Hi zhong,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm-soc/for-next]
[also build test ERROR on v4.19-rc3 next-20180913]
[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/zhong-jiang/arm-common-use-match_string-helper-to-simplify-the-code/20180915-035510
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git for-next
config: arm-multi_v5_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        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
        GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/plat-orion/common.c: In function 'orion_ge00_switch_init':
>> arch/arm/plat-orion/common.c:487:23: error: passing argument 1 of 
>> 'match_string' from incompatible pointer type 
>> [-Werror=incompatible-pointer-types]
     index = match_string(d->port_names, ARRAY_SIZE(d->port_names), "cpu");
                          ^
   In file included from include/linux/bitmap.h:9:0,
                    from include/linux/cpumask.h:12,
                    from include/linux/rcupdate.h:44,
                    from include/linux/radix-tree.h:28,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:14,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/device.h:16,
                    from include/linux/platform_device.h:14,
                    from arch/arm/plat-orion/common.c:13:
   include/linux/string.h:184:5: note: expected 'const char * const*' but 
argument is of type 'char **'
    int match_string(const char * const *array, size_t n, const char *string);
        ^~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/match_string +487 arch/arm/plat-orion/common.c

   479  
   480  void __init orion_ge00_switch_init(struct dsa_chip_data *d)
   481  {
   482          int index;
   483  
   484          if (!IS_BUILTIN(CONFIG_PHYLIB))
   485                  return;
   486  
 > 487          index = match_string(d->port_names, ARRAY_SIZE(d->port_names), 
 > "cpu");
   488          if (index >= 0)
   489                  d->netdev[index] = &orion_ge00.dev;
   490  
   491          orion_ge00_switch_board_info.mdio_addr = d->sw_addr;
   492          orion_ge00_switch_board_info.platform_data = d;
   493  
   494          mdiobus_register_board_info(&orion_ge00_switch_board_info, 1);
   495  }
   496  #endif
   497  

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

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