staging:iio:ad9951: 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/staging/iio/frequency/ad9951.c b/drivers/staging/iio/frequency/ad9951.c
index 0094c2f392ad6dcfcc3167071ac24b79991a59df..5e8990a0210bf1d297d4eb8134c532fc17ff78fb 100644 (file)
--- a/drivers/staging/iio/frequency/ad9951.c
+++ b/drivers/staging/iio/frequency/ad9951.c
@@ -60,7 +60,6 @@ static ssize_t ad9951_set_parameter(struct device *dev,
                                        const char *buf,
                                        size_t len)
 {
-       struct spi_message msg;
        struct spi_transfer xfer;
        int ret;
        struct ad9951_config *config = (struct ad9951_config *)buf;
@@ -71,36 +70,28 @@ static ssize_t ad9951_set_parameter(struct device *dev,
        xfer.tx_buf = &config->asf[0];
        mutex_lock(&st->lock);
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;
 
        xfer.len = 2;
        xfer.tx_buf = &config->arr[0];
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;
 
        xfer.len = 5;
        xfer.tx_buf = &config->ftw0[0];
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;
 
        xfer.len = 3;
        xfer.tx_buf = &config->ftw1[0];
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;
 error_ret:
@@ -113,7 +104,6 @@ static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9951_set_parameter, 0);
 
 static void ad9951_init(struct ad9951_state *st)
 {
-       struct spi_message msg;
        struct spi_transfer xfer;
        int ret;
        u8 cfr[5];
@@ -129,9 +119,7 @@ static void ad9951_init(struct ad9951_state *st)
        xfer.len = 5;
        xfer.tx_buf = 𝔠
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;
 
@@ -143,9 +131,7 @@ static void ad9951_init(struct ad9951_state *st)
        xfer.len = 4;
        xfer.tx_buf = 𝔠
 
-       spi_message_init(&msg);
-       spi_message_add_tail(&xfer, &msg);
-       ret = spi_sync(st->sdev, &msg);
+       ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret)
                goto error_ret;