Staging: iio: accel: adis16201: Use sign_extend32 function

Use sign_extned32() for 32 bit sign extending rather than hard coding.

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c
index 87ad3d4..526dde4 100644 (file)
--- a/drivers/staging/iio/accel/adis16201.c
+++ b/drivers/staging/iio/accel/adis16201.c
@@ -173,9 +173,8 @@ static int adis16201_read_raw(struct iio_dev *indio_dev,
                ret = adis_read_reg_16(st, addr, &val16);
                if (ret)
                        return ret;
-               val16 &= (1 << bits) - 1;
-               val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
-               *val = val16;
+
+               *val = sign_extend32(val16, bits - 1);
                return IIO_VAL_INT;
        }