diff options
Diffstat (limited to 'drivers/hwmon/ina2xx.c')
| -rw-r--r-- | drivers/hwmon/ina2xx.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index bfd3f3eeabcd..e01feba909c3 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -223,6 +223,7 @@ static int ina2xx_probe(struct i2c_client *client, struct device *hwmon_dev; long shunt = 10000; /* default shunt value 10mOhms */ u32 val; + int ret; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) return -ENODEV; @@ -247,12 +248,25 @@ static int ina2xx_probe(struct i2c_client *client, data->config = &ina2xx_config[data->kind]; /* device configuration */ - i2c_smbus_write_word_swapped(client, INA2XX_CONFIG, - data->config->config_default); - /* set current LSB to 1mA, shunt is in uOhms */ - /* (equation 13 in datasheet) */ - i2c_smbus_write_word_swapped(client, INA2XX_CALIBRATION, - data->config->calibration_factor / shunt); + ret = i2c_smbus_write_word_swapped(client, INA2XX_CONFIG, + data->config->config_default); + if (ret < 0) { + dev_err(dev, + "error writing to the config register: %d", ret); + return -ENODEV; + } + + /* + * Set current LSB to 1mA, shunt is in uOhms + * (equation 13 in datasheet). + */ + ret = i2c_smbus_write_word_swapped(client, INA2XX_CALIBRATION, + data->config->calibration_factor / shunt); + if (ret < 0) { + dev_err(dev, + "error writing to the calibration register: %d", ret); + return -ENODEV; + } data->client = client; mutex_init(&data->update_lock); |