tree: https://github.com/thierryreding/linux for-5.8/gpio head: 7bf6a172582da9ec37054f5db206308e6bda0ac4 commit: 7bf6a172582da9ec37054f5db206308e6bda0ac4 [4/4] WIP config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.5.0-5) 7.5.0 reproduce: git checkout 7bf6a172582da9ec37054f5db206308e6bda0ac4 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): #define DEBUG <command-line>:0:0: note: this is the location of the previous definition vim +/DEBUG +2 drivers/gpio/gpiolib.c 3 #include <linux/bitmap.h> 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/interrupt.h> 7 #include <linux/irq.h> 8 #include <linux/spinlock.h> 9 #include <linux/list.h> 10 #include <linux/device.h> 11 #include <linux/err.h> 12 #include <linux/debugfs.h> 13 #include <linux/seq_file.h> 14 #include <linux/gpio.h> 15 #include <linux/idr.h> 16 #include <linux/slab.h> 17 #include <linux/acpi.h> 18 #include <linux/gpio/driver.h> 19 #include <linux/gpio/machine.h> 20 #include <linux/pinctrl/consumer.h> 21 #include <linux/cdev.h> 22 #include <linux/fs.h> 23 #include <linux/uaccess.h> 24 #include <linux/compat.h> 25 #include <linux/anon_inodes.h> 26 #include <linux/file.h> 27 #include <linux/kfifo.h> 28 #include <linux/poll.h> 29 #include <linux/timekeeping.h> 30 #include <uapi/linux/gpio.h> 31 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org