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Message-ID: <202111151454.5Se8cT59-lkp@intel.com>
Date:   Mon, 15 Nov 2021 14:39:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Moritz Fischer <mdf@...nel.org>,
        Matthew Gerlach <matthew.gerlach@...ux.intel.com>,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
        Xu Yilun <yilun.xu@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v1 1/1] fpga: dfl: pci: Use pci_find_vsec_capability()
 when looking for DFL

Hi Andy,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.16-rc1 next-20211115]
[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/Andy-Shevchenko/fpga-dfl-pci-Use-pci_find_vsec_capability-when-looking-for-DFL/20211109-234228
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git d2f38a3c6507b2520101f9a3807ed98f1bdc545a
config: i386-randconfig-a014-20211115 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/dfc10076ac7a63331954a33cabf94a1af3632210
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Andy-Shevchenko/fpga-dfl-pci-Use-pci_find_vsec_capability-when-looking-for-DFL/20211109-234228
        git checkout dfc10076ac7a63331954a33cabf94a1af3632210
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   drivers/fpga/dfl-pci.c:146:34: error: use of undeclared identifier 'dev'
           voff = pci_find_vsec_capability(dev, PCI_VENDOR_ID_INTEL, PCI_VSEC_ID_INTEL_DFLS);
                                           ^
>> drivers/fpga/dfl-pci.c:350:32: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
                                         ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/fpga/dfl-pci.c:351:45: warning: shift count >= width of type [-Wshift-count-overflow]
                   ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
                                                             ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 1 error generated.


vim +350 drivers/fpga/dfl-pci.c

968b8199e2585a Wu Hao   2018-06-30  332  
72ddd9f34040a4 Zhang Yi 2018-06-30  333  static
72ddd9f34040a4 Zhang Yi 2018-06-30  334  int cci_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *pcidevid)
72ddd9f34040a4 Zhang Yi 2018-06-30  335  {
72ddd9f34040a4 Zhang Yi 2018-06-30  336  	int ret;
72ddd9f34040a4 Zhang Yi 2018-06-30  337  
72ddd9f34040a4 Zhang Yi 2018-06-30  338  	ret = pcim_enable_device(pcidev);
72ddd9f34040a4 Zhang Yi 2018-06-30  339  	if (ret < 0) {
72ddd9f34040a4 Zhang Yi 2018-06-30  340  		dev_err(&pcidev->dev, "Failed to enable device %d.\n", ret);
72ddd9f34040a4 Zhang Yi 2018-06-30  341  		return ret;
72ddd9f34040a4 Zhang Yi 2018-06-30  342  	}
72ddd9f34040a4 Zhang Yi 2018-06-30  343  
72ddd9f34040a4 Zhang Yi 2018-06-30  344  	ret = pci_enable_pcie_error_reporting(pcidev);
72ddd9f34040a4 Zhang Yi 2018-06-30  345  	if (ret && ret != -EINVAL)
72ddd9f34040a4 Zhang Yi 2018-06-30  346  		dev_info(&pcidev->dev, "PCIE AER unavailable %d.\n", ret);
72ddd9f34040a4 Zhang Yi 2018-06-30  347  
72ddd9f34040a4 Zhang Yi 2018-06-30  348  	pci_set_master(pcidev);
72ddd9f34040a4 Zhang Yi 2018-06-30  349  
72ddd9f34040a4 Zhang Yi 2018-06-30 @350  	if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
72ddd9f34040a4 Zhang Yi 2018-06-30  351  		ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
72ddd9f34040a4 Zhang Yi 2018-06-30  352  		if (ret)
72ddd9f34040a4 Zhang Yi 2018-06-30  353  			goto disable_error_report_exit;
72ddd9f34040a4 Zhang Yi 2018-06-30  354  	} else if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) {
72ddd9f34040a4 Zhang Yi 2018-06-30  355  		ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
72ddd9f34040a4 Zhang Yi 2018-06-30  356  		if (ret)
72ddd9f34040a4 Zhang Yi 2018-06-30  357  			goto disable_error_report_exit;
72ddd9f34040a4 Zhang Yi 2018-06-30  358  	} else {
72ddd9f34040a4 Zhang Yi 2018-06-30  359  		ret = -EIO;
72ddd9f34040a4 Zhang Yi 2018-06-30  360  		dev_err(&pcidev->dev, "No suitable DMA support available.\n");
72ddd9f34040a4 Zhang Yi 2018-06-30  361  		goto disable_error_report_exit;
72ddd9f34040a4 Zhang Yi 2018-06-30  362  	}
72ddd9f34040a4 Zhang Yi 2018-06-30  363  
968b8199e2585a Wu Hao   2018-06-30  364  	ret = cci_init_drvdata(pcidev);
968b8199e2585a Wu Hao   2018-06-30  365  	if (ret) {
968b8199e2585a Wu Hao   2018-06-30  366  		dev_err(&pcidev->dev, "Fail to init drvdata %d.\n", ret);
968b8199e2585a Wu Hao   2018-06-30  367  		goto disable_error_report_exit;
968b8199e2585a Wu Hao   2018-06-30  368  	}
968b8199e2585a Wu Hao   2018-06-30  369  
968b8199e2585a Wu Hao   2018-06-30  370  	ret = cci_enumerate_feature_devs(pcidev);
bfef946dbe1bbe Xu Yilun 2020-06-16  371  	if (!ret)
968b8199e2585a Wu Hao   2018-06-30  372  		return ret;
72ddd9f34040a4 Zhang Yi 2018-06-30  373  
bfef946dbe1bbe Xu Yilun 2020-06-16  374  	dev_err(&pcidev->dev, "enumeration failure %d.\n", ret);
bfef946dbe1bbe Xu Yilun 2020-06-16  375  
72ddd9f34040a4 Zhang Yi 2018-06-30  376  disable_error_report_exit:
72ddd9f34040a4 Zhang Yi 2018-06-30  377  	pci_disable_pcie_error_reporting(pcidev);
72ddd9f34040a4 Zhang Yi 2018-06-30  378  	return ret;
72ddd9f34040a4 Zhang Yi 2018-06-30  379  }
72ddd9f34040a4 Zhang Yi 2018-06-30  380  

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

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