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

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Message-ID: <201510081812.sJm6ZLVH%fengguang.wu@intel.com>
Date:	Thu, 8 Oct 2015 18:45:37 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Ley Foon Tan <lftan@...era.com>
Cc:	kbuild-all@...org, Bjorn Helgaas <bhelgaas@...gle.com>,
	Russell King <linux@....linux.org.uk>,
	Marc Zyngier <marc.zyngier@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, Ley Foon Tan <lftan@...era.com>,
	lftan.linux@...il.com, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH v8 3/6] pci:host: Add Altera PCIe host controller driver

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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Download attachment ".config.gz" of type "application/octet-stream" (50062 bytes)