Pretty much everything fails to build. kernel/time/alarmtimer.c: In function 'alarm_timer_set': time/alarmtimer.c:619:30: error: invalid operands to binary < (have 'ktime_t' and 'long int') alarmtimer.c:620:27: error: incompatible types when assigning to type 'ktime_t' from type 'long int' make[3]: *** [kernel/time/alarmtimer.o] Error 1 Guenter