Hi "Marek, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Marek-Beh-n/Add-support-for-LEDs... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 59632b220f2d61df274ed3a14a204e941051fdad config: alpha-allyesconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/net/phy/marvell.c: In function 'marvell_led_set_regval': 775 | int reg; | ^~~ drivers/net/phy/marvell.c: In function '_marvell_led_brightness_set': 806 | int led; | ^~~ vim +/reg +775 drivers/net/phy/marvell.c 771 772 static int marvell_led_set_regval(struct phy_device *phydev, int led, u16 val) 773 { 774 u16 mask; 776 777 switch (led) { 778 case 0 ... 3: 779 reg = MII_PHY_LED_CTRL; 780 break; 781 case 4 ... 5: 782 reg = MII_PHY_LED45_CTRL; 783 break; 784 default: 785 return -EINVAL; 786 } 787 788 val <<= (led % 4) * 4; 789 mask = 0xf << ((led % 4) * 4); 790 791 return phy_modify_paged(phydev, MII_MARVELL_LED_PAGE, MII_PHY_LED_CTRL, mask, val); 792 } 793 794 static inline int marvell_led_index(struct led_classdev *cdev) 795 { 796 struct marvell_priv *priv = to_phy_device(cdev->dev->parent)->priv; 797 798 return cdev - &priv->leds[0]; 799 } 800 801 static int _marvell_led_brightness_set(struct led_classdev *cdev, enum led_brightness brightness, 802 bool check_trigger) 803 { 804 struct phy_device *phydev = to_phy_device(cdev->dev->parent); 805 struct marvell_priv *priv = phydev->priv; 807 u8 val; 808 809 /* don't do anything if one of HW triggers is set */ 810 if (check_trigger && &marvell_led_triggers[0] <= cdev->trigger && 811 cdev->trigger < &marvell_led_triggers[ARRAY_SIZE(marvell_led_triggers)]) 812 return 0; 813 814 led = cdev - &priv->leds[0]; 815 val = brightness ? MII_PHY_LED_CTRL_FORCE_ON : MII_PHY_LED_CTRL_FORCE_OFF; 816 817 return marvell_led_set_regval(phydev, marvell_led_index(cdev), val); 818 } 819 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org