[frank-w-bpi-r2-4.14:pr/188 1/1] drivers/net/ethernet/mediatek/mtk_eth_dbg.c:435:31: sparse: sparse: Using plain integer as NULL pointer

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

tree:   https://github.com/frank-w/BPI-R2-4.14 pr/188
head:   616866fe35b03d003aa74b684a16a24a9e119e2a
commit: f6261a83d9f211b58713bae33b28f274b6454612 [1/1] net: mediatek: add proprietary debugfs
config: microblaze-randconfig-r123-20260629 (https://download.01.org/0day-ci/archive/20260630/202606301109.cKGVgXgK-lkp@intel.com/config)
compiler: microblaze-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/20260630/202606301109.cKGVgXgK-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/202606301109.cKGVgXgK-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?

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

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

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