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Date: Tue, 6 Sep 2022 15:29:20 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Marcus Folkesson <marcus.folkesson@...il.com>, Andy Shevchenko <andy.shevchenko@...il.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.19 012/155] iio: adc: mcp3911: make use of the sign bit From: Marcus Folkesson <marcus.folkesson@...il.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@...il.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com> Link: https://lore.kernel.org/r/20220722130726.7627-2-marcus.folkesson@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com> Signed-off-by: Sasha Levin <sashal@...nel.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; -- 2.35.1
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