diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/tmp421.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c index 89346ca6c9a9..af08bc985a13 100644 --- a/drivers/hwmon/tmp421.c +++ b/drivers/hwmon/tmp421.c @@ -89,6 +89,7 @@ MODULE_DEVICE_TABLE(of, tmp421_of_match); struct tmp421_channel { const char *label; + bool enabled; s16 temp; }; @@ -170,6 +171,9 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type, if (ret) return ret; + if (!tmp421->channel[channel].enabled) + return -ENODATA; + switch (attr) { case hwmon_temp_input: *val = temp_from_raw(tmp421->channel[channel].temp, @@ -323,6 +327,8 @@ static int tmp421_probe_child_from_dt(struct i2c_client *client, if (data->channel[i].label) data->temp_config[i] |= HWMON_T_LABEL; + data->channel[i].enabled = of_device_is_available(child); + return 0; } @@ -371,8 +377,10 @@ static int tmp421_probe(struct i2c_client *client) if (err) return err; - for (i = 0; i < data->channels; i++) + for (i = 0; i < data->channels; i++) { data->temp_config[i] = HWMON_T_INPUT | HWMON_T_FAULT; + data->channel[i].enabled = true; + } err = tmp421_probe_from_dt(client, data); if (err) |