Staging: iio: adis16209: Use sign_extend32 function

Use sign_extend32 function instead of manually coding
it.

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c
index 8ffde7ea94c4375e62f34b74d5d29e945c53b2fd..72a18cfe81eeef3e971027da4c7826a2d24e2b2e 100644 (file)
--- a/drivers/staging/iio/accel/adis16209.c
+++ b/drivers/staging/iio/accel/adis16209.c
@@ -212,9 +212,8 @@ static int adis16209_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;
        }
        return -EINVAL;