From c660abab5c7edbc9ec9cd3b7b8611e7bac01d0ac Mon Sep 17 00:00:00 2001
From: Karim Eshapa <karim.eshapa@gmail.com>
Date: Tue, 12 Jun 2018 18:48:38 +0200
Subject: [PATCH] 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>
---
drivers/staging/iio/accel/adis16203.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
index b3e4571340ab4..5cc96c8086b59 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;
--
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