[frank-w-bpi-r2-4.14:7.1-rc 78/154] drivers/net/ethernet/mediatek/mtk_eth_soc.c:5638:6: warning: variable 'flags' set but not used

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

tree:   https://github.com/frank-w/BPI-R2-4.14 7.1-rc
head:   767536110bfe28c94ae2e150c083d29f827655cf
commit: 188fbd9a282fbed6a7a43430ab5d611dacfee1c5 [78/154] net: pcs: mtk-lynxi: add phya tx rx clock path
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20260515/202605150545.i950eo4c-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260515/202605150545.i950eo4c-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/202605150545.i950eo4c-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/mediatek/mtk_eth_soc.c:5638:6: warning: variable 'flags' set but not used [-Wunused-but-set-variable]
    5638 |         u32 flags = 0;
         |             ^
   1 warning generated.


vim +/flags +5638 drivers/net/ethernet/mediatek/mtk_eth_soc.c

  5633	
  5634	static int mtk_sgmii_init(struct mtk_eth *eth)
  5635	{
  5636		struct device_node *np;
  5637		struct regmap *regmap;
> 5638		u32 flags = 0;
  5639		int i;
  5640	
  5641		for (i = 0; i < MTK_MAX_DEVS; i++) {
  5642			np = of_parse_phandle(eth->dev->of_node, "mediatek,sgmiisys", i);
  5643			if (!np)
  5644				break;
  5645	
  5646			regmap = syscon_node_to_regmap(np);
  5647			if (IS_ERR(regmap)) {
  5648				of_node_put(np);
  5649	
  5650			if (of_property_read_bool(np->parent, "mediatek,phya_trx_ck"))
  5651				flags |= MTK_SGMII_FLAG_PHYA_TRX_CK;
  5652	
  5653			of_node_put(np);
  5654	
  5655			if (IS_ERR(regmap))
  5656				return PTR_ERR(regmap);
  5657			}
  5658	
  5659			eth->sgmii_pcs[i] = mtk_pcs_lynxi_create(eth->dev,
  5660								 of_fwnode_handle(np),
  5661								 regmap,
  5662								 eth->soc->ana_rgc3);
  5663			of_node_put(np);
  5664		}
  5665	
  5666		return 0;
  5667	}
  5668	

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