[PATCH 2/2] iio: light: cm3323: use dev_err_probe() in probe path

[Aldo Conte]

Replace dev_err() calls with dev_err_probe() in cm3323_init() and
cm3323_probe(). cm3323_init() is called by cm3323_probe() ,  so using
dev_err_probe() ensures that deferred probing is handled
correctly and simplifies error paths.

Remove the redundant error message in cm3323_probe().

Tested on a Raspberry Pi 3B using i2c-stub. The driver probes
successfully and successfully read integration_time after this change.

Signed-off-by: Aldo Conte <aldocontelk@xxxxxxxxx>
---
 drivers/iio/light/cm3323.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c
index 0fe61b8a7029..43c2929fc724 100644
--- a/drivers/iio/light/cm3323.c
+++ b/drivers/iio/light/cm3323.c
@@ -82,20 +82,18 @@ static int cm3323_init(struct iio_dev *indio_dev)
 	struct cm3323_data *data = iio_priv(indio_dev);
 
 	ret = i2c_smbus_read_word_data(data->client, CM3323_CMD_CONF);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_conf\n");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(&data->client->dev, ret,
+				     "Error reading reg_conf\n");
 
 	/* enable sensor and set auto force mode */
 	ret &= ~(CM3323_CONF_SD_BIT | CM3323_CONF_AF_BIT);
 	data->reg_conf = ret;
 
 	ret = i2c_smbus_write_word_data(data->client, CM3323_CMD_CONF, data->reg_conf);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_conf\n");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(&data->client->dev, ret,
+				     "Error writing reg_conf\n");
 
 	return 0;
 }
@@ -236,10 +234,9 @@ static int cm3323_probe(struct i2c_client *client)
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = cm3323_init(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "cm3323 chip init failed\n");
+	if (ret < 0)
 		return ret;
-	}
+
 
 	ret = devm_add_action_or_reset(&client->dev, cm3323_disable, indio_dev);
 	if (ret < 0)
-- 
2.53.0