Re: [PATCH v8 3/6] pci:host: Add Altera PCIe host controller driver

[kbuild test robot]

Hi Ley,

[auto build test WARNING on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: x86_64-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/pci/host/pcie-altera.c: In function 'tlp_cfg_dword_read':
>> drivers/pci/host/pcie-altera.c:243:12: warning: large integer implicitly truncated to unsigned type [-Woverflow]
      *value = ~0UL; /* return 0xFFFFFFFF if error */
               ^
   drivers/pci/host/pcie-altera.c: In function 'altera_pcie_cfg_read':
   drivers/pci/host/pcie-altera.c:291:12: warning: large integer implicitly truncated to unsigned type [-Woverflow]
      *value = ~0UL;
               ^

vim +243 drivers/pci/host/pcie-altera.c

   227		int ret;
   228		u32 headers[TLP_HDR_SIZE];
   229	
   230		if (bus == pcie->root_bus_nr)
   231			headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGRD0);
   232		else
   233			headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGRD1);
   234	
   235		headers[1] = TLP_CFG_DW1(TLP_REQ_ID(pcie->root_bus_nr, devfn),
   236						TLP_READ_TAG);
   237		headers[2] = TLP_CFG_DW2(bus, devfn, where);
   238	
   239		tlp_write_packet(pcie, headers, 0, false);
   240	
   241		ret = tlp_read_packet(pcie, value);
   242		if (ret != PCIBIOS_SUCCESSFUL)
 > 243			*value = ~0UL;	/* return 0xFFFFFFFF if error */
   244	
   245		return ret;
   246	}
   247	
   248	static int tlp_cfg_dword_write(struct altera_pcie *pcie, u8 bus, u32 devfn,
   249				       int where, u32 value)
   250	{
   251		u32 headers[TLP_HDR_SIZE];

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