[PATCH v6 8/9] leds: an30259a: use devm_mutext_init for mutext initialization

[George Stark]

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 mutex which was destroyed already
in module's remove() so use devm API instead.

Signed-off-by: George Stark <gnst...@salutedevices.com>
---
 drivers/leds/leds-an30259a.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/leds/leds-an30259a.c b/drivers/leds/leds-an30259a.c
index 0216afed3b6e..decfca447d8a 100644
--- a/drivers/leds/leds-an30259a.c
+++ b/drivers/leds/leds-an30259a.c
@@ -283,7 +283,10 @@ static int an30259a_probe(struct i2c_client *client)
        if (err < 0)
                return err;
 
-       mutex_init(&chip->mutex);
+       err = devm_mutex_init(&client->dev, &chip->mutex);
+       if (err)
+               return err;
+
        chip->client = client;
        i2c_set_clientdata(client, chip);
 
@@ -317,17 +320,9 @@ static int an30259a_probe(struct i2c_client *client)
        return 0;
 
 exit:
-       mutex_destroy(&chip->mutex);
        return err;
 }
 
-static void an30259a_remove(struct i2c_client *client)
-{
-       struct an30259a *chip = i2c_get_clientdata(client);
-
-       mutex_destroy(&chip->mutex);
-}
-
 static const struct of_device_id an30259a_match_table[] = {
        { .compatible = "panasonic,an30259a", },
        { /* sentinel */ },
@@ -347,7 +342,6 @@ static struct i2c_driver an30259a_driver = {
                .of_match_table = an30259a_match_table,
        },
        .probe = an30259a_probe,
-       .remove = an30259a_remove,
        .id_table = an30259a_id,
 };
 
-- 
2.25.1