Hi liuyun, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: e2e6e833f0e931accd24012488ed312ed9f63150 commit: 47a0b6f372d7f05822d021f86b21a34fd2142225 [1466/1466] cpufreq: Add cpufreq driver for LoongArch config: loongarch-randconfig-r053-20241114 (https://download.01.org/0day-ci/archive/20241125/202411251114.dtutDKWn-lkp@i...) compiler: loongarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241125/202411251114.dtutDKWn-lkp@i...) 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/202411251114.dtutDKWn-lkp@intel.com/ All errors (new ones prefixed by >>): loongarch64-linux-ld: drivers/cpufreq/loongson3-acpi-cpufreq.o: in function `loongson3_cpufreq_cpu_exit':

...

loongson3-acpi-cpufreq.c:(.text+0x5b4): undefined reference to `acpi_processor_unregister_performance' loongarch64-linux-ld: drivers/cpufreq/loongson3-acpi-cpufreq.o: in function `.L231': loongson3-acpi-cpufreq.c:(.text+0x1ba8): undefined reference to `acpi_processor_register_performance' loongarch64-linux-ld: drivers/cpufreq/loongson3-acpi-cpufreq.o: in function `.L276': loongson3-acpi-cpufreq.c:(.text+0x225c): undefined reference to `acpi_processor_unregister_performance'

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