tree: https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git droid4-pending-v5.7 head: c79f709cdba38b9a054d444f4eabc0e1126f06cc commit: c711eebb37dcf40648df3723e43ef028b7304bc0 [3/27] Input: omap4-keypad - Scan keys in two phases and simplify with bitmask config: alpha-randconfig-r033-20200522 (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 git checkout c711eebb37dcf40648df3723e43ef028b7304bc0 # 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: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/input/keyboard/omap4-keypad.c: In function 'omap4_keypad_irq_thread_fn': drivers/input/keyboard/omap4-keypad.c:161:15: warning: variable 'keys_down' set but not used [-Wunused-but-set-variable] 161 | int keys_up, keys_down; | ^~~~~~~~~ 161 | int keys_up, keys_down; | ^~~~~~~ vim +/keys_up +161 drivers/input/keyboard/omap4-keypad.c 156 157 static irqreturn_t omap4_keypad_irq_thread_fn(int irq, void *dev_id) 158 { 159 struct omap4_keypad *keypad_data = dev_id; 160 struct input_dev *input_dev = keypad_data->input; 162 u32 low, high; 163 u64 keys; 164 165 low = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE31_0); 166 high = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE63_32); 167 keys = low | (u64)high << 32; 168 169 /* Scan for key up events for lost key-up interrupts */ 170 keys_up = omap4_keypad_scan_state(keypad_data, keys, false); 171 172 /* Scan for key down events */ 173 keys_down = omap4_keypad_scan_state(keypad_data, keys, true); 174 175 input_sync(input_dev); 176 177 keypad_data->keys = keys; 178 179 /* clear pending interrupts */ 180 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS, 181 kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)); 182 183 return IRQ_HANDLED; 184 } 185 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org