From: Marcus Folkesson marcus.folkesson@gmail.com
[ Upstream commit 8f89e33bf040bbef66386c426198622180233178 ]
The device supports negative values as well.
Fixes: 3a89b289df5d ("iio: adc: add support for mcp3911") Signed-off-by: Marcus Folkesson marcus.folkesson@gmail.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Link: https://lore.kernel.org/r/20220722130726.7627-2-marcus.folkesson@gmail.com Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/adc/mcp3911.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c index 1cb4590fe4125..f581cefb67195 100644 --- a/drivers/iio/adc/mcp3911.c +++ b/drivers/iio/adc/mcp3911.c @@ -113,6 +113,8 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev, if (ret) goto out;
+ *val = sign_extend32(*val, 23); + ret = IIO_VAL_INT; break;