[avpatel:riscv_sbi_nested_v1 35/76] arch/riscv/include/asm/acpi.h:80:5: warning: no previous prototype for function 'acpi_get_riscv_isa'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/avpatel/linux.git riscv_sbi_nested_v1
head:   27e6109638389f74b42fe02858caa9c7a381cbbe
commit: db4952f58ebd70e99ec95af6c8139e52f809a32a [35/76] RISC-V: ACPI: cpufeature: Add ACPI support in riscv_fill_hwcap()
config: riscv-randconfig-r042-20230205 (https://download.01.org/0day-ci/archive/20230205/202302051225.nfhpRrql-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/avpatel/linux/commit/db4952f58ebd70e99ec95af6c8139e52f809a32a
        git remote add avpatel https://github.com/avpatel/linux.git
        git fetch --no-tags avpatel riscv_sbi_nested_v1
        git checkout db4952f58ebd70e99ec95af6c8139e52f809a32a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/

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

All warnings (new ones prefixed by >>):

   In file included from arch/riscv/kernel/cpufeature.c:16:
>> arch/riscv/include/asm/acpi.h:80:5: warning: no previous prototype for function 'acpi_get_riscv_isa' [-Wmissing-prototypes]
   int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa)
       ^
   arch/riscv/include/asm/acpi.h:80:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa)
   ^
   static 
   1 warning generated.


vim +/acpi_get_riscv_isa +80 arch/riscv/include/asm/acpi.h

f6ce6a00404b8e Sunil V L 2023-01-30  67  
d8a08750a4fecf Sunil V L 2023-01-30  68  struct acpi_madt_rintc *acpi_get_madt_rintc(int cpu);
d8a08750a4fecf Sunil V L 2023-01-30  69  struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu);
d8a08750a4fecf Sunil V L 2023-01-30  70  static inline u32 get_acpi_id_for_cpu(int cpu)
d8a08750a4fecf Sunil V L 2023-01-30  71  {
d8a08750a4fecf Sunil V L 2023-01-30  72  	return	acpi_cpu_get_madt_rintc(cpu)->uid;
d8a08750a4fecf Sunil V L 2023-01-30  73  }
04edd69e833b9d Sunil V L 2023-01-30  74  int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa);
d8a08750a4fecf Sunil V L 2023-01-30  75  #else
d8a08750a4fecf Sunil V L 2023-01-30  76  static inline u32 get_acpi_id_for_cpu(int cpu)
d8a08750a4fecf Sunil V L 2023-01-30  77  {
d8a08750a4fecf Sunil V L 2023-01-30  78  	return -1;
d8a08750a4fecf Sunil V L 2023-01-30  79  }
04edd69e833b9d Sunil V L 2023-01-30 @80  int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa)
04edd69e833b9d Sunil V L 2023-01-30  81  {
04edd69e833b9d Sunil V L 2023-01-30  82  	return -1;
04edd69e833b9d Sunil V L 2023-01-30  83  }
d8a08750a4fecf Sunil V L 2023-01-30  84  

:::::: The code at line 80 was first introduced by commit
:::::: 04edd69e833b9da8cbae5866214e4891626072ae ACPI: RISC-V: drivers/acpi: Add RHCT related code

:::::: TO: Sunil V L <sunilvl@ventanamicro.com>
:::::: CC: Anup Patel <anup@brainfault.org>

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