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Message-ID: <202007280056.OcpsOhB7%lkp@intel.com>
Date:   Tue, 28 Jul 2020 00:50:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Ooi, Joyce" <joyce.ooi@...el.com>,
        Thor Thayer <thor.thayer@...ux.intel.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     kbuild-all@...ts.01.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Dalon Westergreen <dalon.westergreen@...ux.intel.com>,
        Joyce Ooi <joyce.ooi@...el.com>,
        Tan Ley Foon <ley.foon.tan@...el.com>,
        See Chin Liang <chin.liang.see@...el.com>,
        Dinh Nguyen <dinh.nguyen@...el.com>
Subject: Re: [PATCH v5 08/10] net: eth: altera: add support for ptp and
 timestamping

Hi Joyce",

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on net/master robh/for-next linus/master v5.8-rc7 next-20200727]
[cannot apply to sparc-next/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Ooi-Joyce/net-eth-altera-tse-Add-PTP-and-mSGDMA-prefetcher/20200727-173217
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git a57066b1a01977a646145f4ce8dfb4538b08368a
config: nios2-randconfig-s032-20200727 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-94-geb6779f6-dirty
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=nios2 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

>> drivers/net/ethernet/altera/intel_fpga_tod.c:334:55: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/altera/intel_fpga_tod.c: note: in included file (through arch/nios2/include/asm/io.h, include/linux/io.h, arch/nios2/include/asm/pgtable.h, ...):
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:225:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:225:22: sparse:     got restricted __le32 [usertype]

vim +334 drivers/net/ethernet/altera/intel_fpga_tod.c

   306	
   307	/* Common PTP probe function */
   308	int intel_fpga_tod_probe(struct platform_device *pdev,
   309				 struct intel_fpga_tod_private *priv)
   310	{
   311		struct resource *ptp_res;
   312		int ret = -ENODEV;
   313	
   314		priv->dev = (struct net_device *)platform_get_drvdata(pdev);
   315	
   316		/* Time-of-Day (ToD) Clock address space */
   317		ret = request_and_map(pdev, "tod_ctrl", &ptp_res,
   318				      (void __iomem **)&priv->tod_ctrl);
   319		if (ret)
   320			goto err;
   321	
   322		dev_info(&pdev->dev, "\tTOD Ctrl at 0x%08lx\n",
   323			 (unsigned long)ptp_res->start);
   324	
   325		/* Time-of-Day (ToD) Clock period clock */
   326		priv->tod_clk = devm_clk_get(&pdev->dev, "tod_clk");
   327		if (IS_ERR(priv->tod_clk)) {
   328			dev_err(&pdev->dev, "cannot obtain ToD period clock\n");
   329			ret = -ENXIO;
   330			goto err;
   331		}
   332	
   333		/* Initialize the hardware clock to zero */
 > 334		intel_fpga_tod_set_time(&priv->ptp_clock_ops, 0);
   335	
   336		spin_lock_init(&priv->tod_lock);
   337	err:
   338		return ret;
   339	}
   340	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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