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/gl518sm.c b/drivers/hwmon/gl518sm.c
index e7ae574..a13e2da 100644
--- a/drivers/hwmon/gl518sm.c
+++ b/drivers/hwmon/gl518sm.c
@@ -591,7 +591,7 @@
 static int gl518_read_value(struct i2c_client *client, u8 reg)
 {
 	if ((reg >= 0x07) && (reg <= 0x0c))
-		return swab16(i2c_smbus_read_word_data(client, reg));
+		return i2c_smbus_read_word_swapped(client, reg);
 	else
 		return i2c_smbus_read_byte_data(client, reg);
 }
@@ -599,7 +599,7 @@
 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)
 {
 	if ((reg >= 0x07) && (reg <= 0x0c))
-		return i2c_smbus_write_word_data(client, reg, swab16(value));
+		return i2c_smbus_write_word_swapped(client, reg, value);
 	else
 		return i2c_smbus_write_byte_data(client, reg, value);
 }