Hi "Marek,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net/master]
[also build test ERROR on next-20210413]
[cannot apply to net-next/master ipvs/master linus/master v5.12-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Marek-Beh-n/net-phy-marvell-some-HWMON-updates/20210413-155751
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git ccb39c6285581992f0225c45e4de704028a8ec17
config: x86_64-randconfig-a011-20210413 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9829f5e6b1bca9b61efc629770d28bb9014dec45)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/594b70c48fa643c6864722ab488bbfba0b210852
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Marek-Beh-n/net-phy-marvell-some-HWMON-updates/20210413-155751
        git checkout 594b70c48fa643c6864722ab488bbfba0b210852
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> drivers/net/phy/marvell.c:2416:3: error: fallthrough annotation does not directly precede switch label
                   fallthrough;
                   ^
   include/linux/compiler_attributes.h:208:41: note: expanded from macro 'fallthrough'
   # define fallthrough                    __attribute__((__fallthrough__))
                                           ^
   1 error generated.


vim +2416 drivers/net/phy/marvell.c

  2394	
  2395	static int marvell_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
  2396				      u32 attr, int channel, long *temp)
  2397	{
  2398		struct phy_device *phydev = dev_get_drvdata(dev);
  2399		const struct marvell_hwmon_ops *ops = to_marvell_hwmon_ops(phydev);
  2400		int err = -EOPNOTSUPP;
  2401	
  2402		switch (attr) {
  2403		case hwmon_temp_input:
  2404			if (ops->get_temp)
  2405				err = ops->get_temp(phydev, temp);
  2406			break;
  2407		case hwmon_temp_crit:
  2408			if (ops->get_temp_critical)
  2409				err = ops->get_temp_critical(phydev, temp);
  2410			break;
  2411		case hwmon_temp_max_alarm:
  2412			if (ops->get_temp_alarm)
  2413				err = ops->get_temp_alarm(phydev, temp);
  2414			break;
  2415		default:
> 2416			fallthrough;
  2417		}
  2418	
  2419		return err;
  2420	}
  2421	

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