[PATCH v2 5/8] phy: phy-snps-eusb2: make repeater optional

[kernel test robot]

Hi Ivaylo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v6.14-rc4 next-20250228]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ivaylo-Ivanov/dt-bindings-phy-rename-qcom-snps-eusb2-phy-binding-to-snps-eusb2-phy/20250223-202709
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20250223122227.725233-6-ivo.ivanov.ivanov1%40gmail.com
patch subject: [PATCH v2 5/8] phy: phy-snps-eusb2: make repeater optional
config: microblaze-randconfig-r123-20250302 (https://download.01.org/0day-ci/archive/20250302/202503020920.Kw0H8Acs-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20250302/202503020920.Kw0H8Acs-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503020920.Kw0H8Acs-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/phy/phy-snps-eusb2.c:464:59: sparse: sparse: Using plain integer as NULL pointer

vim +464 drivers/phy/phy-snps-eusb2.c

   398	
   399	static int snps_eusb2_hsphy_probe(struct platform_device *pdev)
   400	{
   401		struct device *dev = &pdev->dev;
   402		struct device_node *np = dev->of_node;
   403		struct snps_eusb2_hsphy *phy;
   404		struct phy_provider *phy_provider;
   405		struct phy *generic_phy;
   406		const struct snps_eusb2_phy_drvdata *drv_data;
   407		int ret, i;
   408		int num;
   409	
   410		phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
   411		if (!phy)
   412			return -ENOMEM;
   413	
   414		drv_data = of_device_get_match_data(dev);
   415		if (!drv_data)
   416			return -EINVAL;
   417		phy->data = drv_data;
   418	
   419		phy->base = devm_platform_ioremap_resource(pdev, 0);
   420		if (IS_ERR(phy->base))
   421			return PTR_ERR(phy->base);
   422	
   423		phy->phy_reset = devm_reset_control_get_exclusive(dev, NULL);
   424		if (IS_ERR(phy->phy_reset))
   425			return PTR_ERR(phy->phy_reset);
   426	
   427		phy->clks = devm_kcalloc(dev,
   428					 phy->data->num_clks,
   429					 sizeof(*phy->clks),
   430					 GFP_KERNEL);
   431		if (!phy->clks)
   432			return -ENOMEM;
   433	
   434		for (int i = 0; i < phy->data->num_clks; ++i)
   435			phy->clks[i].id = phy->data->clk_names[i];
   436	
   437		ret = devm_clk_bulk_get(dev, phy->data->num_clks,
   438					phy->clks);
   439		if (ret)
   440			return dev_err_probe(dev, ret,
   441					     "failed to get phy clock(s)\n");
   442	
   443		phy->ref_clk = NULL;
   444		for (int i = 0; i < phy->data->num_clks; ++i) {
   445			if (!strcmp(phy->clks[i].id, "ref")) {
   446				phy->ref_clk = phy->clks[i].clk;
   447				break;
   448			}
   449		}
   450	
   451		if (IS_ERR_OR_NULL(phy->ref_clk))
   452			return dev_err_probe(dev, PTR_ERR(phy->ref_clk),
   453					     "failed to get ref clk\n");
   454	
   455		num = ARRAY_SIZE(phy->vregs);
   456		for (i = 0; i < num; i++)
   457			phy->vregs[i].supply = eusb2_hsphy_vreg_names[i];
   458	
   459		ret = devm_regulator_bulk_get(dev, num, phy->vregs);
   460		if (ret)
   461			return dev_err_probe(dev, ret,
   462					     "failed to get regulator supplies\n");
   463	
 > 464		phy->repeater = devm_of_phy_optional_get(dev, np, 0);
   465		if (IS_ERR(phy->repeater))
   466			return dev_err_probe(dev, PTR_ERR(phy->repeater),
   467					     "failed to get repeater\n");
   468	
   469		generic_phy = devm_phy_create(dev, NULL, &snps_eusb2_hsphy_ops);
   470		if (IS_ERR(generic_phy)) {
   471			dev_err(dev, "failed to create phy %d\n", ret);
   472			return PTR_ERR(generic_phy);
   473		}
   474	
   475		dev_set_drvdata(dev, phy);
   476		phy_set_drvdata(generic_phy, phy);
   477	
   478		phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
   479		if (IS_ERR(phy_provider))
   480			return PTR_ERR(phy_provider);
   481	
   482		dev_info(dev, "Registered Snps-eUSB2 phy\n");
   483	
   484		return 0;
   485	}
   486	

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