iio:adxrs450: Use spi_sync_transfer()

Use the spi_sync_transfer() helper function instead of open-coding it. Makes
the code a bit shorter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c
index c1f40efbf6394e3f41da0037de93483d81ffb26f..1e546ba7ba45e1c92acf9ae926b9c29c386785ef 100644 (file)
--- a/drivers/iio/gyro/adxrs450.c
+++ b/drivers/iio/gyro/adxrs450.c
@@ -90,7 +90,6 @@ static int adxrs450_spi_read_reg_16(struct iio_dev *indio_dev,
                                    u8 reg_address,
                                    u16 *val)
 {
-       struct spi_message msg;
        struct adxrs450_state *st = iio_priv(indio_dev);
        u32 tx;
        int ret;
@@ -114,10 +113,7 @@ static int adxrs450_spi_read_reg_16(struct iio_dev *indio_dev,
                tx |= ADXRS450_P;
 
        st->tx = cpu_to_be32(tx);
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfers[0], &msg);
-       spi_message_add_tail(&xfers[1], &msg);
-       ret = spi_sync(st->us, &msg);
+       ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
        if (ret) {
                dev_err(&st->us->dev, "problem while reading 16 bit register 0x%02x\n",
                                reg_address);
@@ -169,7 +165,6 @@ static int adxrs450_spi_write_reg_16(struct iio_dev *indio_dev,
  **/
 static int adxrs450_spi_sensor_data(struct iio_dev *indio_dev, s16 *val)
 {
-       struct spi_message msg;
        struct adxrs450_state *st = iio_priv(indio_dev);
        int ret;
        struct spi_transfer xfers[] = {
@@ -188,10 +183,7 @@ static int adxrs450_spi_sensor_data(struct iio_dev *indio_dev, s16 *val)
        mutex_lock(&st->buf_lock);
        st->tx = cpu_to_be32(ADXRS450_SENSOR_DATA);
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfers[0], &msg);
-       spi_message_add_tail(&xfers[1], &msg);
-       ret = spi_sync(st->us, &msg);
+       ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
        if (ret) {
                dev_err(&st->us->dev, "Problem while reading sensor data\n");
                goto error_ret;