Hi RaviChandra, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.0] [cannot apply to next-20190301] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/RaviChandra-Sadineni/cros_ec-Expose-sysfile-to-force-battery-cut-off-on-shutdown/20190304-220513 config: nds32-allyesconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 6.4.0 reproduce: 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 GCC_VERSION=6.4.0 make.cross ARCH=nds32 All error/warnings (new ones prefixed by >>): >> drivers/platform/chrome/cros_ec_sysfs.c:369:3: error: 'dev_attr_cutoff_battery_at_shutdown' undeclared here (not in a function) &dev_attr_cutoff_battery_at_shutdown.attr, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/platform/chrome/cros_ec_sysfs.c:24:0: include/linux/device.h:602:26: warning: 'dev_attr_cutoff_at_shutdown' defined but not used [-Wunused-variable] struct device_attribute dev_attr_##_name = __ATTR_WO(_name) ^ >> drivers/platform/chrome/cros_ec_sysfs.c:366:8: note: in expansion of macro 'DEVICE_ATTR_WO' static DEVICE_ATTR_WO(cutoff_at_shutdown); ^~~~~~~~~~~~~~ vim +/dev_attr_cutoff_battery_at_shutdown +369 drivers/platform/chrome/cros_ec_sysfs.c 361 362 static DEVICE_ATTR_RW(reboot); 363 static DEVICE_ATTR_RO(version); 364 static DEVICE_ATTR_RO(flashinfo); 365 static DEVICE_ATTR_RW(kb_wake_angle); > 366 static DEVICE_ATTR_WO(cutoff_at_shutdown); 367 368 static struct attribute *__ec_attrs[] = { > 369 &dev_attr_cutoff_battery_at_shutdown.attr, 370 &dev_attr_kb_wake_angle.attr, 371 &dev_attr_reboot.attr, 372 &dev_attr_version.attr, 373 &dev_attr_flashinfo.attr, 374 NULL, 375 }; 376 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation