hwmon: Use i2c_smbus_{read,write}_word_swapped
Make use of the new i2c_smbus_{read,write}_word_swapped functions.
This makes the driver code more compact and readable. It also ensures
proper error handling.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c
index e113634..ef1ac996 100644
--- a/drivers/hwmon/ds1621.c
+++ b/drivers/hwmon/ds1621.c
@@ -80,24 +80,6 @@
u8 conf; /* Register encoding, combined */
};
-/* Temperature registers are word-sized.
- DS1621 uses a high-byte first convention, which is exactly opposite to
- the SMBus standard. */
-static int ds1621_read_temp(struct i2c_client *client, u8 reg)
-{
- int ret;
-
- ret = i2c_smbus_read_word_data(client, reg);
- if (ret < 0)
- return ret;
- return swab16(ret);
-}
-
-static int ds1621_write_temp(struct i2c_client *client, u8 reg, u16 value)
-{
- return i2c_smbus_write_word_data(client, reg, swab16(value));
-}
-
static void ds1621_init_client(struct i2c_client *client)
{
u8 conf, new_conf;
@@ -136,7 +118,7 @@
data->conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
for (i = 0; i < ARRAY_SIZE(data->temp); i++)
- data->temp[i] = ds1621_read_temp(client,
+ data->temp[i] = i2c_smbus_read_word_swapped(client,
DS1621_REG_TEMP[i]);
/* reset alarms if necessary */
@@ -177,8 +159,8 @@
mutex_lock(&data->update_lock);
data->temp[attr->index] = val;
- ds1621_write_temp(client, DS1621_REG_TEMP[attr->index],
- data->temp[attr->index]);
+ i2c_smbus_write_word_swapped(client, DS1621_REG_TEMP[attr->index],
+ data->temp[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}