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 de7e706..6deaaf5 100644 (file)
--- 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;
 }