[frank-w-bpi-r2-4.14:5.4-mmctest 45/223] drivers/net/dsa/mt7530.c:2151:6: warning: no previous prototype for 'mt7531_sgmii_restart_an'

[frank-w-bpi-r2-4.14:5.4-mmctest 45/223] drivers/net/dsa/mt7530.c:2151:6: warning: no previous prototype for 'mt7531_sgmii_restart_an'

[kernel test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.4-mmctest
head:   3a68e55aefe320dbd684083c35aa1ff263b0f1fd
commit: a5f7cc192993935d0bc3edcca566684364e66785 [45/223] net: dsa: mt7530: Add the support of MT7531 switch
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/frank-w/BPI-R2-4.14/commit/a5f7cc192993935d0bc3edcca566684364e66785
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.4-mmctest
        git checkout a5f7cc192993935d0bc3edcca566684364e66785
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

>> drivers/net/dsa/mt7530.c:2151:6: warning: no previous prototype for 'mt7531_sgmii_restart_an' [-Wmissing-prototypes]
    2151 | void mt7531_sgmii_restart_an(struct dsa_switch *ds, int port)
         |      ^~~~~~~~~~~~~~~~~~~~~~~


vim +/mt7531_sgmii_restart_an +2151 drivers/net/dsa/mt7530.c

  2150	
> 2151	void mt7531_sgmii_restart_an(struct dsa_switch *ds, int port)
  2152	{
  2153		struct mt7530_priv *priv = ds->priv;
  2154		u32 val;
  2155	
  2156		val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
  2157		val |= MT7531_SGMII_AN_RESTART;
  2158		mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val);
  2159	}
  2160	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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