[PATCH 5.4 034/222] cpuidle: teo: Fix intervals[] array indexing bug
From: Greg Kroah-Hartman
Date: Wed Jan 22 2020 - 08:19:32 EST
From: Ikjoon Jang <ikjn@xxxxxxxxxxxx>
commit 57388a2ccb6c2f554fee39772886c69b796dde53 upstream.
Fix a simple bug in rotating array index.
Fixes: b26bf6ab716f ("cpuidle: New timer events oriented governor for tickless systems")
Signed-off-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx>
Cc: 5.1+ <stable@xxxxxxxxxxxxxxx> # 5.1+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpuidle/governors/teo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/cpuidle/governors/teo.c
+++ b/drivers/cpuidle/governors/teo.c
@@ -194,7 +194,7 @@ static void teo_update(struct cpuidle_dr
* pattern detection.
*/
cpu_data->intervals[cpu_data->interval_idx++] = measured_us;
- if (cpu_data->interval_idx > INTERVALS)
+ if (cpu_data->interval_idx >= INTERVALS)
cpu_data->interval_idx = 0;
}