If the chip isn't powered, this call is likely to return an error.
Without a log here the driver will silently fail to probe. Common errors
are ENXIO (when the chip isn't powered) and ETIMEDOUT (when the i2c bus
isn't powered).
Signed-off-by: Aren Moynihan <aren@xxxxxxxxxxxxxxxxx>
---
drivers/iio/light/stk3310.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
index bfa090538df7..c0954a63a143 100644
--- a/drivers/iio/light/stk3310.c
+++ b/drivers/iio/light/stk3310.c
@@ -472,8 +472,10 @@ static int stk3310_init(struct iio_dev *indio_dev)
struct i2c_client *client = data->client;
ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(&client->dev, "failed to read chip id: %d", ret);
return ret;
+ }
if (chipid != STK3310_CHIP_ID_VAL &&
chipid != STK3311_CHIP_ID_VAL &&
--
2.44.0
