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 <gnstark@xxxxxxxxxxxxxxxxx> --- drivers/leds/leds-an30259a.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/leds/leds-an30259a.c b/drivers/leds/leds-an30259a.c index 24b1041213c2..8f62c012c81a 100644 --- a/drivers/leds/leds-an30259a.c +++ b/drivers/leds/leds-an30259a.c @@ -7,6 +7,7 @@ // Datasheet: // https://www.alliedelec.com/m/d/a9d2b3ee87c2d1a535a41dd747b1c247.pdf +#include <linux/devm-helpers.h> #include <linux/i2c.h> #include <linux/leds.h> #include <linux/module.h> @@ -283,7 +284,10 @@ 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 +321,9 @@ 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 +343,6 @@ static struct i2c_driver an30259a_driver = { .of_match_table = of_match_ptr(an30259a_match_table), }, .probe = an30259a_probe, - .remove = an30259a_remove, .id_table = an30259a_id, }; -- 2.25.1
