6.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: George Stark <gnstark@xxxxxxxxxxxxxxxxx> [ Upstream commit efc347b9efee1c2b081f5281d33be4559fa50a16 ] 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> Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> Link: https://lore.kernel.org/r/20240411161032.609544-8-gnstark@xxxxxxxxxxxxxxxxx Signed-off-by: Lee Jones <lee@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/leds/leds-mlxreg.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/leds/leds-mlxreg.c b/drivers/leds/leds-mlxreg.c index 5595788d98d20..1b70de72376cc 100644 --- a/drivers/leds/leds-mlxreg.c +++ b/drivers/leds/leds-mlxreg.c @@ -256,6 +256,7 @@ static int mlxreg_led_probe(struct platform_device *pdev) { struct mlxreg_core_platform_data *led_pdata; struct mlxreg_led_priv_data *priv; + int err; led_pdata = dev_get_platdata(&pdev->dev); if (!led_pdata) { @@ -267,26 +268,21 @@ static int mlxreg_led_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - mutex_init(&priv->access_lock); + err = devm_mutex_init(&pdev->dev, &priv->access_lock); + if (err) + return err; + priv->pdev = pdev; priv->pdata = led_pdata; return mlxreg_led_config(priv); } -static void mlxreg_led_remove(struct platform_device *pdev) -{ - struct mlxreg_led_priv_data *priv = dev_get_drvdata(&pdev->dev); - - mutex_destroy(&priv->access_lock); -} - static struct platform_driver mlxreg_led_driver = { .driver = { .name = "leds-mlxreg", }, .probe = mlxreg_led_probe, - .remove_new = mlxreg_led_remove, }; module_platform_driver(mlxreg_led_driver); -- 2.43.0
