diff options
Diffstat (limited to 'drivers/hwmon/tmp421.c')
| -rw-r--r-- | drivers/hwmon/tmp421.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c index 20924343431b..d3a786b36d6a 100644 --- a/drivers/hwmon/tmp421.c +++ b/drivers/hwmon/tmp421.c @@ -62,9 +62,9 @@ static const u8 TMP421_TEMP_LSB[4] = { 0x10, 0x11, 0x12, 0x13 }; #define TMP423_DEVICE_ID 0x23 static const struct i2c_device_id tmp421_id[] = { - { "tmp421", tmp421 }, - { "tmp422", tmp422 }, - { "tmp423", tmp423 }, + { "tmp421", 2 }, + { "tmp422", 3 }, + { "tmp423", 4 }, { } }; MODULE_DEVICE_TABLE(i2c, tmp421_id); @@ -74,21 +74,23 @@ struct tmp421_data { struct mutex update_lock; char valid; unsigned long last_updated; - int kind; + int channels; u8 config; s16 temp[4]; }; static int temp_from_s16(s16 reg) { - int temp = reg; + /* Mask out status bits */ + int temp = reg & ~0xf; return (temp * 1000 + 128) / 256; } static int temp_from_u16(u16 reg) { - int temp = reg; + /* Mask out status bits */ + int temp = reg & ~0xf; /* Add offset for extended temperature range. */ temp -= 64 * 256; @@ -108,7 +110,7 @@ static struct tmp421_data *tmp421_update_device(struct device *dev) data->config = i2c_smbus_read_byte_data(client, TMP421_CONFIG_REG_1); - for (i = 0; i <= data->kind; i++) { + for (i = 0; i < data->channels; i++) { data->temp[i] = i2c_smbus_read_byte_data(client, TMP421_TEMP_MSB[i]) << 8; data->temp[i] |= i2c_smbus_read_byte_data(client, @@ -167,7 +169,7 @@ static mode_t tmp421_is_visible(struct kobject *kobj, struct attribute *a, devattr = container_of(a, struct device_attribute, attr); index = to_sensor_dev_attr(devattr)->index; - if (data->kind > index) + if (index < data->channels) return a->mode; return 0; @@ -275,7 +277,7 @@ static int tmp421_probe(struct i2c_client *client, i2c_set_clientdata(client, data); mutex_init(&data->update_lock); - data->kind = id->driver_data; + data->channels = id->driver_data; err = tmp421_init_client(client); if (err) |