In this driver LEDs are registered using devm_led_classdev_register()
so they are automatically unregistered after module's remove() is done.
led_classdev_unregister() calls module's led_set_brightness() to turn off
the LEDs and that callback uses resources which were destroyed already
in module's remove() so use devm API instead of remove().
Signed-off-by: George Stark <gnstark@xxxxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
---
drivers/leds/leds-lm3532.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
index 13662a4aa1f2..8c90701dc50d 100644
--- a/drivers/leds/leds-lm3532.c
+++ b/drivers/leds/leds-lm3532.c
@@ -542,6 +542,13 @@ static int lm3532_parse_als(struct lm3532_data *priv)
return ret;
}
+static void gpio_set_low_action(void *data)
+{
+ struct lm3532_data *priv = data;
+
+ gpiod_direction_output(priv->enable_gpio, 0);
+}
+
static int lm3532_parse_node(struct lm3532_data *priv)
{
struct fwnode_handle *child = NULL;
@@ -556,6 +563,12 @@ static int lm3532_parse_node(struct lm3532_data *priv)
if (IS_ERR(priv->enable_gpio))
priv->enable_gpio = NULL;
+ if (priv->enable_gpio) {
+ ret = devm_add_action(&priv->client->dev, gpio_set_low_action, priv);
+ if (ret)
+ return ret;
+ }
+
priv->regulator = devm_regulator_get(&priv->client->dev, "vin");
if (IS_ERR(priv->regulator))
priv->regulator = NULL;
@@ -691,7 +704,10 @@ static int lm3532_probe(struct i2c_client *client)
return ret;
}
- mutex_init(&drvdata->lock);
+ ret = devm_mutex_init(&client->dev, &drvdata->lock);
+ if (ret)
+ return ret;
+
i2c_set_clientdata(client, drvdata);
ret = lm3532_parse_node(drvdata);
@@ -703,16 +719,6 @@ static int lm3532_probe(struct i2c_client *client)
return ret;
}
-static void lm3532_remove(struct i2c_client *client)
-{
- struct lm3532_data *drvdata = i2c_get_clientdata(client);
-
- mutex_destroy(&drvdata->lock);
-
- if (drvdata->enable_gpio)
- gpiod_direction_output(drvdata->enable_gpio, 0);
-}
-
static const struct of_device_id of_lm3532_leds_match[] = {
{ .compatible = "ti,lm3532", },
{},
@@ -727,7 +733,6 @@ MODULE_DEVICE_TABLE(i2c, lm3532_id);
static struct i2c_driver lm3532_i2c_driver = {
.probe = lm3532_probe,
- .remove = lm3532_remove,
.id_table = lm3532_id,
.driver = {
.name = LM3532_NAME,
--
2.25.1
