Re: [PATCH v2 11/28] coresight: Populate CPU ID into the coresight_device structure

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

Hi Leo,

kernel test robot noticed the following build errors:

[auto build test ERROR on 66701750d5565c574af42bef0b789ce0203e3071]

url:    https://github.com/intel-lab-lkp/linux/commits/Leo-Yan/coresight-Change-device-mode-to-atomic-type/20250701-230354
base:   66701750d5565c574af42bef0b789ce0203e3071
patch link:    https://lore.kernel.org/r/20250701-arm_cs_pm_fix_v3-v2-11-23ebb864fcc1%40arm.com
patch subject: [PATCH v2 11/28] coresight: Populate CPU ID into the coresight_device structure
config: arm-randconfig-004-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021422.Zj4Hv0CG-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021422.Zj4Hv0CG-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/202507021422.Zj4Hv0CG-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwtracing/coresight/coresight-dummy.c:182:11: error: incompatible integer to pointer conversion assigning to 'struct device *' from 'int' [-Wint-conversion]
     182 |         desc.dev = -1;
         |                  ^ ~~
   1 error generated.


vim +182 drivers/hwtracing/coresight/coresight-dummy.c

   113	
   114	static int dummy_probe(struct platform_device *pdev)
   115	{
   116		struct device *dev = &pdev->dev;
   117		struct device_node *node = dev->of_node;
   118		struct coresight_platform_data *pdata;
   119		struct dummy_drvdata *drvdata;
   120		struct coresight_desc desc = { 0 };
   121		int ret = 0, trace_id = 0;
   122	
   123		drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
   124		if (!drvdata)
   125			return -ENOMEM;
   126	
   127		if (of_device_is_compatible(node, "arm,coresight-dummy-source")) {
   128	
   129			desc.name = coresight_alloc_device_name(&source_devs, dev);
   130			if (!desc.name)
   131				return -ENOMEM;
   132	
   133			desc.type = CORESIGHT_DEV_TYPE_SOURCE;
   134			desc.subtype.source_subtype =
   135						CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS;
   136			desc.ops = &dummy_source_cs_ops;
   137			desc.groups = coresight_dummy_groups;
   138	
   139			ret = coresight_get_static_trace_id(dev, &trace_id);
   140			if (!ret) {
   141				/* Get the static id if id is set in device tree. */
   142				ret = coresight_trace_id_get_static_system_id(trace_id);
   143				if (ret < 0) {
   144					dev_err(dev, "Fail to get static id.\n");
   145					return ret;
   146				}
   147			} else {
   148				/* Get next available id if id is not set in device tree. */
   149				trace_id = coresight_trace_id_get_system_id();
   150				if (trace_id < 0) {
   151					ret = trace_id;
   152					return ret;
   153				}
   154			}
   155			drvdata->traceid = (u8)trace_id;
   156	
   157		} else if (of_device_is_compatible(node, "arm,coresight-dummy-sink")) {
   158			desc.name = coresight_alloc_device_name(&sink_devs, dev);
   159			if (!desc.name)
   160				return -ENOMEM;
   161	
   162			desc.type = CORESIGHT_DEV_TYPE_SINK;
   163			desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_DUMMY;
   164			desc.ops = &dummy_sink_cs_ops;
   165		} else {
   166			dev_err(dev, "Device type not set\n");
   167			return -EINVAL;
   168		}
   169	
   170		pdata = coresight_get_platform_data(dev);
   171		if (IS_ERR(pdata)) {
   172			ret = PTR_ERR(pdata);
   173			goto free_id;
   174		}
   175		pdev->dev.platform_data = pdata;
   176	
   177		drvdata->dev = &pdev->dev;
   178		platform_set_drvdata(pdev, drvdata);
   179	
   180		desc.pdata = pdev->dev.platform_data;
   181		desc.dev = &pdev->dev;
 > 182		desc.dev = -1;
   183		drvdata->csdev = coresight_register(&desc);
   184		if (IS_ERR(drvdata->csdev)) {
   185			ret = PTR_ERR(drvdata->csdev);
   186			goto free_id;
   187		}
   188	
   189		pm_runtime_enable(dev);
   190		dev_dbg(dev, "Dummy device initialized\n");
   191	
   192		ret = 0;
   193		goto out;
   194	
   195	free_id:
   196		if (IS_VALID_CS_TRACE_ID(drvdata->traceid))
   197			coresight_trace_id_put_system_id(drvdata->traceid);
   198	
   199	out:
   200		return ret;
   201	}
   202	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki