[frank-w-bpi-r2-4.14:7.1-rc 142/162] drivers/net/ethernet/mediatek/mtk_eth_dbg.c:435:31: sparse: sparse: Using plain integer as NULL pointer

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

Hi Frank,

First bad commit (maybe != root cause):

tree:   https://github.com/frank-w/BPI-R2-4.14 7.1-rc
head:   12aaea139e45ed0d826a63a866c1ce03d352fea6
commit: 50fc35bec984b372f0d6e9253a7f4104edbef12d [142/162] lro-debugfs: some fixes
config: sparc-randconfig-r123-20260509 (https://download.01.org/0day-ci/archive/20260510/202605101350.3xRKu2Xl-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 8.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260510/202605101350.3xRKu2Xl-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/202605101350.3xRKu2Xl-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:33:5: sparse: sparse: symbol 'hw_lro_agg_num_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:34:5: sparse: sparse: symbol 'hw_lro_agg_size_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:35:5: sparse: sparse: symbol 'hw_lro_tot_agg_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:36:5: sparse: sparse: symbol 'hw_lro_tot_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:37:5: sparse: sparse: symbol 'hw_lro_agg_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:38:5: sparse: sparse: symbol 'hw_lro_age_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:39:5: sparse: sparse: symbol 'hw_lro_seq_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:40:5: sparse: sparse: symbol 'hw_lro_timestamp_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:41:5: sparse: sparse: symbol 'hw_lro_norule_flush_cnt' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:42:5: sparse: sparse: symbol 'mtk_hwlro_stats_ebl' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:43:5: sparse: sparse: symbol 'dbg_show_level' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:54:16: sparse: sparse: symbol 'g_eth' was not declared. Should it be static?
>> drivers/net/ethernet/mediatek/mtk_eth_dbg.c:435:31: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:1075:48: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:1132:48: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:1420:49: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:2047:23: sparse: sparse: symbol 'proc_reg_dir' was not declared. Should it be static?
   drivers/net/ethernet/mediatek/mtk_eth_dbg.c:2130:48: sparse: sparse: Using plain integer as NULL pointer

vim +435 drivers/net/ethernet/mediatek/mtk_eth_dbg.c

3d7587812f1f0f Frank Wunderlich 2025-01-15  431  
3d7587812f1f0f Frank Wunderlich 2025-01-15  432  static int mtketh_debug_show(struct seq_file *m, void *private)
3d7587812f1f0f Frank Wunderlich 2025-01-15  433  {
3d7587812f1f0f Frank Wunderlich 2025-01-15  434  	struct mtk_eth *eth = m->private;
3d7587812f1f0f Frank Wunderlich 2025-01-15 @435  	struct mtk_mac *mac = 0;
3d7587812f1f0f Frank Wunderlich 2025-01-15  436  	int  i = 0;
3d7587812f1f0f Frank Wunderlich 2025-01-15  437  
3d7587812f1f0f Frank Wunderlich 2025-01-15  438  	for (i = 0 ; i < MTK_MAX_DEVS ; i++) {
3d7587812f1f0f Frank Wunderlich 2025-01-15  439  		if (!eth->mac[i] ||
3d7587812f1f0f Frank Wunderlich 2025-01-15  440  		    of_phy_is_fixed_link(eth->mac[i]->of_node))
3d7587812f1f0f Frank Wunderlich 2025-01-15  441  			continue;
3d7587812f1f0f Frank Wunderlich 2025-01-15  442  		mac = eth->mac[i];
3d7587812f1f0f Frank Wunderlich 2025-01-15  443  /* FIXME */
3d7587812f1f0f Frank Wunderlich 2025-01-15  444  /*
3d7587812f1f0f Frank Wunderlich 2025-01-15  445  		while (j < 30) {
3d7587812f1f0f Frank Wunderlich 2025-01-15  446  			d =  _mtk_mdio_read_c22(eth, mac->phy_dev->addr, j);
3d7587812f1f0f Frank Wunderlich 2025-01-15  447  
3d7587812f1f0f Frank Wunderlich 2025-01-15  448  			seq_printf(m, "phy=%d, reg=0x%08x, data=0x%08x\n",
3d7587812f1f0f Frank Wunderlich 2025-01-15  449  				   mac->phy_dev->addr, j, d);
3d7587812f1f0f Frank Wunderlich 2025-01-15  450  			j++;
3d7587812f1f0f Frank Wunderlich 2025-01-15  451  		}
3d7587812f1f0f Frank Wunderlich 2025-01-15  452  */
3d7587812f1f0f Frank Wunderlich 2025-01-15  453  	}
3d7587812f1f0f Frank Wunderlich 2025-01-15  454  	return 0;
3d7587812f1f0f Frank Wunderlich 2025-01-15  455  }
3d7587812f1f0f Frank Wunderlich 2025-01-15  456  

:::::: The code at line 435 was first introduced by commit
:::::: 3d7587812f1f0f35408e7efbf4bf78cbe5b07ec3 net: mediatek: add proprietary debugfs

:::::: TO: Frank Wunderlich <frank-w@public-files.de>
:::::: CC: Frank Wunderlich <frank-w@public-files.de>

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