Hi YANG,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on ipvs/master]
[also build test ERROR on linus/master sparc-next/master v5.11-rc1 next-20201223]
[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]

url:    https://github.com/0day-ci/linux/commits/YANG-LI/mlx4-style-replace-zero-length-array-with-flexible-array-member/20201230-143531
base:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/9ba529666d9d11ec16093f038c0d325ebad98b01
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review YANG-LI/mlx4-style-replace-zero-length-array-with-flexible-array-member/20201230-143531
        git checkout 9ba529666d9d11ec16093f038c0d325ebad98b01
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 

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

All errors (new ones prefixed by >>):

   In file included from drivers/net/ethernet/mellanox/mlx4/en_main.c:44:
>> drivers/net/ethernet/mellanox/mlx4/mlx4_en.h:316:27: error: flexible array member in a struct with no named members
     316 |  struct mlx4_wqe_data_seg data[];
         |                           ^~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FRAME_POINTER
   Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS
   Selected by
   - FAULT_INJECTION_STACKTRACE_FILTER && FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT && !X86_64 && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86


vim +316 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

   313	
   314	struct mlx4_en_rx_desc {
   315		/* actual number of entries depends on rx ring stride */
 > 316		struct mlx4_wqe_data_seg data[];
   317	};
   318	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org