The return type "unsigned int" was used by the ltr501_match_samp_freq function
despite of the aspect that it will eventually return a negative error code.
So, change to signed int and get the value by reference in the parameters.
Done with the help of Coccinelle.
Signed-off-by: Lucas Tanure <tanure@xxxxxxxxx>
---
drivers/iio/light/ltr501.c | 27 +++++++++++++++------------
1 file changed, 15 insertions(+), 12 deletions(-)
diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 809a961..99e8b12 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -180,16 +180,19 @@ static const struct ltr501_samp_table ltr501_ps_samp_table[] = {
{500000, 2000000}
};
-static unsigned int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
- int len, int val, int val2)
+static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
+ int len, int val, int val2,
+ int *ret)
{
int i, freq;
freq = val * 1000000 + val2;
for (i = 0; i < len; i++) {
- if (tab[i].freq_val == freq)
- return i;
+ if (tab[i].freq_val == freq) {
+ *ret = i;
+ return 0;
+ }
}
return -EINVAL;
@@ -236,12 +239,12 @@ static int ltr501_als_write_samp_freq(struct ltr501_data *data,
{
int i, ret;
- i = ltr501_match_samp_freq(ltr501_als_samp_table,
+ ret = ltr501_match_samp_freq(ltr501_als_samp_table,
ARRAY_SIZE(ltr501_als_samp_table),
- val, val2);
+ val, val2, &i);
- if (i < 0)
- return i;
+ if (ret < 0)
+ return ret;
mutex_lock(&data->lock_als);
ret = regmap_field_write(data->reg_als_rate, i);
@@ -255,12 +258,12 @@ static int ltr501_ps_write_samp_freq(struct ltr501_data *data,
{
int i, ret;
- i = ltr501_match_samp_freq(ltr501_ps_samp_table,
+ ret = ltr501_match_samp_freq(ltr501_ps_samp_table,
ARRAY_SIZE(ltr501_ps_samp_table),
- val, val2);
+ val, val2, &i);
- if (i < 0)
- return i;
+ if (ret < 0)
+ return ret;
mutex_lock(&data->lock_ps);
ret = regmap_field_write(data->reg_ps_rate, i);
--
2.7.0
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