rtc: max6900: remove useless indirection

max6900_i2c_read_time and max6900_i2c_set_time are only used after casting
dev to an i2c_client. Remove that useless indirection.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-max6900.c

@@ -139,8 +139,9 @@ static int max6900_i2c_write_regs(struct i2c_client *client, u8 const *buf)
 	return -EIO;
 }
 
-static int max6900_i2c_read_time(struct i2c_client *client, struct rtc_time *tm)
+static int max6900_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	int rc;
 	u8 regs[MAX6900_REG_LEN];
 
@@ -165,9 +166,9 @@ static int max6900_i2c_clear_write_protect(struct i2c_client *client)
 	return i2c_smbus_write_byte_data(client, MAX6900_REG_CONTROL_WRITE, 0);
 }
 
-static int
-max6900_i2c_set_time(struct i2c_client *client, struct rtc_time const *tm)
+static int max6900_rtc_set_time(struct device *dev, struct rtc_time *tm)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	u8 regs[MAX6900_REG_LEN];
 	int rc;
 
@@ -193,16 +194,6 @@ max6900_i2c_set_time(struct i2c_client *client, struct rtc_time const *tm)
 	return 0;
 }
 
-static int max6900_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
-	return max6900_i2c_read_time(to_i2c_client(dev), tm);
-}
-
-static int max6900_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-	return max6900_i2c_set_time(to_i2c_client(dev), tm);
-}
-
 static const struct rtc_class_ops max6900_rtc_ops = {
 	.read_time = max6900_rtc_read_time,
 	.set_time = max6900_rtc_set_time,