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Date:   Sun, 5 Jun 2022 04:14:18 +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 26/34]
 arch/mips/include/asm/page.h:263:40: error: implicit declaration of function
 'virt_to_phys'; did you mean 'virt_to_pfn'?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.18-rc1
head:   1aafd4ba7b78b4ac0013a48a35252654852cb7ab
commit: 528ddc725d2f4c648357c9323487fb3f9a639cb6 [26/34] MIPS: Make virt_to_pfn() a static inline
config: mips-capcella_defconfig (https://download.01.org/0day-ci/archive/20220605/202206050448.4G8omwDM-lkp@intel.com/config)
compiler: mipsel-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=528ddc725d2f4c648357c9323487fb3f9a639cb6
        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 528ddc725d2f4c648357c9323487fb3f9a639cb6
        # 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=mips 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/mips/include/asm/page.h:74,
                    from arch/mips/include/asm/io.h:29,
                    from arch/mips/include/asm/mmiowb.h:5,
                    from include/linux/spinlock.h:64,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/mips/kernel/asm-offsets.c:12:
   arch/mips/include/asm/page.h: In function 'virt_to_pfn':
>> arch/mips/include/asm/page.h:263:40: error: implicit declaration of function 'virt_to_phys'; did you mean 'virt_to_pfn'? [-Werror=implicit-function-declaration]
     263 |         return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
         |                                        ^~~~~~~~~~~~
   include/linux/pfn.h:20:27: note: in definition of macro 'PFN_DOWN'
      20 | #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
         |                           ^
   In file included from arch/mips/include/asm/mmiowb.h:5,
                    from include/linux/spinlock.h:64,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/mips/kernel/asm-offsets.c:12:
   arch/mips/include/asm/io.h: At top level:
>> arch/mips/include/asm/io.h:114:27: error: conflicting types for 'virt_to_phys'; have 'phys_addr_t(const volatile void *)' {aka 'unsigned int(const volatile void *)'}
     114 | static inline phys_addr_t virt_to_phys(const volatile void *x)
         |                           ^~~~~~~~~~~~
   In file included from arch/mips/include/asm/page.h:74,
                    from arch/mips/include/asm/io.h:29,
                    from arch/mips/include/asm/mmiowb.h:5,
                    from include/linux/spinlock.h:64,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/mips/kernel/asm-offsets.c:12:
   arch/mips/include/asm/page.h:263:40: note: previous implicit declaration of 'virt_to_phys' with type 'int()'
     263 |         return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
         |                                        ^~~~~~~~~~~~
   include/linux/pfn.h:20:27: note: in definition of macro 'PFN_DOWN'
      20 | #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
         |                           ^
   arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes]
      26 | void output_ptreg_defines(void)
         |      ^~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes]
      78 | void output_task_defines(void)
         |      ^~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes]
      92 | void output_thread_info_defines(void)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes]
     108 | void output_thread_defines(void)
         |      ^~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:136:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes]
     136 | void output_thread_fpu_defines(void)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes]
     179 | void output_mm_defines(void)
         |      ^~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:218:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes]
     218 | void output_sc_defines(void)
         |      ^~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:253:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes]
     253 | void output_signal_defined(void)
         |      ^~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/asm-offsets.c:346:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes]
     346 | void output_kvm_defines(void)
         |      ^~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
   make[2]: *** [scripts/Makefile.build:120: arch/mips/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 +263 arch/mips/include/asm/page.h

   255	
   256	static inline unsigned long virt_to_pfn(const volatile void *kaddr)
   257	{
   258		/*
   259		 * MIPS virt_to_phys() returns a phys_addr_t which is
   260		 * an unsigned int on MIPS, but the interface expects
   261		 * unsigned long.
   262		 */
 > 263		return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
   264	}
   265	#define virt_to_page(kaddr)	pfn_to_page(virt_to_pfn(kaddr))
   266	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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