[android-common:android14-5.15 0/28] drivers/pci/endpoint/functions/pci-epf-vntb.c:600:45: sparse: sparse: Using plain integer as NULL pointer

[android-common:android14-5.15 0/28] drivers/pci/endpoint/functions/pci-epf-vntb.c:600:45: sparse: sparse: Using plain integer as NULL pointer

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android14-5.15
head:   ced98912a0d86b6d7c7365664b2df779bf159018
commit: e2b6ef72b7aea9d7d480d2df499bcd1c93247abb [0/28] PCI: endpoint: Support NTB transfer between RC and EP
config: i386-randconfig-061 (https://download.01.org/0day-ci/archive/20260718/202607180225.MLfLteW0-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260718/202607180225.MLfLteW0-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/202607180225.MLfLteW0-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/pci/endpoint/functions/pci-epf-vntb.c:542:17: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *mw_addr @@     got void * @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:542:17: sparse:     expected void [noderef] __iomem *mw_addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:542:17: sparse:     got void *
   drivers/pci/endpoint/functions/pci-epf-vntb.c:574:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void *addr @@     got void [noderef] __iomem *epf_db @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:574:41: sparse:     expected void *addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:574:41: sparse:     got void [noderef] __iomem *epf_db
>> drivers/pci/endpoint/functions/pci-epf-vntb.c:600:45: sparse: sparse: Using plain integer as NULL pointer
>> drivers/pci/endpoint/functions/pci-epf-vntb.c:985:16: sparse: sparse: symbol 'vpci_ops' was not declared. Should it be static?
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1089:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got struct epf_ntb_ctrl *reg @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1089:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1089:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1100:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got struct epf_ntb_ctrl *reg @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1100:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1100:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1111:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got struct epf_ntb_ctrl *reg @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1111:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1111:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1123:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got struct epf_ntb_ctrl *reg @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1123:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1123:33: sparse:     got struct epf_ntb_ctrl *reg

vim +600 drivers/pci/endpoint/functions/pci-epf-vntb.c

   580	
   581	/**
   582	 * epf_ntb_mw_bar_init() - Configure Memory window BARs
   583	 * @ntb: NTB device that facilitates communication between HOST and vHOST
   584	 *
   585	 */
   586	static int epf_ntb_mw_bar_init(struct epf_ntb *ntb)
   587	{
   588		int ret = 0;
   589		int i;
   590		u64 size;
   591		enum pci_barno barno;
   592		struct device *dev = &ntb->epf->dev;
   593	
   594		for (i = 0; i < ntb->num_mws; i++) {
   595			size = ntb->mws_size[i];
   596			barno = ntb->epf_ntb_bar[BAR_MW0 + i];
   597	
   598			ntb->epf->bar[barno].barno = barno;
   599			ntb->epf->bar[barno].size = size;
 > 600			ntb->epf->bar[barno].addr = 0;
   601			ntb->epf->bar[barno].phys_addr = 0;
   602			ntb->epf->bar[barno].flags |= upper_32_bits(size) ?
   603					PCI_BASE_ADDRESS_MEM_TYPE_64 :
   604					PCI_BASE_ADDRESS_MEM_TYPE_32;
   605	
   606			ret = pci_epc_set_bar(ntb->epf->epc,
   607					      ntb->epf->func_no,
   608					      ntb->epf->vfunc_no,
   609					      &ntb->epf->bar[barno]);
   610			if (ret) {
   611				dev_err(dev, "MW set failed\n");
   612				goto err_alloc_mem;
   613			}
   614	
   615			/* Allocate EPC outbound memory windows to vpci vntb device */
   616			ntb->vpci_mw_addr[i] = pci_epc_mem_alloc_addr(ntb->epf->epc,
   617								      &ntb->vpci_mw_phy[i],
   618								      size);
   619			if (!ntb->vpci_mw_addr[i]) {
   620				dev_err(dev, "Failed to allocate source address\n");
   621				goto err_alloc_mem;
   622			}
   623		}
   624	
   625		return ret;
   626	err_alloc_mem:
   627		return ret;
   628	}
   629	

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