diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 9e49b3e..e13fb5f 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -125,14 +125,20 @@
 	cur_time = jiffies;
 	devfreq->time_in_state[lev] +=
 			 cur_time - devfreq->last_stat_updated;
-	if (freq != devfreq->previous_freq) {
-		prev_lev = devfreq_get_freq_level(devfreq,
-						devfreq->previous_freq);
+	devfreq->last_stat_updated = cur_time;
+
+	if (freq == devfreq->previous_freq)
+		return 0;
+
+	prev_lev = devfreq_get_freq_level(devfreq, devfreq->previous_freq);
+	if (prev_lev < 0)
+		return 0;
+
+	if (lev != prev_lev) {
 		devfreq->trans_table[(prev_lev *
 				devfreq->profile->max_state) + lev]++;
 		devfreq->total_trans++;
 	}
-	devfreq->last_stat_updated = cur_time;
 
 	return 0;
 }