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 <lkp@xxxxxxxxx> 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/kbuild-all@xxxxxxxxxxxx
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