From: Ikjoon Jang <ikjn@chromium.org>
Date: Fri, 10 Jan 2020 17:47:12 +0000 (+0800)
Subject: cpuidle: teo: Fix intervals[] array indexing bug
X-Git-Tag: v5.5-rc7~29^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=57388a2ccb6c2f554fee39772886c69b796dde53;p=linux-2.6-block.git

cpuidle: teo: Fix intervals[] array indexing bug

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@chromium.org>
Cc: 5.1+ <stable@vger.kernel.org> # 5.1+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/cpuidle/governors/teo.c b/drivers/cpuidle/governors/teo.c
index de7e706efd46..6deaaf5f05b5 100644
--- a/drivers/cpuidle/governors/teo.c
+++ b/drivers/cpuidle/governors/teo.c
@@ -198,7 +198,7 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
 	 * pattern detection.
 	 */
 	cpu_data->intervals[cpu_data->interval_idx++] = measured_ns;
-	if (cpu_data->interval_idx > INTERVALS)
+	if (cpu_data->interval_idx >= INTERVALS)
 		cpu_data->interval_idx = 0;
 }