diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 64e450dddb49d55c3ddea43bb35371958f52369a..167fd89f8707aeb1b0ad59190e9fa352718d5900 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1150,16 +1150,13 @@ osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remai
 	if (get_tv32(&tmp, sleep))
 		goto fault;
 
-	ticks = tmp.tv_usec;
-	ticks = (ticks + (1000000 / HZ) - 1) / (1000000 / HZ);
-	ticks += tmp.tv_sec * HZ;
+	ticks = timeval_to_jiffies(&tmp);
 
 	current->state = TASK_INTERRUPTIBLE;
 	ticks = schedule_timeout(ticks);
 
 	if (remain) {
-		tmp.tv_sec = ticks / HZ;
-		tmp.tv_usec = ticks % HZ;
+		jiffies_to_timeval(ticks, &tmp);
 		if (put_tv32(remain, &tmp))
 			goto fault;
 	}