[alsa-devel] [asoc:for-5.5 2/32] sound/soc/fsl/fsl_mqs.c:182:38: sparse: sparse: Using plain integer as NULL pointer

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5
head:   1a476abc723e644248dba975b71122fcf878703b
commit: 9e28f6532c611c0c3fa759d2101aba9f0d41e860 [2/32] ASoC: fsl_mqs: Add MQS component driver
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-rc1-37-gd466a02-dirty
        git checkout 9e28f6532c611c0c3fa759d2101aba9f0d41e860
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp at intel.com>


sparse warnings: (new ones prefixed by >>)

>> sound/soc/fsl/fsl_mqs.c:182:38: sparse: sparse: Using plain integer as NULL pointer

vim +182 sound/soc/fsl/fsl_mqs.c

   178	
   179	static int fsl_mqs_probe(struct platform_device *pdev)
   180	{
   181		struct device_node *np = pdev->dev.of_node;
 > 182		struct device_node *gpr_np = 0;
   183		struct fsl_mqs *mqs_priv;
   184		void __iomem *regs;
   185		int ret = 0;
   186	
   187		mqs_priv = devm_kzalloc(&pdev->dev, sizeof(*mqs_priv), GFP_KERNEL);
   188		if (!mqs_priv)
   189			return -ENOMEM;
   190	
   191		/* On i.MX6sx the MQS control register is in GPR domain
   192		 * But in i.MX8QM/i.MX8QXP the control register is moved
   193		 * to its own domain.
   194		 */
   195		if (of_device_is_compatible(np, "fsl,imx8qm-mqs"))
   196			mqs_priv->use_gpr = false;
   197		else
   198			mqs_priv->use_gpr = true;
   199	
   200		if (mqs_priv->use_gpr) {
   201			gpr_np = of_parse_phandle(np, "gpr", 0);
   202			if (IS_ERR(gpr_np)) {
   203				dev_err(&pdev->dev, "failed to get gpr node by phandle\n");
   204				ret = PTR_ERR(gpr_np);
   205				goto out;
   206			}
   207	
   208			mqs_priv->regmap = syscon_node_to_regmap(gpr_np);
   209			if (IS_ERR(mqs_priv->regmap)) {
   210				dev_err(&pdev->dev, "failed to get gpr regmap\n");
   211				ret = PTR_ERR(mqs_priv->regmap);
   212				goto out;
   213			}
   214		} else {
   215			regs = devm_platform_ioremap_resource(pdev, 0);
   216			if (IS_ERR(regs))
   217				return PTR_ERR(regs);
   218	
   219			mqs_priv->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
   220								     "core",
   221								     regs,
   222								     &fsl_mqs_regmap_config);
   223			if (IS_ERR(mqs_priv->regmap)) {
   224				dev_err(&pdev->dev, "failed to init regmap: %ld\n",
   225					PTR_ERR(mqs_priv->regmap));
   226				return PTR_ERR(mqs_priv->regmap);
   227			}
   228	
   229			mqs_priv->ipg = devm_clk_get(&pdev->dev, "core");
   230			if (IS_ERR(mqs_priv->ipg)) {
   231				dev_err(&pdev->dev, "failed to get the clock: %ld\n",
   232					PTR_ERR(mqs_priv->ipg));
   233				goto out;
   234			}
   235		}
   236	
   237		mqs_priv->mclk = devm_clk_get(&pdev->dev, "mclk");
   238		if (IS_ERR(mqs_priv->mclk)) {
   239			dev_err(&pdev->dev, "failed to get the clock: %ld\n",
   240				PTR_ERR(mqs_priv->mclk));
   241			goto out;
   242		}
   243	
   244		dev_set_drvdata(&pdev->dev, mqs_priv);
   245		pm_runtime_enable(&pdev->dev);
   246	
   247		return devm_snd_soc_register_component(&pdev->dev, &soc_codec_fsl_mqs,
   248				&fsl_mqs_dai, 1);
   249	out:
   250		if (!IS_ERR(gpr_np))
   251			of_node_put(gpr_np);
   252	
   253		return ret;
   254	}
   255	

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