static void solo_set_time(struct solo_dev *solo_dev)
 {
-       struct timespec ts;
+       struct timespec64 ts;
 
-       ktime_get_ts(&ts);
+       ktime_get_ts64(&ts);
 
-       solo_reg_write(solo_dev, SOLO_TIMER_SEC, ts.tv_sec);
-       solo_reg_write(solo_dev, SOLO_TIMER_USEC, ts.tv_nsec / NSEC_PER_USEC);
+       /* no overflow because we use monotonic timestamps */
+       solo_reg_write(solo_dev, SOLO_TIMER_SEC, (u32)ts.tv_sec);
+       solo_reg_write(solo_dev, SOLO_TIMER_USEC, (u32)ts.tv_nsec / NSEC_PER_USEC);
 }
 
 static void solo_timer_sync(struct solo_dev *solo_dev)
 {
        u32 sec, usec;
-       struct timespec ts;
+       struct timespec64 ts;
        long diff;
 
        if (solo_dev->type != SOLO_DEV_6110)
        sec = solo_reg_read(solo_dev, SOLO_TIMER_SEC);
        usec = solo_reg_read(solo_dev, SOLO_TIMER_USEC);
 
-       ktime_get_ts(&ts);
+       ktime_get_ts64(&ts);
 
-       diff = (long)ts.tv_sec - (long)sec;
+       diff = (s32)ts.tv_sec - (s32)sec;
        diff = (diff * 1000000)
-               + ((long)(ts.tv_nsec / NSEC_PER_USEC) - (long)usec);
+               + ((s32)(ts.tv_nsec / NSEC_PER_USEC) - (s32)usec);
 
        if (diff > 1000 || diff < -1000) {
                solo_set_time(solo_dev);