tree: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git virt-to-pfn-v6.1-rc1 head: 1991cddd20a7836e10b20ed128b2e7b80cd42eef commit: 356dd000d1fd64c1684d641be37ea800868d8586 [15/20] MIPS: Make virt_to_pfn() a static inline config: mips-mtx1_defconfig compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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=356dd000d1fd64c1684d641be37ea800868d8586 git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git git fetch --no-tags arm-integrator virt-to-pfn-v6.1-rc1 git checkout 356dd000d1fd64c1684d641be37ea800868d8586 # 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 prepare If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot 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:118: arch/mips/kernel/asm-offsets.s] Error 1 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:1270: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:231: __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://01.org/lkp