Hi Hongtao,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on pci/next]
[also build test WARNING on robh/for-next v5.9-rc1 next-20200821]
[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/Hongtao-Wu/PCI-Add-new-Unisoc-PCIe-driver/20200821-175351
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>

All warnings (new ones prefixed by >>):

>> drivers/pci/controller/dwc/pcie-sprd.c:43:5: warning: no previous prototype 
>> for 'sprd_pcie_syscon_setting' [-Wmissing-prototypes]
      43 | int sprd_pcie_syscon_setting(struct platform_device *pdev, char *env)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~

# 
https://github.com/0day-ci/linux/commit/b82baaf6b6b4a04032d29dd7b749d1f9c4a23104
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review 
Hongtao-Wu/PCI-Add-new-Unisoc-PCIe-driver/20200821-175351
git checkout b82baaf6b6b4a04032d29dd7b749d1f9c4a23104
vim +/sprd_pcie_syscon_setting +43 drivers/pci/controller/dwc/pcie-sprd.c

    42  
  > 43  int sprd_pcie_syscon_setting(struct platform_device *pdev, char *env)
    44  {
    45         struct device_node *np = pdev->dev.of_node;
    46         int i, count, err;
    47         u32 type, delay, reg, mask, val, tmp_val;
    48         struct of_phandle_args out_args;
    49         struct regmap *iomap;
    50         struct device *dev = &pdev->dev;
    51  
    52         if (!of_find_property(np, env, NULL)) {
    53                 dev_info(dev, "There isn't property %s in dts\n", env);
    54                 return 0;
    55         }
    56  
    57         count = of_property_count_elems_of_size(np, env,
    58                                 (NUM_OF_ARGS + 1) * sizeof(u32));
    59         dev_info(dev, "Property (%s) reg count is %d :\n", env, count);
    60  
    61         for (i = 0; i < count; i++) {
    62                 err = of_parse_phandle_with_fixed_args(np, env, 
NUM_OF_ARGS,
    63                                                        i, &out_args);
    64                 if (err < 0)
    65                         return err;
    66  
    67                 type = out_args.args[0];
    68                 delay = out_args.args[1];
    69                 reg = out_args.args[2];
    70                 mask = out_args.args[3];
    71                 val = out_args.args[4];
    72  
    73                 iomap = syscon_node_to_regmap(out_args.np);
    74  
    75                 switch (type) {
    76                 case 0:
    77                         regmap_update_bits(iomap, reg, mask, val);
    78                         break;
    79  
    80                 case 1:
    81                         regmap_read(iomap, reg, &tmp_val);
    82                         tmp_val &= (~mask);
    83                         tmp_val |= (val & mask);
    84                         regmap_write(iomap, reg, tmp_val);
    85                         break;
    86                 default:
    87                         break;
    88                 }
    89  
    90                 if (delay)
    91                         usleep_range(delay, delay + 10);
    92  
    93                 regmap_read(iomap, reg, &tmp_val);
    94                 dev_dbg(&pdev->dev,
    95                         "%2d:reg[0x%8x] mask[0x%8x] val[0x%8x] 
result[0x%8x]\n",
    96                         i, reg, mask, val, tmp_val);
    97         }
    98  
    99         return i;
   100  }
   101  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
Description: application/gzip

Reply via email to