From 2d4fa7b4c6f8080ced2e8237c9f46fb1fc110d64 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Thu, 19 Oct 2017 19:05:48 +0200 Subject: thermal/drivers/hisi: Remove pointless lock The threaded interrupt inspect the sensors structure to look in the temp threshold field, but this field is read-only in all the code, except in the probe function before the threaded interrupt is set. In other words there is not race window in the threaded interrupt when reading the field value. Signed-off-by: Daniel Lezcano Reviewed-by: Leo Yan Signed-off-by: Eduardo Valentin --- drivers/thermal/hisi_thermal.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'drivers/thermal') diff --git a/drivers/thermal/hisi_thermal.c b/drivers/thermal/hisi_thermal.c index f5231974504c..9ec5f290b850 100644 --- a/drivers/thermal/hisi_thermal.c +++ b/drivers/thermal/hisi_thermal.c @@ -221,14 +221,10 @@ static irqreturn_t hisi_thermal_alarm_irq(int irq, void *dev) static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev) { struct hisi_thermal_data *data = dev; - struct hisi_thermal_sensor *sensor; - - mutex_lock(&data->thermal_lock); - sensor = &data->sensors; + struct hisi_thermal_sensor *sensor = &data->sensors; dev_crit(&data->pdev->dev, "THERMAL ALARM: T > %d\n", sensor->thres_temp); - mutex_unlock(&data->thermal_lock); thermal_zone_device_update(data->sensors.tzd, THERMAL_EVENT_UNSPECIFIED); -- cgit v1.2.3