Hi Laurent, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/timers/core] [also build test ERROR on linux/master linus/master next-20220121] [cannot apply to geert-m68k/for-next v5.16] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Laurent-Vivier/m68k-Add-Virtual-... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 35e13e9da9afbce13c1d36465504ece4e65f24fe config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220121/202201212032.qL41ty3V-lk...) compiler: arceb-elf-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://github.com/0day-ci/linux/commit/ea1170b472532011ab0c8208b6414a368... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Laurent-Vivier/m68k-Add-Virtual-M68k-Machine/20220120-160832 git checkout ea1170b472532011ab0c8208b6414a36810f45ab # 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=arc SHELL=/bin/bash 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 >>): drivers/clocksource/timer-goldfish.c: In function 'goldfish_timer_read': 52 | time_low = gf_ioread32(base + TIMER_TIME_LOW); | ^~~~~~~~~~~ | ioread32 drivers/clocksource/timer-goldfish.c: In function 'goldfish_timer_set_oneshot': 65 | gf_iowrite32(0, base + TIMER_ALARM_HIGH); | ^~~~~~~~~~~~ | iowrite32 cc1: some warnings being treated as errors vim +52 drivers/clocksource/timer-goldfish.c 40 41 static u64 goldfish_timer_read(struct clocksource *cs) 42 { 43 struct goldfish_timer *timerdrv = cs_to_gf(cs); 44 void __iomem *base = timerdrv->base; 45 u32 time_low, time_high; 46 u64 ticks; 47 48 /* 49 * time_low: get low bits of current time and update time_high 50 * time_high: get high bits of time at last time_low read 51 */ 53 time_high = gf_ioread32(base + TIMER_TIME_HIGH); 54 55 ticks = ((u64)time_high << 32) | time_low; 56 57 return ticks; 58 } 59 60 static int goldfish_timer_set_oneshot(struct clock_event_device *evt) 61 { 62 struct goldfish_timer *timerdrv = ced_to_gf(evt); 63 void __iomem *base = timerdrv->base; 64 66 gf_iowrite32(0, base + TIMER_ALARM_LOW); 67 gf_iowrite32(1, base + TIMER_IRQ_ENABLED); 68 69 return 0; 70 } 71 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org