linux-kernel - drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:34:1: warning: no previous prototype for function 'mlx5_esw_indir_table

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Date:   Mon, 1 Mar 2021 06:14:27 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vlad Buslov <vladbu@...dia.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
        Dmytro Linkin <dlinkin@...dia.com>, Roi Dayan <roid@...dia.com>
Subject: drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:34:1:
 warning: no previous prototype for function 'mlx5_esw_indir_table_init'

Hi Vlad,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   06d5d309a3f17e32cd59926f391db1e1ea652184
commit: 34ca65352ddf2aaa094f4016369103c4c7b98958 net/mlx5: E-Switch, Indirect table infrastructure
date:   3 weeks ago
config: x86_64-randconfig-a001-20210301 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project b077d82b00d81934c7c27ac89dd8b0e7f448bded)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34ca65352ddf2aaa094f4016369103c4c7b98958
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 34ca65352ddf2aaa094f4016369103c4c7b98958
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c:41:
>> drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:34:1: warning: no previous prototype for function 'mlx5_esw_indir_table_init' [-Wmissing-prototypes]
   mlx5_esw_indir_table_init(void)
   ^
   drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:33:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct mlx5_esw_indir_table *
   ^
   static 
>> drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:40:1: warning: no previous prototype for function 'mlx5_esw_indir_table_destroy' [-Wmissing-prototypes]
   mlx5_esw_indir_table_destroy(struct mlx5_esw_indir_table *indir)
   ^
   drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:39:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void
   ^
   static 
>> drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:61:1: warning: no previous prototype for function 'mlx5_esw_indir_table_needed' [-Wmissing-prototypes]
   mlx5_esw_indir_table_needed(struct mlx5_eswitch *esw,
   ^
   drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h:60:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool
   ^
   static 
   3 warnings generated.


vim +/mlx5_esw_indir_table_init +34 drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.h

    30	
    31	#else
    32	/* indir API stubs */
    33	struct mlx5_esw_indir_table *
  > 34	mlx5_esw_indir_table_init(void)
    35	{
    36		return NULL;
    37	}
    38	
    39	void
  > 40	mlx5_esw_indir_table_destroy(struct mlx5_esw_indir_table *indir)
    41	{
    42	}
    43	
    44	static inline struct mlx5_flow_table *
    45	mlx5_esw_indir_table_get(struct mlx5_eswitch *esw,
    46				 struct mlx5_flow_attr *attr,
    47				 struct mlx5_flow_spec *spec,
    48				 u16 vport, bool decap)
    49	{
    50		return ERR_PTR(-EOPNOTSUPP);
    51	}
    52	
    53	static inline void
    54	mlx5_esw_indir_table_put(struct mlx5_eswitch *esw,
    55				 struct mlx5_flow_attr *attr,
    56				 u16 vport, bool decap)
    57	{
    58	}
    59	
    60	bool
  > 61	mlx5_esw_indir_table_needed(struct mlx5_eswitch *esw,
    62				    struct mlx5_flow_attr *attr,
    63				    u16 vport_num,
    64				    struct mlx5_core_dev *dest_mdev)
    65	{
    66		return false;
    67	}
    68	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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