staging:iio:adis16080: be16 cleanups

The sample buffer contains big endian 16bit words. So use the be16 datatype for
the buffer and use the proper helper functions for endianness conversion instead
of openconding it.

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

diff --git a/drivers/staging/iio/gyro/adis16080_core.c b/drivers/staging/iio/gyro/adis16080_core.c
index ddeae163982a2a531c7800427493c4fd572de059..d033b6f486a6baefb548ed26eac4df052882aca7 100644 (file)
--- a/drivers/staging/iio/gyro/adis16080_core.c
+++ b/drivers/staging/iio/gyro/adis16080_core.c
@@ -39,7 +39,7 @@ struct adis16080_state {
        struct spi_device               *us;
        struct mutex                    buf_lock;
 
-       u8 buf[2] ____cacheline_aligned;
+       __be16 buf ____cacheline_aligned;
 };
 
 static int adis16080_read_sample(struct iio_dev *indio_dev,
@@ -60,8 +60,7 @@ static int adis16080_read_sample(struct iio_dev *indio_dev,
        };
 
        mutex_lock(&st->buf_lock);
-       st->buf[0] = addr >> 8;
-       st->buf[1] = addr;
+       st->buf = cpu_to_be16(addr | ADIS16080_DIN_WRITE);
 
        spi_message_init(&m);
        spi_message_add_tail(&t[0], &m);
@@ -69,7 +68,7 @@ static int adis16080_read_sample(struct iio_dev *indio_dev,
 
        ret = spi_sync(st->us, &m);
        if (ret == 0)
-               *val = sign_extend32(((st->buf[0] & 0xF) << 8) | st->buf[1], 11);
+               *val = sign_extend32(be16_to_cpu(st->buf), 11);
        mutex_unlock(&st->buf_lock);
 
        return ret;