Subject: Re: [PATCH net-next 09/13] net: ibm: emac: rgmii: devm_platform_get_resource

From: kernel test robot <[email-masked]>
Date: Tue, 1 Oct 2024 17:06:18 +0800

Hi Rosen,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Rosen-Penev/net-ibm-emac-remove-custom-init-exit-functions/20241001-020553
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240930180036.87598-10-rosenp%40gmail.com
patch subject: [PATCH net-next 09/13] net: ibm: emac: rgmii: devm_platform_get_resource
config: powerpc-canyonlands_defconfig (https://download.01.org/0day-ci/archive/20241001/[email-masked]/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 7773243d9916f98ba0ffce0c3a960e4aa9f03e81)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241001/[email-masked]/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 <[email-masked]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email-masked]/

All errors (new ones prefixed by >>):

   In file included from drivers/net/ethernet/ibm/emac/rgmii.c:21:
   In file included from include/linux/ethtool.h:18:
   In file included from include/linux/if_ether.h:19:
   In file included from include/linux/skbuff.h:17:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:8:
   In file included from include/linux/cacheflush.h:5:
   In file included from arch/powerpc/include/asm/cacheflush.h:7:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> drivers/net/ethernet/ibm/emac/rgmii.c:229:14: error: call to undeclared function 'devm_platform_get_resource'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     229 |         dev->base = devm_platform_get_resource(ofdev, 0);
         |                     ^
   drivers/net/ethernet/ibm/emac/rgmii.c:229:14: note: did you mean 'platform_get_resource'?
   include/linux/platform_device.h:58:25: note: 'platform_get_resource' declared here
      58 | extern struct resource *platform_get_resource(struct platform_device *,
         |                         ^
>> drivers/net/ethernet/ibm/emac/rgmii.c:229:12: error: incompatible integer to pointer conversion assigning to 'struct rgmii_regs *' from 'int' [-Wint-conversion]
     229 |         dev->base = devm_platform_get_resource(ofdev, 0);
         |                   ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning and 2 errors generated.

vim +/devm_platform_get_resource +229 drivers/net/ethernet/ibm/emac/rgmii.c

   215	
   216	
   217	static int rgmii_probe(struct platform_device *ofdev)
   218	{
   219		struct rgmii_instance *dev;
   220	
   221		dev = devm_kzalloc(&ofdev->dev, sizeof(struct rgmii_instance),
   222				   GFP_KERNEL);
   223		if (!dev)
   224			return -ENOMEM;
   225	
   226		mutex_init(&dev->lock);
   227		dev->ofdev = ofdev;
   228	
 > 229		dev->base = devm_platform_get_resource(ofdev, 0);
   230		if (IS_ERR(dev->base)) {
   231			dev_err(&ofdev->dev, "can't map device registers");
   232			return PTR_ERR(dev->base);
   233		}
   234	
   235		/* Check for RGMII flags */
   236		if (of_property_read_bool(ofdev->dev.of_node, "has-mdio"))
   237			dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
   238	
   239		/* CAB lacks the right properties, fix this up */
   240		if (of_device_is_compatible(ofdev->dev.of_node, "ibm,rgmii-axon"))
   241			dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
   242	
   243		DBG2(dev, " Boot FER = 0x%08x, SSR = 0x%08x\n",
   244		     in_be32(&dev->base->fer), in_be32(&dev->base->ssr));
   245	
   246		/* Disable all inputs by default */
   247		out_be32(&dev->base->fer, 0);
   248	
   249		printk(KERN_INFO
   250		       "RGMII %pOF initialized with%s MDIO support\n",
   251		       ofdev->dev.of_node,
   252		       (dev->flags & EMAC_RGMII_FLAG_HAS_MDIO) ? "" : "out");
   253	
   254		wmb();
   255		platform_set_drvdata(ofdev, dev);
   256	
   257		return 0;
   258	}
   259	

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