Hi Joseph,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 9d922f5df53844228b9f7c62f2593f4f06c0b69b]

url:    https://github.com/0day-ci/linux/commits/Joseph-CHAMG/ADD-DM9051-ETHERNET-DRIVER/20220105-162144
base:   9d922f5df53844228b9f7c62f2593f4f06c0b69b
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20220106/202201060738.5ZBat35r-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d5b6e30ed3acad794dd0aec400e617daffc6cc3d)
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
        # https://github.com/0day-ci/linux/commit/4a2b192e52a57fee2e5d3452eeb1f3764ef4086c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Joseph-CHAMG/ADD-DM9051-ETHERNET-DRIVER/20220105-162144
        git checkout 4a2b192e52a57fee2e5d3452eeb1f3764ef4086c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/media/platform/atmel/ drivers/media/platform/sti/bdisp/ drivers/media/platform/sti/delta/ drivers/media/platform/sti/hva/ drivers/mmc/host/ drivers/net/ethernet/davicom/ drivers/staging/rtl8723bs/ fs/xfs/

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/ethernet/davicom/dm9051.c:153:52: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand]
           regmap_write(db->regmap, DM9051_EPDRH, (val >> 8) && 0xff);
                                                             ^  ~~~~
   drivers/net/ethernet/davicom/dm9051.c:153:52: note: use '&' for a bitwise operation
           regmap_write(db->regmap, DM9051_EPDRH, (val >> 8) && 0xff);
                                                             ^~
                                                             &
   drivers/net/ethernet/davicom/dm9051.c:153:52: note: remove constant to silence this warning
           regmap_write(db->regmap, DM9051_EPDRH, (val >> 8) && 0xff);
                                                            ~^~~~~~~
   1 warning generated.


vim +153 drivers/net/ethernet/davicom/dm9051.c

   145	
   146	static int regmap_dm9051_phy_reg_write(void *context, unsigned int reg, unsigned int val)
   147	{
   148		struct board_info *db = context;
   149		int ret;
   150	
   151		regmap_write(db->regmap, DM9051_EPAR, DM9051_PHY | reg);
   152		regmap_write(db->regmap, DM9051_EPDRL, val & 0xff);
 > 153		regmap_write(db->regmap, DM9051_EPDRH, (val >> 8) && 0xff);
   154		regmap_write(db->regmap, DM9051_EPCR, EPCR_EPOS | EPCR_ERPRW);
   155		ret = dm9051_map_poll(db);
   156		regmap_write(db->regmap, DM9051_EPCR, 0x0);
   157	
   158		if (reg == MII_BMCR && !(val & 0x0800))
   159			mdelay(1); /* need for if activate phyxcer */
   160	
   161		return ret;
   162	}
   163	

---
0-DAY CI Kernel Test Service, Intel Corporation
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