[PATCH] iio: dac: use int instead of u32 to store error codes

[Qianfeng Rong]

Use int instead of unsigned int for 'ret' variable to store negative error
codes returned by ad5421_write_unlocked() and ad5360_write_unlocked().

Signed-off-by: Qianfeng Rong <rongqianfeng@xxxxxxxx>
---
 drivers/iio/dac/ad5360.c | 2 +-
 drivers/iio/dac/ad5421.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c
index a57b0a093112..8271849b1c83 100644
--- a/drivers/iio/dac/ad5360.c
+++ b/drivers/iio/dac/ad5360.c
@@ -262,7 +262,7 @@ static int ad5360_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
 	unsigned int clr)
 {
 	struct ad5360_state *st = iio_priv(indio_dev);
-	unsigned int ret;
+	int ret;
 
 	mutex_lock(&st->lock);
 
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 1462ee640b16..d9d7031c4432 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -186,7 +186,7 @@ static int ad5421_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
 	unsigned int clr)
 {
 	struct ad5421_state *st = iio_priv(indio_dev);
-	unsigned int ret;
+	int ret;
 
 	mutex_lock(&st->lock);
 
-- 
2.34.1