From 90f4102ce59226954edbe960b2434d8b3da5f086 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Fri, 4 Nov 2011 12:00:47 +0100 Subject: 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 Acked-by: Jonathan Cameron Acked-by: Guenter Roeck Cc: Dirk Eibach Cc: "Mark M. Hoffman" Cc: Guillaume Ligneul --- drivers/hwmon/ds1621.c | 24 +++--------------------- 1 file changed, 3 insertions(+), 21 deletions(-) (limited to 'drivers/hwmon/ds1621.c') diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c index e11363467a8d..ef1ac996752e 100644 --- a/drivers/hwmon/ds1621.c +++ b/drivers/hwmon/ds1621.c @@ -80,24 +80,6 @@ struct ds1621_data { 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 @@ static struct ds1621_data *ds1621_update_client(struct device *dev) 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 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da, 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; } -- cgit v1.2.3