Re: [PATCHv2 net-next 1/3] bonding: add common function to check ipsec device

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

Hi Hangbin,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Hangbin-Liu/bonding-add-common-function-to-check-ipsec-device/20240819-195504
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240819075334.236334-2-liuhangbin%40gmail.com
patch subject: [PATCHv2 net-next 1/3] bonding: add common function to check ipsec device
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240820/202408200345.a4DQ8ecT-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240820/202408200345.a4DQ8ecT-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408200345.a4DQ8ecT-lkp@intel.com/

All errors (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:314,
                    from include/linux/array_size.h:5,
                    from include/linux/kernel.h:16,
                    from drivers/net/bonding/bond_main.c:35:
   drivers/net/bonding/bond_main.c: In function 'bond_ipsec_dev':
>> include/linux/stddef.h:8:14: error: incompatible types when returning type 'void *' but 'struct net_device' was expected
       8 | #define NULL ((void *)0)
         |              ^
   drivers/net/bonding/bond_main.c:434:24: note: in expansion of macro 'NULL'
     434 |                 return NULL;
         |                        ^~~~
>> include/linux/stddef.h:8:14: error: incompatible types when returning type 'void *' but 'struct net_device' was expected
       8 | #define NULL ((void *)0)
         |              ^
   drivers/net/bonding/bond_main.c:442:24: note: in expansion of macro 'NULL'
     442 |                 return NULL;
         |                        ^~~~
>> drivers/net/bonding/bond_main.c:446:16: error: incompatible types when returning type 'struct net_device *' but 'struct net_device' was expected
     446 |         return real_dev;
         |                ^~~~~~~~
   drivers/net/bonding/bond_main.c: In function 'bond_ipsec_offload_ok':
>> drivers/net/bonding/bond_main.c:630:20: error: incompatible types when assigning to type 'struct net_device *' from type 'struct net_device'
     630 |         real_dev = bond_ipsec_dev(xs);
         |                    ^~~~~~~~~~~~~~


vim +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  

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