[PATCH v1] drivers: adt7470: check the return value of adt7470_read_temperatures

[Li Zhong <floridsleeves@xxxxxxxxx>]

adt7470_read_temperatures() fails and returns error when operations on
regmap fail. adt7470_update_thread() currently does not check for it and
propagate the error.

Signed-off-by: Li Zhong <floridsleeves@xxxxxxxxx>
---
 drivers/hwmon/adt7470.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index c67cd037a93f..0aadb2dc067f 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -289,12 +289,16 @@ static int adt7470_update_thread(void *p)
 {
 	struct i2c_client *client = p;
 	struct adt7470_data *data = i2c_get_clientdata(client);
+	int err;
 
 	while (!kthread_should_stop()) {
 		mutex_lock(&data->lock);
-		adt7470_read_temperatures(data);
+		err = adt7470_read_temperatures(data);
 		mutex_unlock(&data->lock);
 
+		if (err)
+			return err;
+
 		if (kthread_should_stop())
 			break;
 
-- 
2.25.1