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[v2,07/13] iio: ad7266: Use scan_type when processing raw data

Message ID 20211104082413.3681212-8-gwendal@chromium.org (mailing list archive)
State Accepted
Headers show
Series iio: Use scan_type shift and realbits when processing raw data | expand

Commit Message

Gwendal Grignou Nov. 4, 2021, 8:24 a.m. UTC 
Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
 drivers/iio/adc/ad7266.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index a8ec3efd659ed..1d345d66742d8 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -159,7 +159,8 @@  static int ad7266_read_raw(struct iio_dev *indio_dev,
 
 		*val = (*val >> 2) & 0xfff;
 		if (chan->scan_type.sign == 's')
-			*val = sign_extend32(*val, 11);
+			*val = sign_extend32(*val,
+					     chan->scan_type.realbits - 1);
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE: