Hi Honghui,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.13-rc2 next-20170728]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/honghui-zhang-mediatek-com/memory-mtk-smi-Use-of_device_get_match_data-helper/20170728-161812
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   drivers//memory/mtk-smi.c: In function 'mtk_smi_common_probe':
>> drivers//memory/mtk-smi.c:341:10: error: incompatible types when assigning 
>> to type 'enum mtk_smi_gen' from type 'const void *'
     smi_gen = of_device_get_match_data(dev);
             ^

vim +341 drivers//memory/mtk-smi.c

   311  
   312  static int mtk_smi_common_probe(struct platform_device *pdev)
   313  {
   314          struct device *dev = &pdev->dev;
   315          struct mtk_smi *common;
   316          struct resource *res;
   317          enum mtk_smi_gen smi_gen;
   318  
   319          if (!dev->pm_domain)
   320                  return -EPROBE_DEFER;
   321  
   322          common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
   323          if (!common)
   324                  return -ENOMEM;
   325          common->dev = dev;
   326  
   327          common->clk_apb = devm_clk_get(dev, "apb");
   328          if (IS_ERR(common->clk_apb))
   329                  return PTR_ERR(common->clk_apb);
   330  
   331          common->clk_smi = devm_clk_get(dev, "smi");
   332          if (IS_ERR(common->clk_smi))
   333                  return PTR_ERR(common->clk_smi);
   334  
   335          /*
   336           * for mtk smi gen 1, we need to get the ao(always on) base to 
config
   337           * m4u port, and we need to enable the aync clock for transform 
the smi
   338           * clock into emi clock domain, but for mtk smi gen2, there's 
no smi ao
   339           * base.
   340           */
 > 341          smi_gen = of_device_get_match_data(dev);
   342          if (smi_gen == MTK_SMI_GEN1) {
   343                  res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
   344                  common->smi_ao_base = devm_ioremap_resource(dev, res);
   345                  if (IS_ERR(common->smi_ao_base))
   346                          return PTR_ERR(common->smi_ao_base);
   347  
   348                  common->clk_async = devm_clk_get(dev, "async");
   349                  if (IS_ERR(common->clk_async))
   350                          return PTR_ERR(common->clk_async);
   351  
   352                  clk_prepare_enable(common->clk_async);
   353          }
   354          pm_runtime_enable(dev);
   355          platform_set_drvdata(pdev, common);
   356          return 0;
   357  }
   358  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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