6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Lechner dlechner@baylibre.com
[ 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@baylibre.com Link: https://patch.msgid.link/20241030-iio-adc-ad4000-fix-reading-unsigned-data-v... Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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; }