Re: [PATCH v2 18/18] bitops: Add parity() macro for automatic type-based selection

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

Hi Kuan-Wei,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20250228]
[cannot apply to akpm-mm/mm-nonmm-unstable dtor-input/next dtor-input/for-linus tty/tty-testing tty/tty-next tty/tty-linus wireless-next/main wireless/main mtd/mtd/next mtd/mtd/fixes linus/master v6.14-rc4 v6.14-rc3 v6.14-rc2 v6.14-rc4]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuan-Wei-Chiu/lib-parity-Add-__builtin_parity-fallback-implementations/20250301-222957
base:   next-20250228
patch link:    https://lore.kernel.org/r/20250301142409.2513835-19-visitorckw%40gmail.com
patch subject: [PATCH v2 18/18] bitops: Add parity() macro for automatic type-based selection
config: x86_64-buildonly-randconfig-001-20250302 (https://download.01.org/0day-ci/archive/20250302/202503021043.2qaG7vXF-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250302/202503021043.2qaG7vXF-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/202503021043.2qaG7vXF-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c:13:
   In file included from include/drm/bridge/dw_hdmi.h:9:
   In file included from include/sound/hdmi-codec.h:16:
   In file included from include/sound/soc.h:26:
   In file included from include/sound/ac97_codec.h:17:
   In file included from include/sound/pcm.h:15:
   In file included from include/linux/mm.h:2287:
   include/linux/vmstat.h:493:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     493 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     494 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     500 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     501 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:507:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     507 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:513:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     513 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     514 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c:173:12: error: expected identifier or '('
     173 | static u32 parity(u32 sample)
         |            ^
   include/linux/bitops.h:343:2: note: expanded from macro 'parity'
     343 | ({                                      \
         |  ^
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c:173:12: error: expected ')'
   include/linux/bitops.h:343:2: note: expanded from macro 'parity'
     343 | ({                                      \
         |  ^
   drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c:173:12: note: to match this '('
   include/linux/bitops.h:342:23: note: expanded from macro 'parity'
     342 | #define parity(val)                     \
         |                                         ^
   4 warnings and 2 errors generated.


vim +173 drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c

7ed6c665e19d4c drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c          Russell King  2013-11-07  172  
7ed6c665e19d4c drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c          Russell King  2013-11-07 @173  static u32 parity(u32 sample)
7ed6c665e19d4c drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c          Russell King  2013-11-07  174  {
251332255cc5da drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c Kuan-Wei Chiu 2025-03-01  175  	return parity32(sample) << 27;
7ed6c665e19d4c drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c          Russell King  2013-11-07  176  }
7ed6c665e19d4c drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c          Russell King  2013-11-07  177  

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