Re: [PATCH v2 1/2] iio: magnetometer: add support for Infineon TLV493D 3D Magentic sensor

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

Hi Dixit,

kernel test robot noticed the following build errors:

[auto build test ERROR on d7b8f8e20813f0179d8ef519541a3527e7661d3a]

url:    https://github.com/intel-lab-lkp/linux/commits/Dixit-Parmar/iio-magnetometer-add-support-for-Infineon-TLV493D-3D-Magentic-sensor/20250802-144615
base:   d7b8f8e20813f0179d8ef519541a3527e7661d3a
patch link:    https://lore.kernel.org/r/20250802-tlv493d-sensor-v6_16-rc5-v2-1-e867df86ad93%40gmail.com
patch subject: [PATCH v2 1/2] iio: magnetometer: add support for Infineon TLV493D 3D Magentic sensor
config: um-allyesconfig (https://download.01.org/0day-ci/archive/20250807/202508070051.wZvtQr6x-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250807/202508070051.wZvtQr6x-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/202508070051.wZvtQr6x-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/x86/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:390,
                    from include/linux/build_bug.h:5,
                    from include/linux/bits.h:32,
                    from drivers/iio/magnetometer/tlv493d.c:8:
>> include/linux/stddef.h:8:14: error: positional initialization of field in 'struct' declared with 'designated_init' attribute [-Werror=designated-init]
       8 | #define NULL ((void *)0)
         |              ^
   drivers/iio/magnetometer/tlv493d.c:438:64: note: in expansion of macro 'NULL'
     438 | static const struct iio_buffer_setup_ops tlv493d_setup_ops = { NULL };
         |                                                                ^~~~
   include/linux/stddef.h:8:14: note: (near initialization for 'tlv493d_setup_ops')
       8 | #define NULL ((void *)0)
         |              ^
   drivers/iio/magnetometer/tlv493d.c:438:64: note: in expansion of macro 'NULL'
     438 | static const struct iio_buffer_setup_ops tlv493d_setup_ops = { NULL };
         |                                                                ^~~~
   cc1: some warnings being treated as errors


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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