1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c
index 2f1a863a8e15..b4d3116cfdaf 100644
--- a/drivers/thermal/power_allocator.c
+++ b/drivers/thermal/power_allocator.c
@@ -529,7 +529,9 @@ static void allow_maximum_power(struct thermal_zone_device *tz)
                         continue;
 
                 instance->target = 0;
+                mutex_lock(&instance->cdev->lock);
                 instance->cdev->updated = false;
+                mutex_unlock(&instance->cdev->lock);
                 thermal_cdev_update(instance->cdev);
         }
 }