[PATCH] iio: gp2ap020a00f: Fix signedness bug

From: Haowen Bai
Date: Thu Apr 14 2022 - 06:46:01 EST


function gp2ap020a00f_get_thresh_reg() is unsigned but returning -EINVAL
errcode, and thresh_reg_l is unsigned but receiving -EINVAL errcode. so
we have to change u8 -> s8.

Signed-off-by: Haowen Bai <baihaowen@xxxxxxxxx>
---
drivers/iio/light/gp2ap020a00f.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index b820041159f7..b0e62d3c6fa0 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -994,7 +994,7 @@ static irqreturn_t gp2ap020a00f_trigger_handler(int irq, void *data)
return IRQ_HANDLED;
}

-static u8 gp2ap020a00f_get_thresh_reg(const struct iio_chan_spec *chan,
+static s8 gp2ap020a00f_get_thresh_reg(const struct iio_chan_spec *chan,
enum iio_event_direction event_dir)
{
switch (chan->type) {
@@ -1025,7 +1025,7 @@ static int gp2ap020a00f_write_event_val(struct iio_dev *indio_dev,
struct gp2ap020a00f_data *data = iio_priv(indio_dev);
bool event_en = false;
u8 thresh_val_id;
- u8 thresh_reg_l;
+ s8 thresh_reg_l;
int err = 0;

mutex_lock(&data->lock);
@@ -1082,7 +1082,7 @@ static int gp2ap020a00f_read_event_val(struct iio_dev *indio_dev,
int *val, int *val2)
{
struct gp2ap020a00f_data *data = iio_priv(indio_dev);
- u8 thresh_reg_l;
+ s8 thresh_reg_l;
int err = IIO_VAL_INT;

mutex_lock(&data->lock);
--
2.7.4