[jpirko-mlxsw:jiri_devel_linecards 14/27] include/linux/stddef.h:8:14: warning: passing argument 3 of '__nsim_dev_port_add' makes integer from pointer without a cast

[kernel test robot]

tree:   https://github.com/jpirko/linux_mlxsw jiri_devel_linecards
head:   4a0e7275ecdf8f8cfd4c1a2e9acd45f93f04c0df
commit: a4347ad737edaf74ab771e14854e259ef224ab1c [14/27] netdevsim: allow port objects to be linked with line cards
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20220324/202203240754.0XOFWwW1-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 11.2.0
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://github.com/jpirko/linux_mlxsw/commit/a4347ad737edaf74ab771e14854e259ef224ab1c
        git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw
        git fetch --no-tags jpirko-mlxsw jiri_devel_linecards
        git checkout a4347ad737edaf74ab771e14854e259ef224ab1c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash drivers/net/netdevsim/

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

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/kasan-checks.h:5,
                    from include/asm-generic/rwonce.h:26,
                    from ./arch/m68k/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:255,
                    from include/linux/build_bug.h:5,
                    from include/linux/container_of.h:5,
                    from include/linux/list.h:5,
                    from include/linux/wait.h:7,
                    from include/linux/wait_bit.h:8,
                    from include/linux/fs.h:6,
                    from include/linux/debugfs.h:15,
                    from drivers/net/netdevsim/dev.c:18:
   drivers/net/netdevsim/dev.c: In function 'nsim_esw_switchdev_enable':
>> include/linux/stddef.h:8:14: warning: passing argument 3 of '__nsim_dev_port_add' makes integer from pointer without a cast [-Wint-conversion]
       8 | #define NULL ((void *)0)
         |              ^~~~~~~~~~~
         |              |
         |              void *
   drivers/net/netdevsim/dev.c:638:43: note: in expansion of macro 'NULL'
     638 |                                           NULL, i);
         |                                           ^~~~
   drivers/net/netdevsim/dev.c:613:34: note: expected 'unsigned int' but argument is of type 'void *'
     613 |                     unsigned int port_index);
         |                     ~~~~~~~~~~~~~^~~~~~~~~~
   drivers/net/netdevsim/dev.c:637:23: error: too many arguments to function '__nsim_dev_port_add'
     637 |                 err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_VF,
         |                       ^~~~~~~~~~~~~~~~~~~
   drivers/net/netdevsim/dev.c:612:1: note: declared here
     612 | __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
         | ^~~~~~~~~~~~~~~~~~~
   drivers/net/netdevsim/dev.c:651:25: error: too many arguments to function '__nsim_dev_port_del'
     651 |                         __nsim_dev_port_del(nsim_dev_port, NULL, i);
         |                         ^~~~~~~~~~~~~~~~~~~
   drivers/net/netdevsim/dev.c:614:13: note: declared here
     614 | static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port);
         |             ^~~~~~~~~~~~~~~~~~~
   drivers/net/netdevsim/dev.c: At top level:
   drivers/net/netdevsim/dev.c:1393:12: error: conflicting types for '__nsim_dev_port_add'; have 'int(struct nsim_dev *, enum nsim_dev_port_type,  struct nsim_dev_linecard *, unsigned int)'
    1393 | static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
         |            ^~~~~~~~~~~~~~~~~~~
   drivers/net/netdevsim/dev.c:612:1: note: previous declaration of '__nsim_dev_port_add' with type 'int(struct nsim_dev *, enum nsim_dev_port_type,  unsigned int)'
     612 | __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
         | ^~~~~~~~~~~~~~~~~~~
>> drivers/net/netdevsim/dev.c:612:1: warning: '__nsim_dev_port_add' used but never defined


vim +/__nsim_dev_port_add +8 include/linux/stddef.h

^1da177e4c3f41 Linus Torvalds   2005-04-16  6  
^1da177e4c3f41 Linus Torvalds   2005-04-16  7  #undef NULL
^1da177e4c3f41 Linus Torvalds   2005-04-16 @8  #define NULL ((void *)0)
6e218287432472 Richard Knutsson 2006-09-30  9  

:::::: The code at line 8 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>

-- 
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