linux-kernel - [PATCH 6/8] leds: aw2013: explicitly unregister LEDs at module's shutdown

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Date:   Wed, 25 Oct 2023 16:07:35 +0300
From:   George Stark <gnstark@...utedevices.com>
To:     <pavel@....cz>, <lee@...nel.org>, <vadimp@...dia.com>,
        <mpe@...erman.id.au>, <npiggin@...il.com>,
        <christophe.leroy@...roup.eu>, <gnstark@...utedevices.com>
CC:     <linux-leds@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <kernel@...rdevices.ru>
Subject: [PATCH 6/8] leds: aw2013: explicitly unregister LEDs at module's shutdown

LEDs are registered using devm_led_classdev_register() and automatically
unregistered after module's remove(). led_classdev_unregister() calls
led_set_brightness() to turn off the LEDs and module's appropriate callback
uses resources those were destroyed already in module's remove().
So explicitly unregister LEDs at module shutdown.

Signed-off-by: George Stark <gnstark@...utedevices.com>
---
 drivers/leds/leds-aw2013.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c
index 59765640b70f..bd233500aa2d 100644
--- a/drivers/leds/leds-aw2013.c
+++ b/drivers/leds/leds-aw2013.c
@@ -404,6 +404,10 @@ static int aw2013_probe(struct i2c_client *client)
 static void aw2013_remove(struct i2c_client *client)
 {
 	struct aw2013 *chip = i2c_get_clientdata(client);
+	int i;
+
+	for (i = 0; i < chip->num_leds; i++)
+		devm_led_classdev_unregister(&client->dev, &chip->leds[i].cdev);
 
 	aw2013_chip_disable(chip);
 
-- 
2.38.4