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* [arm-integrator:kernel-in-vmalloc-v6.2-rc3-just-ttbr0-split-pointless-c13 15/31] arch/mips/include/asm/page.h:262:33: error: call to undeclared function 'virt_to_phys'; ISO C99 and later do not support implicit function declarations
@ 2023-03-14 13:00 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-03-14 13:00 UTC (permalink / raw)
  To: Linus Walleij; +Cc: llvm, oe-kbuild-all

Hi Linus,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v6.2-rc3-just-ttbr0-split-pointless-c13
head:   961fd7e75191ae82383f80c1dfd97559f14965b8
commit: 44341c79c6d4883399b157f99b4e78d207049f4d [15/31] MIPS: Make virt_to_pfn() a static inline
config: mips-randconfig-r022-20230312 (https://download.01.org/0day-ci/archive/20230314/202303142032.7aN9ep2c-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=44341c79c6d4883399b157f99b4e78d207049f4d
        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-v6.2-rc3-just-ttbr0-split-pointless-c13
        git checkout 44341c79c6d4883399b157f99b4e78d207049f4d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303142032.7aN9ep2c-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:14:
   In file included from include/linux/sem.h:5:
   In file included from include/uapi/linux/sem.h:5:
   In file included from include/linux/ipc.h:5:
   In file included from include/linux/spinlock.h:65:
   In file included from arch/mips/include/asm/mmiowb.h:5:
   In file included from arch/mips/include/asm/io.h:29:
>> arch/mips/include/asm/page.h:262:33: error: call to undeclared function 'virt_to_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
                                          ^
   arch/mips/include/asm/page.h:262:33: note: did you mean 'virt_to_pfn'?
   arch/mips/include/asm/page.h:255:29: note: 'virt_to_pfn' declared here
   static inline unsigned long virt_to_pfn(const volatile void *kaddr)
                               ^
   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:14:
   In file included from include/linux/sem.h:5:
   In file included from include/uapi/linux/sem.h:5:
   In file included from include/linux/ipc.h:5:
   In file included from include/linux/spinlock.h:65:
   In file included from arch/mips/include/asm/mmiowb.h:5:
>> arch/mips/include/asm/io.h:114:27: error: static declaration of 'virt_to_phys' follows non-static declaration
   static inline phys_addr_t virt_to_phys(const volatile void *x)
                             ^
   arch/mips/include/asm/page.h:262:33: note: previous implicit declaration is here
           return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
                                          ^
   arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for function 'output_ptreg_defines' [-Wmissing-prototypes]
   void output_ptreg_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_ptreg_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for function 'output_task_defines' [-Wmissing-prototypes]
   void output_task_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_task_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for function 'output_thread_info_defines' [-Wmissing-prototypes]
   void output_thread_info_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:92:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_info_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for function 'output_thread_defines' [-Wmissing-prototypes]
   void output_thread_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:108:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:136:6: warning: no previous prototype for function 'output_thread_fpu_defines' [-Wmissing-prototypes]
   void output_thread_fpu_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:136:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_fpu_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for function 'output_mm_defines' [-Wmissing-prototypes]
   void output_mm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_mm_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:213:6: warning: no previous prototype for function 'output_sc_defines' [-Wmissing-prototypes]
   void output_sc_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:213:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_sc_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:248:6: warning: no previous prototype for function 'output_signal_defined' [-Wmissing-prototypes]
   void output_signal_defined(void)
        ^
   arch/mips/kernel/asm-offsets.c:248:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_signal_defined(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:341:6: warning: no previous prototype for function 'output_kvm_defines' [-Wmissing-prototypes]
   void output_kvm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:341:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_kvm_defines(void)
   ^
   static 
   9 warnings and 2 errors generated.
   make[2]: *** [scripts/Makefile.build:114: arch/mips/kernel/asm-offsets.s] Error 1
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:1286: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:242: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/virt_to_phys +262 arch/mips/include/asm/page.h

   254	
   255	static inline unsigned long virt_to_pfn(const volatile void *kaddr)
   256	{
   257		/*
   258		 * MIPS virt_to_phys() returns a phys_addr_t which is
   259		 * an unsigned int on MIPS, but the interface expects
   260		 * unsigned long.
   261		 */
 > 262		return (unsigned long)PFN_DOWN(virt_to_phys(kaddr));
   263	}
   264	#define virt_to_page(kaddr)	pfn_to_page(virt_to_pfn(kaddr))
   265	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

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2023-03-14 13:00 [arm-integrator:kernel-in-vmalloc-v6.2-rc3-just-ttbr0-split-pointless-c13 15/31] arch/mips/include/asm/page.h:262:33: error: call to undeclared function 'virt_to_phys'; ISO C99 and later do not support implicit function declarations kernel test robot

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