tree: https://github.com/cminyard/linux-ipmi ipmi-wdt-rework head: a22010ce71ef67492980e4c55ad7864679826b53 commit: dd98cd72e76155295670444d779227ee5a6694d5 [4/10] watchdog: Add functions to set the timeout and pretimeout config: s390-allyesconfig (attached as .config) compiler: s390-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 dd98cd72e76155295670444d779227ee5a6694d5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 245 | static int watchdog_set_timeout(struct watchdog_device *wddev, | ^~~~~~~~~~~~~~~~~~~~ In file included from drivers/hwmon/sch56xx-common.c:17: include/linux/watchdog.h:205:5: note: previous declaration of 'watchdog_set_timeout' was here 205 | int watchdog_set_timeout(struct watchdog_device *wdd, unsigned int timeout); | ^~~~~~~~~~~~~~~~~~~~ -- 1190 | static int watchdog_set_timeout(struct w83793_data *data, int timeout) | ^~~~~~~~~~~~~~~~~~~~ In file included from drivers/hwmon/w83793.c:30: include/linux/watchdog.h:205:5: note: previous declaration of 'watchdog_set_timeout' was here 205 | int watchdog_set_timeout(struct watchdog_device *wdd, unsigned int timeout); | ^~~~~~~~~~~~~~~~~~~~ vim +/watchdog_set_timeout +245 drivers/hwmon/sch56xx-common.c 28ff2f7a742daba Hans de Goede 2011-07-25 240 312869ec935ab3b Hans de Goede 2012-03-18 241 /* 312869ec935ab3b Hans de Goede 2012-03-18 242 * Watchdog routines 312869ec935ab3b Hans de Goede 2012-03-18 243 */ 312869ec935ab3b Hans de Goede 2012-03-18 244 fb551405c0f8e15 Hans de Goede 2012-05-22 @245 static int watchdog_set_timeout(struct watchdog_device *wddev, fb551405c0f8e15 Hans de Goede 2012-05-22 246 unsigned int timeout) 312869ec935ab3b Hans de Goede 2012-03-18 247 { fb551405c0f8e15 Hans de Goede 2012-05-22 248 struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev); fb551405c0f8e15 Hans de Goede 2012-05-22 249 unsigned int resolution; 312869ec935ab3b Hans de Goede 2012-03-18 250 u8 control; fb551405c0f8e15 Hans de Goede 2012-05-22 251 int ret; 312869ec935ab3b Hans de Goede 2012-03-18 252 312869ec935ab3b Hans de Goede 2012-03-18 253 /* 1 second or 60 second resolution? */ 312869ec935ab3b Hans de Goede 2012-03-18 254 if (timeout <= 255) 312869ec935ab3b Hans de Goede 2012-03-18 255 resolution = 1; 312869ec935ab3b Hans de Goede 2012-03-18 256 else 312869ec935ab3b Hans de Goede 2012-03-18 257 resolution = 60; 312869ec935ab3b Hans de Goede 2012-03-18 258 312869ec935ab3b Hans de Goede 2012-03-18 259 if (timeout < resolution || timeout > (resolution * 255)) 312869ec935ab3b Hans de Goede 2012-03-18 260 return -EINVAL; 312869ec935ab3b Hans de Goede 2012-03-18 261 312869ec935ab3b Hans de Goede 2012-03-18 262 if (resolution == 1) 312869ec935ab3b Hans de Goede 2012-03-18 263 control = data->watchdog_control | SCH56XX_WDOG_TIME_BASE_SEC; 312869ec935ab3b Hans de Goede 2012-03-18 264 else 312869ec935ab3b Hans de Goede 2012-03-18 265 control = data->watchdog_control & ~SCH56XX_WDOG_TIME_BASE_SEC; 312869ec935ab3b Hans de Goede 2012-03-18 266 312869ec935ab3b Hans de Goede 2012-03-18 267 if (data->watchdog_control != control) { 312869ec935ab3b Hans de Goede 2012-03-18 268 mutex_lock(data->io_lock); 312869ec935ab3b Hans de Goede 2012-03-18 269 ret = sch56xx_write_virtual_reg(data->addr, 312869ec935ab3b Hans de Goede 2012-03-18 270 SCH56XX_REG_WDOG_CONTROL, 312869ec935ab3b Hans de Goede 2012-03-18 271 control); 312869ec935ab3b Hans de Goede 2012-03-18 272 mutex_unlock(data->io_lock); 312869ec935ab3b Hans de Goede 2012-03-18 273 if (ret) fb551405c0f8e15 Hans de Goede 2012-05-22 274 return ret; 312869ec935ab3b Hans de Goede 2012-03-18 275 312869ec935ab3b Hans de Goede 2012-03-18 276 data->watchdog_control = control; 312869ec935ab3b Hans de Goede 2012-03-18 277 } 312869ec935ab3b Hans de Goede 2012-03-18 278 312869ec935ab3b Hans de Goede 2012-03-18 279 /* 312869ec935ab3b Hans de Goede 2012-03-18 280 * Remember new timeout value, but do not write as that (re)starts 312869ec935ab3b Hans de Goede 2012-03-18 281 * the watchdog countdown. 312869ec935ab3b Hans de Goede 2012-03-18 282 */ 312869ec935ab3b Hans de Goede 2012-03-18 283 data->watchdog_preset = DIV_ROUND_UP(timeout, resolution); fb551405c0f8e15 Hans de Goede 2012-05-22 284 wddev->timeout = data->watchdog_preset * resolution; 312869ec935ab3b Hans de Goede 2012-03-18 285 fb551405c0f8e15 Hans de Goede 2012-05-22 286 return 0; 312869ec935ab3b Hans de Goede 2012-03-18 287 } 312869ec935ab3b Hans de Goede 2012-03-18 288 :::::: The code at line 245 was first introduced by commit :::::: fb551405c0f8e15d6fc7ae6e16a5e15382f8b8ac watchdog: sch56xx: Use watchdog core :::::: TO: Hans de Goede <hdegoede(a)redhat.com&gt; :::::: CC: Wim Van Sebroeck <wim(a)iguana.be&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org