[leon-rdma:rdma-next 17/75] drivers/infiniband/hw/bnxt_re/debugfs.h:34:33: error: fields must have a constant size: 'variable length array in structure' extension will never be supported

[leon-rdma:rdma-next 17/75] drivers/infiniband/hw/bnxt_re/debugfs.h:34:33: error: fields must have a constant size: 'variable length array in structure' extension will never be supported

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rdma-next
head:   10565c5cadcb629f7780d24dd351878de9f46db5
commit: a3c71713d9548f1a9ee141c7cfb35550c3487443 [17/75] RDMA/bnxt_re: Congestion control settings using debugfs hook
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250204/202502041505.33zAsiMp-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250204/202502041505.33zAsiMp-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/202502041505.33zAsiMp-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from drivers/infiniband/hw/bnxt_re/main.c:39:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/s390/include/asm/elf.h:181:
   In file included from arch/s390/include/asm/mmu_context.h:11:
   In file included from arch/s390/include/asm/pgalloc.h:18:
   In file included from include/linux/mm.h:2224:
   include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     504 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     505 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     511 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     512 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     524 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     525 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/infiniband/hw/bnxt_re/main.c:70:
>> drivers/infiniband/hw/bnxt_re/debugfs.h:34:44: warning: variable length array used [-Wvla]
      34 |         struct bnxt_re_cc_param        gen0_parms[BNXT_RE_CC_PARAM_GEN0];
         |                                                   ^~~~~~~~~~~~~~~~~~~~~
   drivers/infiniband/hw/bnxt_re/debugfs.h:24:31: note: expanded from macro 'BNXT_RE_CC_PARAM_GEN0'
      24 | #define BNXT_RE_CC_PARAM_GEN0   __ffs(CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INACTIVITY_CP)
         |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/infiniband/hw/bnxt_re/debugfs.h:34:33: error: fields must have a constant size: 'variable length array in structure' extension will never be supported
      34 |         struct bnxt_re_cc_param        gen0_parms[BNXT_RE_CC_PARAM_GEN0];
         |                                        ^
   4 warnings and 1 error generated.


vim +34 drivers/infiniband/hw/bnxt_re/debugfs.h

    32	
    33	struct bnxt_re_dbg_cc_config_params {
  > 34		struct bnxt_re_cc_param        gen0_parms[BNXT_RE_CC_PARAM_GEN0];

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