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staging:iio:accel:adis16203: sign extend function rather code duplication 

Use sign_extend32 kernel function instead of code duplication.
This function is also safe for 16 bits.

Signed-off-by: Karim Eshapa <karim.eshapa@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Karim Eshapa 2018-06-12 18:48:38 +02:00 committed by Jonathan Cameron
parent 727198f99e
commit c660abab5c
1 changed files with 1 additions and 5 deletions
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6
drivers/staging/iio/accel/adis16203.c
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@ -168,7 +168,6 @@ static int adis16203_read_raw(struct iio_dev *indio_dev,
{
struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
s16 val16;
@ -202,14 +201,11 @@ static int adis16203_read_raw(struct iio_dev *indio_dev,
*val = 25000 / -470 - 1278; /* 25 C = 1278 */
return IIO_VAL_INT;
case IIO_CHAN_INFO_CALIBBIAS:
bits = 14;
addr = adis16203_addresses[chan->scan_index];
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, 13);
return IIO_VAL_INT;
default:
return -EINVAL;