Re: [PATCH] qcom: ice: Remove ice probe

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

Hi Seshu,

kernel test robot noticed the following build warnings:

[auto build test WARNING on v6.11]
[also build test WARNING on next-20240927]
[cannot apply to linus/master]
[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/Seshu-Madhavi-Puppala/qcom-ice-Remove-ice-probe/20240928-130818
base:   v6.11
patch link:    https://lore.kernel.org/r/20240928050456.27577-1-quic_spuppala%40quicinc.com
patch subject: [PATCH] qcom: ice: Remove ice probe
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20240929/202409290409.BkBQ6BVX-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240929/202409290409.BkBQ6BVX-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/202409290409.BkBQ6BVX-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/soc/qcom/ice.c: In function 'of_qcom_ice_get':
>> drivers/soc/qcom/ice.c:309:24: warning: returning 'long int' from a function with return type 'struct qcom_ice *' makes pointer from integer without a cast [-Wint-conversion]
     309 |                 return PTR_ERR(base);
         |                        ^~~~~~~~~~~~~


vim +309 drivers/soc/qcom/ice.c

   250	
   251	/**
   252	 * of_qcom_ice_get() - get an ICE instance from a DT node
   253	 * @dev: device pointer for the consumer device
   254	 *
   255	 * This function will provide an ICE instance either by creating one for the
   256	 * consumer device if its DT node provides the 'ice' reg range and the 'ice'
   257	 * clock (for legacy DT style). On the other hand, if consumer provides a
   258	 * phandle via 'qcom,ice' property to an ICE DT, the ICE instance will already
   259	 * be created and so this function will return that instead.
   260	 *
   261	 * Return: ICE pointer on success, NULL if there is no ICE data provided by the
   262	 * consumer or ERR_PTR() on error.
   263	 */
   264	struct qcom_ice *of_qcom_ice_get(struct device *dev)
   265	{
   266		struct platform_device *pdev = to_platform_device(dev);
   267		struct qcom_ice *ice;
   268		struct device_node *node;
   269		struct resource *res;
   270		void __iomem *base;
   271	
   272		if (!dev || !dev->of_node)
   273			return ERR_PTR(-ENODEV);
   274	
   275		/*
   276		 * In order to support legacy style devicetree bindings, we need
   277		 * to create the ICE instance using the consumer device and the reg
   278		 * range called 'ice' it provides.
   279		 */
   280		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ice");
   281		if (res) {
   282			base = devm_ioremap_resource(&pdev->dev, res);
   283			if (IS_ERR(base))
   284				return ERR_CAST(base);
   285	
   286			/* create ICE instance using consumer dev */
   287			return qcom_ice_create(&pdev->dev, base);
   288		}
   289	
   290		/*
   291		 * If the consumer node does not provider an 'ice' reg range
   292		 * (legacy DT binding), then it must at least provide a phandle
   293		 * to the ICE devicetree node, otherwise ICE is not supported.
   294		 */
   295		node = of_parse_phandle(dev->of_node, "qcom,ice", 0);
   296		if (!node)
   297			return NULL;
   298	
   299		pdev = of_find_device_by_node(node);
   300		if (!pdev) {
   301			dev_err(dev, "Cannot find device node %s\n", node->name);
   302			ice = ERR_PTR(-EPROBE_DEFER);
   303			goto out;
   304		}
   305	
   306		base = devm_platform_ioremap_resource(pdev, 0);
   307		if (IS_ERR(base)) {
   308			dev_warn(&pdev->dev, "ICE registers not found\n");
 > 309			return PTR_ERR(base);
   310		}
   311	
   312		ice = qcom_ice_create(&pdev->dev, base);
   313		if (!ice) {
   314			dev_err(dev, "Cannot get ice instance from %s\n",
   315				dev_name(&pdev->dev));
   316			platform_device_put(pdev);
   317			ice = ERR_PTR(-EPROBE_DEFER);
   318			goto out;
   319		}
   320	
   321		ice->link = device_link_add(dev, &pdev->dev, DL_FLAG_AUTOREMOVE_SUPPLIER);
   322		if (!ice->link) {
   323			dev_err(&pdev->dev,
   324				"Failed to create device link to consumer %s\n",
   325				dev_name(dev));
   326			platform_device_put(pdev);
   327			ice = ERR_PTR(-EINVAL);
   328		}
   329	
   330	out:
   331		of_node_put(node);
   332	
   333		return ice;
   334	}
   335	EXPORT_SYMBOL_GPL(of_qcom_ice_get);
   336	

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