Hi Fan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 5e95c0a3a55aea490420bd6994805edb050cc86b]

url:    https://github.com/intel-lab-lkp/linux/commits/Fan-Gong/hinic3-Async-Event-Queue-interfaces/20250722-152434
base:   5e95c0a3a55aea490420bd6994805edb050cc86b
patch link:    https://lore.kernel.org/r/bea50c6c329c5ffb77cfe059e07eeed187619346.1753152592.git.zhuyikai1%40h-partners.com
patch subject: [PATCH net-next v10 1/8] hinic3: Async Event Queue interfaces
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20250723/202507231813.7ti3bdJj-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250723/202507231813.7ti3bdJj-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202507231813.7ti3bdJj-lkp@intel.com/ (local)

All warnings (new ones prefixed by >>):

quoted

drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:77:17: warning: variable 'cb_state' set but not used [-Wunused-but-set-variable]

      77 |         unsigned long *cb_state;
         |                        ^
   drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:91:17: warning: variable 'cb_state' set but not used [-Wunused-but-set-variable]
      91 |         unsigned long *cb_state;
         |                        ^
   drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:127:17: warning: variable 'cb_state' set but not used [-Wunused-but-set-variable]
     127 |         unsigned long *cb_state;
         |                        ^
   3 warnings generated.


vim +/cb_state +77 drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c

    71	
    72	int hinic3_aeq_register_cb(struct hinic3_hwdev *hwdev,
    73				   enum hinic3_aeq_type event,
    74				   hinic3_aeq_event_cb hwe_cb)
    75	{
    76		struct hinic3_aeqs *aeqs;
  > 77		unsigned long *cb_state;
    78	
    79		aeqs = hwdev->aeqs;
    80		cb_state = &aeqs->aeq_cb_state[event];
    81		aeqs->aeq_cb[event] = hwe_cb;
    82		spin_lock_init(&aeqs->aeq_lock);
    83	
    84		return 0;
    85	}
    86	

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https://github.com/intel/lkp-tests/wiki