[frank-w-bpi-r2-4.14:5.4-wifi 7/8] include/soc/mediatek/pmic_wrap.h:17:51: warning: 'struct device_node' declared inside parameter list will not be visible outside of this definition or declaration

[frank-w-bpi-r2-4.14:5.4-wifi 7/8] include/soc/mediatek/pmic_wrap.h:17:51: warning: 'struct device_node' declared inside parameter list will not be visible outside of this definition or declaration

[kbuild test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.4-wifi
head:   3061ab72e23bf4b077be3bf63faec28d13426d01
commit: 9be79d3c1b7ac9d6ab9134651ff347cb77abdb57 [7/8] try to fix wakeup_source_prepare build-error
config: x86_64-randconfig-e003-201939 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-13) 7.4.0
reproduce:
        git checkout 9be79d3c1b7ac9d6ab9134651ff347cb77abdb57
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from <command-line>:0:0:
>> include/soc/mediatek/pmic_wrap.h:17:51: warning: 'struct device_node' declared inside parameter list will not be visible outside of this definition or declaration
    extern struct regmap *pwrap_node_to_regmap(struct device_node *np);
                                                      ^~~~~~~~~~~

vim +17 include/soc/mediatek/pmic_wrap.h

29838659c861ef Frank Wunderlich 2019-01-19  16  
29838659c861ef Frank Wunderlich 2019-01-19 @17  extern struct regmap *pwrap_node_to_regmap(struct device_node *np);
29838659c861ef Frank Wunderlich 2019-01-19  18  

:::::: The code at line 17 was first introduced by commit
:::::: 29838659c861eff7e42010ee63210dd1a91e3e55 [wifi] adding wifi-related changes outside driver-directory

:::::: TO: Frank Wunderlich <frank-w@public-files.de>
:::::: CC: Frank Wunderlich <frank-w@public-files.de>

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

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