staging:iio:adis16260: Use sign_extend32() instead of open-coding 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/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c
index 55e67959b054346fc3c23b13afa3a67477f47b54..f060452f367e698493852e24df908fc1c31f7632 100644 (file)
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -277,9 +277,7 @@ static int adis16260_read_raw(struct iio_dev *indio_dev,
                        mutex_unlock(&indio_dev->mlock);
                        return ret;
                }
-               val16 &= (1 << bits) - 1;
-               val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
-               *val = val16;
+               *val = sign_extend32(val16, bits - 1);
                mutex_unlock(&indio_dev->mlock);
                return IIO_VAL_INT;
        case IIO_CHAN_INFO_CALIBSCALE: