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| author |   Marcus Folkesson <marcus.folkesson@gmail.com> | 2022-07-22 15:07:18 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-08-15 22:30:40 +0100 |
| commit | 8f89e33bf040bbef66386c426198622180233178 (patch) | |
| tree | ca908f0389835a9663b47822a29772c93be46de5 /drivers/iio | |
| parent | Linux 6.0-rc1 (diff) | |
| download | linux-dev-8f89e33bf040bbef66386c426198622180233178.tar.xz linux-dev-8f89e33bf040bbef66386c426198622180233178.zip | |
iio: adc: mcp3911: make use of the sign bit
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>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/mcp3911.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c index 1cb4590fe412..f581cefb6719 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; |