hwmon: (sht3x) Fix error handling

Handling of errors when reading status, temperature, and humidity returns
the error number as negative attribute value. Fix it up by returning
the error as return value.

Fixes: a0ac418c6007c ("hwmon: (sht3x) convert some of sysfs interface to hwmon")
Cc: JuenKit Yip <JuenKit_Yip@hotmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/sht3x.c b/drivers/hwmon/sht3x.c
index 557ad3e7752a97a9e80a0be31ed1d0314ea1c106..f36c0229328fa3f68078454a248cee3391f95f0e 100644 (file)
--- a/drivers/hwmon/sht3x.c
+++ b/drivers/hwmon/sht3x.c
@@ -291,24 +291,26 @@ out:
        return data;
 }
 
-static int temp1_input_read(struct device *dev)
+static int temp1_input_read(struct device *dev, long *temp)
 {
        struct sht3x_data *data = sht3x_update_client(dev);
 
        if (IS_ERR(data))
                return PTR_ERR(data);
 
-       return data->temperature;
+       *temp = data->temperature;
+       return 0;
 }
 
-static int humidity1_input_read(struct device *dev)
+static int humidity1_input_read(struct device *dev, long *humidity)
 {
        struct sht3x_data *data = sht3x_update_client(dev);
 
        if (IS_ERR(data))
                return PTR_ERR(data);
 
-       return data->humidity;
+       *humidity = data->humidity;
+       return 0;
 }
 
 /*
@@ -706,6 +708,7 @@ static int sht3x_read(struct device *dev, enum hwmon_sensor_types type,
                      u32 attr, int channel, long *val)
 {
        enum sht3x_limits index;
+       int ret;
 
        switch (type) {
        case hwmon_chip:
@@ -720,10 +723,12 @@ static int sht3x_read(struct device *dev, enum hwmon_sensor_types type,
        case hwmon_temp:
                switch (attr) {
                case hwmon_temp_input:
-                       *val = temp1_input_read(dev);
-                       break;
+                       return temp1_input_read(dev, val);
                case hwmon_temp_alarm:
-                       *val = temp1_alarm_read(dev);
+                       ret = temp1_alarm_read(dev);
+                       if (ret < 0)
+                               return ret;
+                       *val = ret;
                        break;
                case hwmon_temp_max:
                        index = limit_max;
@@ -748,10 +753,12 @@ static int sht3x_read(struct device *dev, enum hwmon_sensor_types type,
        case hwmon_humidity:
                switch (attr) {
                case hwmon_humidity_input:
-                       *val = humidity1_input_read(dev);
-                       break;
+                       return humidity1_input_read(dev, val);
                case hwmon_humidity_alarm:
-                       *val = humidity1_alarm_read(dev);
+                       ret = humidity1_alarm_read(dev);
+                       if (ret < 0)
+                               return ret;
+                       *val = ret;
                        break;
                case hwmon_humidity_max:
                        index = limit_max;