tree: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git watchdog-next head: 293903b9dfe43520f01374dc1661be11d6838c49 commit: 5ea29919c29413c984f4ba3e04a6679d306e7a6e [25/28] watchdog: da9063: use atomic safe i2c transfer in reset handler config: csky-randconfig-r032-20211128 (https://download.01.org/0day-ci/archive/20211129/202111292050.cwhXdxtQ-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 11.2.0 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/groeck/linux-staging.git/commit/?id=5ea29919c29413c984f4ba3e04a6679d306e7a6e git remote add groeck-staging https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git git fetch --no-tags groeck-staging watchdog-next git checkout 5ea29919c29413c984f4ba3e04a6679d306e7a6e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=csky SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/watchdog/da9063_wdt.c: In function 'da9063_wdt_restart': >> drivers/watchdog/da9063_wdt.c:177:15: error: implicit declaration of function 'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration] 177 | ret = i2c_smbus_write_byte_data(client, DA9063_REG_CONTROL_F, | ^~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/i2c_smbus_write_byte_data +177 drivers/watchdog/da9063_wdt.c 168 169 static int da9063_wdt_restart(struct watchdog_device *wdd, unsigned long action, 170 void *data) 171 { 172 struct da9063 *da9063 = watchdog_get_drvdata(wdd); 173 struct i2c_client *client = to_i2c_client(da9063->dev); 174 int ret; 175 176 /* Don't use regmap because it is not atomic safe */ > 177 ret = i2c_smbus_write_byte_data(client, DA9063_REG_CONTROL_F, 178 DA9063_SHUTDOWN); 179 if (ret < 0) 180 dev_alert(da9063->dev, "Failed to shutdown (err = %d)\n", 181 ret); 182 183 /* wait for reset to assert... */ 184 mdelay(500); 185 186 return ret; 187 } 188 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
