tree: https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-5.12/playstation head: 1f902f8636e499c32f0b55e1ce150082829ef033 commit: d30bca44809eb1d2937e59d3d09694f40613070d [3/13] HID: playstation: add DualSense battery support. config: nds32-allyesconfig (attached as .config) compiler: nds32le-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 # https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git/commit/?id=d3... git remote add hid https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git git fetch --no-tags hid for-5.12/playstation git checkout d30bca44809eb1d2937e59d3d09694f40613070d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 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/hid/hid-playstation.c: In function 'ps_battery_get_property': 170 | int ret; | ^~~ vim +/ret +170 drivers/hid/hid-playstation.c 161 162 static int ps_battery_get_property(struct power_supply *psy, 163 enum power_supply_property psp, 164 union power_supply_propval *val) 165 { 166 struct ps_device *dev = power_supply_get_drvdata(psy); 167 uint8_t battery_capacity; 168 int battery_status; 169 unsigned long flags; 171 172 spin_lock_irqsave(&dev->lock, flags); 173 battery_capacity = dev->battery_capacity; 174 battery_status = dev->battery_status; 175 spin_unlock_irqrestore(&dev->lock, flags); 176 177 switch (psp) { 178 case POWER_SUPPLY_PROP_STATUS: 179 val->intval = battery_status; 180 break; 181 case POWER_SUPPLY_PROP_PRESENT: 182 val->intval = 1; 183 break; 184 case POWER_SUPPLY_PROP_CAPACITY: 185 val->intval = battery_capacity; 186 break; 187 case POWER_SUPPLY_PROP_SCOPE: 188 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 189 break; 190 default: 191 ret = -EINVAL; 192 break; 193 } 194 195 return 0; 196 } 197 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org