linux-kernel - [arm-integrator:kernel-in-vmalloc-v5.18-rc1 19/31] arch/csky/include/asm/page.h:39:16: error: implicit declaration of function '_

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Date:   Thu, 2 Jun 2022 19:37:28 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [arm-integrator:kernel-in-vmalloc-v5.18-rc1 19/31]
 arch/csky/include/asm/page.h:39:16: error: implicit declaration of function
 '__pa'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.18-rc1
head:   9083f89a58302e92fad7f144986e307db2350aad
commit: bf753d367129134a4bea8e187e07645e88cb22f4 [19/31] csky: Make virt_to_pfn() a static inline
config: csky-defconfig (https://download.01.org/0day-ci/archive/20220602/202206021943.r7Mh4R1H-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=bf753d367129134a4bea8e187e07645e88cb22f4
        git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git
        git fetch --no-tags arm-integrator kernel-in-vmalloc-v5.18-rc1
        git checkout bf753d367129134a4bea8e187e07645e88cb22f4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=csky prepare

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from arch/csky/include/asm/thread_info.h:9,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/current.h:5,
                    from ./arch/csky/include/generated/asm/current.h:1,
                    from include/linux/sched.h:12,
                    from arch/csky/kernel/asm-offsets.c:4:
   arch/csky/include/asm/page.h: In function 'virt_to_pfn':
>> arch/csky/include/asm/page.h:39:16: error: implicit declaration of function '__pa' [-Werror=implicit-function-declaration]
      39 |         return __pa(kaddr) >> PAGE_SHIFT;
         |                ^~~~
   cc1: some warnings being treated as errors
   make[2]: *** [scripts/Makefile.build:120: arch/csky/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1194: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/__pa +39 arch/csky/include/asm/page.h

    36	
    37	static inline unsigned long virt_to_pfn(const void *kaddr)
    38	{
  > 39		return __pa(kaddr) >> PAGE_SHIFT;
    40	}
    41	

-- 
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https://01.org/lkp