Commit 37e05ea2 authored by Marcus Folkesson's avatar Marcus Folkesson Committed by Greg Kroah-Hartman
Browse files

iio: adc: mcp3911: make use of the sign bit 



[ Upstream commit 8f89e33b ]

The device supports negative values as well.

Fixes: 3a89b289 ("iio: adc: add support for mcp3911")
Signed-off-by: default avatarMarcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220722130726.7627-2-marcus.folkesson@gmail.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent e7cf5a0c

drivers/iio/adc/mcp3911.c

+2 −0
Original line number Diff line number Diff line
@@ -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;