diff mbox series

[v4,1/9] iio: adc: mcp3911: make use of the sign bit

Message ID 20220722130726.7627-2-marcus.folkesson@gmail.com (mailing list archive)
State Accepted
Headers show
Series Improve MCP3911 driver | expand

Commit Message

Marcus Folkesson July 22, 2022, 1:07 p.m. UTC 
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>
---
 drivers/iio/adc/mcp3911.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

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;