1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 6742b1adf2c8..91ad342a6051 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -285,6 +285,7 @@ cpufreq_stat_notifier_trans (struct notifier_block *nb, unsigned long val,
         stat = cpufreq_stats_table[freq->cpu];
         if (!stat)
                 return 0;
+
         old_index = freq_table_get_index(stat, freq->old);
         new_index = freq_table_get_index(stat, freq->new);
 
@@ -292,6 +293,9 @@ cpufreq_stat_notifier_trans (struct notifier_block *nb, unsigned long val,
         if (old_index == new_index)
                 return 0;
 
+        if (old_index == -1 || new_index == -1)
+                return 0;
+
         spin_lock(&cpufreq_stats_lock);
         stat->last_index = new_index;
 #ifdef CONFIG_CPU_FREQ_STAT_DETAILS