linux-kernel - [PATCH v2 4/8] iio: inkern: return valid type on raw to processed conversion

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Date:   Mon,  7 Jun 2021 10:47:14 -0400
From:   Liam Beguin <liambeguin@...il.com>
To:     liambeguin@...il.com, peda@...ntia.se, jic23@...nel.org,
        lars@...afoo.de, pmeerw@...erw.net
Cc:     linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, robh+dt@...nel.org
Subject: [PATCH v2 4/8] iio: inkern: return valid type on raw to processed conversion

From: Liam Beguin <lvb@...hos.com>

iio_convert_raw_to_processed_unlocked() applies the offset and scale of
a channel on it's raw value.
The processed value returned is always an integer. Return IIO_VAL_INT so
that consumers can use this return value directly.

Signed-off-by: Liam Beguin <lvb@...hos.com>
---
 drivers/iio/inkern.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 0b5667f22b1d..00d234e87234 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -618,7 +618,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 		 * raw value and return.
 		 */
 		*processed = raw * scale;
-		return 0;
+		return IIO_VAL_INT;
 	}
 
 	switch (scale_type) {
@@ -652,7 +652,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 		return -EINVAL;
 	}
 
-	return 0;
+	return IIO_VAL_INT;
 }
 
 int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
-- 
2.30.1.489.g328c10930387