Use sign_extend32 function instead of manually coding it. Also, adjust a
switch block to explicitly match channels and return -EINVAL as default
case which improves code readability.
Signed-off-by: Shreeya Patel <shreeya.patel23498@xxxxxxxxx>
---
drivers/staging/iio/accel/adis16209.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c
index 6101212..f7c228b 100644
--- a/drivers/staging/iio/accel/adis16209.c
+++ b/drivers/staging/iio/accel/adis16209.c
@@ -150,10 +150,16 @@ static int adis16209_read_raw(struct iio_dev *indio_dev,
switch (chan->type) {
case IIO_VOLTAGE:
*val = 0;
- if (chan->channel == 0)
+ switch (chan->channel) {
+ case 0:
*val2 = 305180;
- else
+ break;
+ case 1:
*val2 = 610500;
+ break;
+ default:
+ return -EINVAL;
+ }
return IIO_VAL_INT_PLUS_MICRO;
case IIO_TEMP:
*val = -470;
@@ -187,9 +193,8 @@ 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;
--
2.7.4
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