[esmil:vsrv 4/7] drivers/net/ethernet/vlsi/vlsi-mac.c:202:9: sparse: sparse: incorrect type in argument 2 (different address spaces)

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

tree:   https://github.com/esmil/linux vsrv
head:   58e54ef4640355003af8e733da39cafa53ad38a9
commit: 17e17550692a1c7e7c8b2c8ddc155ccf02676e65 [4/7] net: vlsi: Add VLSI ethernet driver
config: sparc-randconfig-r121-20250807 (https://download.01.org/0day-ci/archive/20250807/202508072138.6KPhLRF4-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 15.1.0
reproduce: (https://download.01.org/0day-ci/archive/20250807/202508072138.6KPhLRF4-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/202508072138.6KPhLRF4-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/net/ethernet/vlsi/vlsi-mac.c:202:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem * @@
   drivers/net/ethernet/vlsi/vlsi-mac.c:202:9: sparse:     expected void const *
   drivers/net/ethernet/vlsi/vlsi-mac.c:202:9: sparse:     got void [noderef] __iomem *
>> drivers/net/ethernet/vlsi/vlsi-mac.c:214:38: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/net/ethernet/vlsi/vlsi-mac.c:554:50: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned int volatile [usertype] *rxbase @@     got void [noderef] __iomem * @@
   drivers/net/ethernet/vlsi/vlsi-mac.c:554:50: sparse:     expected unsigned int volatile [usertype] *rxbase
   drivers/net/ethernet/vlsi/vlsi-mac.c:554:50: sparse:     got void [noderef] __iomem *
>> drivers/net/ethernet/vlsi/vlsi-mac.c:805:49: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned int volatile [usertype] *txmem @@     got void [noderef] __iomem * @@
   drivers/net/ethernet/vlsi/vlsi-mac.c:805:49: sparse:     expected unsigned int volatile [usertype] *txmem
   drivers/net/ethernet/vlsi/vlsi-mac.c:805:49: sparse:     got void [noderef] __iomem *

vim +202 drivers/net/ethernet/vlsi/vlsi-mac.c

   192	
   193		struct device *dev = kobj_to_dev(kobj);
   194		struct vsrves01_private *db = dev_get_drvdata(dev);
   195	
   196		if (offset > 512)
   197			return -1;
   198	
   199		if (offset + size > 512)
   200			size = 512-offset;
   201	
 > 202		memcpy(buf, db->membase + offset, size);
   203	
   204		return size;
   205	}
   206	
   207	static ssize_t vsrves01_sysfs_set_regmem(struct file *file, struct kobject *kobj,
   208						 const struct bin_attribute *attr,
   209						 char *buf, loff_t offset,
   210						 size_t size)
   211	{
   212		struct device *dev = kobj_to_dev(kobj);
   213		struct vsrves01_private *db = dev_get_drvdata(dev);
 > 214		volatile uint32_t *ethmem = (void *)db->membase;
   215		int ret = 0;
   216	
   217		if (offset > 512)
   218			return -1;
   219	
   220		if (offset + size > 512)
   221			size = 512-offset;
   222	
   223		while (size > 0) {
   224			uint32_t value;
   225			uint32_t addr = (unsigned)offset >> 2;
   226			uint32_t oldvalue = ethmem[addr];
   227	
   228			memcpy(&value, buf, 4);
   229	
   230			//dprintk("RegMEM Write %d bytes, at 0x%x (0x%x) %x => %x\n", size, (unsigned)offset, addr, oldvalue, value);
   231			if (addr == 0 && ((oldvalue&~0x81) == (value&~0x81))) {
   232				ethmem[0] = value;
   233				ret += 4;
   234			} else if (addr >= 103 && addr < 120) {
   235				ethmem[addr] = value;
   236				ret += 4;
   237			} else {
   238				return ret;
   239			}
   240	
   241			buf += 4;
   242			offset +=4;
   243			size -=4;
   244		}
   245	
   246		return ret;
   247	}
   248	

-- 
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https://github.com/intel/lkp-tests/wiki