6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Lechner <dlechner@xxxxxxxxxxxx>
[ Upstream commit 62dd96ac9cdf2814f41cfc55ecaf22a28aad6ccb ]
Fix reading unsigned data from the AD4000 ADC via the _raw sysfs
attribute by ensuring that *val is set before returning from
ad4000_single_conversion(). This was not being set in any code path
and was causing the attribute to return a random value.
Fixes: 938fd562b974 ("iio: adc: Add support for AD4000")
Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx>
Link: https://patch.msgid.link/20241030-iio-adc-ad4000-fix-reading-unsigned-data-v1-1-2e28dd75fe29@xxxxxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iio/adc/ad4000.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c
index 6ea4912450849..fc9c9807f89d2 100644
--- a/drivers/iio/adc/ad4000.c
+++ b/drivers/iio/adc/ad4000.c
@@ -344,6 +344,8 @@ static int ad4000_single_conversion(struct iio_dev *indio_dev,
if (chan->scan_type.sign == 's')
*val = sign_extend32(sample, chan->scan_type.realbits - 1);
+ else
+ *val = sample;
return IIO_VAL_INT;
}
--
2.43.0
