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authorKarim Eshapa <karim.eshapa@gmail.com>2018-06-12 18:48:38 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2018-06-16 19:04:53 +0100
commitc660abab5c7edbc9ec9cd3b7b8611e7bac01d0ac (patch)
treeba95d6788be827df8a48d479b27217dc4d386c10 /drivers/staging/iio
parent727198f99e276c7ce8fc63e90489f63ad886ed39 (diff)
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>
Diffstat (limited to 'drivers/staging/iio')
-rw-r--r--drivers/staging/iio/accel/adis16203.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
index b3e4571340ab..5cc96c8086b5 100644
--- a/drivers/staging/iio/accel/adis16203.c
+++ b/drivers/staging/iio/accel/adis16203.c
@@ -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;