CPU_IMP_FUJITSU +1892 drivers/irqchip/irq-gic-v3.c

1889
1890 static bool gic_enable_quirk_fujitsu_030003(void *data)
1891 {
> 1892 if (read_cpuid_implementor() != ARM_CPU_IMP_FUJITSU ||
> 1893 read_cpuid_part_number() != FUJITSU_CPU_PART_MONAKA)
1894 return false;
1895
1896 static_branch_enable(&gic_fujitsu_030003_erratum);
1897 return true;
1898 }
1899

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