[frank-w-bpi-r2-4.14:6.6-r3mini 17/19] drivers/net/phy/air_en8811h.c:898:13: warning: unused variable 'mask'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/frank-w/BPI-R2-4.14 6.6-r3mini
head:   796143376b6d67cadd89f7466e25a56b6ee48f34
commit: a9fdd653cabc7df77cd5a88e21797d7c677035bb [17/19] prepare interrupt for 2g5 phy
config: openrisc-allyesconfig (https://download.01.org/0day-ci/archive/20231109/202311091624.ifBP2fk6-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311091624.ifBP2fk6-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311091624.ifBP2fk6-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/phy/air_en8811h.c:792:5: warning: no previous prototype for 'en8811h_phy_modify_mmd_changed' [-Wmissing-prototypes]
     792 | int en8811h_phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/phy/air_en8811h.c: In function 'airoha_config_intr':
>> drivers/net/phy/air_en8811h.c:898:13: warning: unused variable 'mask' [-Wunused-variable]
     898 |         u16 mask = 0;
         |             ^~~~
   drivers/net/phy/air_en8811h.c: At top level:
   drivers/net/phy/air_en8811h.c:952:12: warning: no previous prototype for 'en8811h_phy_driver_register' [-Wmissing-prototypes]
     952 | int __init en8811h_phy_driver_register(void)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/phy/air_en8811h.c:963:13: warning: no previous prototype for 'en8811h_phy_driver_unregister' [-Wmissing-prototypes]
     963 | void __exit en8811h_phy_driver_unregister(void)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/phy/air_en8811h.c: In function 'airoha_config_intr':
>> drivers/net/phy/air_en8811h.c:916:16: warning: 'err' is used uninitialized [-Wuninitialized]
     916 |         return err;
         |                ^~~
   drivers/net/phy/air_en8811h.c:899:13: note: 'err' was declared here
     899 |         int err;
         |             ^~~


vim +/mask +898 drivers/net/phy/air_en8811h.c

   895	
   896	static int airoha_config_intr(struct phy_device *phydev)
   897	{
 > 898		u16 mask = 0;
   899		int err;
   900	
   901		if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
   902			/*err = airoha_ack_interrupt(phydev);
   903			if (err)
   904				return err;
   905	
   906			mask = XWAY_MDIO_INIT_MASK;
   907			err = phy_write(phydev, XWAY_MDIO_IMASK, mask);*/
   908		} else {
   909			/*err = phy_write(phydev, XWAY_MDIO_IMASK, mask);
   910			if (err)
   911				return err;
   912	
   913			err = airoha_ack_interrupt(phydev);*/
   914		}
   915	
 > 916		return err;
   917	}
   918	

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