linux-kernel - [PATCH 2/8] leds: nic78bx: explicitly unregister LEDs at module's shutdown

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Message-ID: <20231025130737.2015468-3-gnstark@salutedevices.com>
Date:   Wed, 25 Oct 2023 16:07:31 +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 2/8] leds: nic78bx: 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-nic78bx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/leds/leds-nic78bx.c b/drivers/leds/leds-nic78bx.c
index f196f52eec1e..12b70fcad37f 100644
--- a/drivers/leds/leds-nic78bx.c
+++ b/drivers/leds/leds-nic78bx.c
@@ -170,6 +170,10 @@ static int nic78bx_probe(struct platform_device *pdev)
 static int nic78bx_remove(struct platform_device *pdev)
 {
 	struct nic78bx_led_data *led_data = platform_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(nic78bx_leds); i++)
+		devm_led_classdev_unregister(&pdev->dev, &nic78bx_leds[i].cdev);
 
 	/* Lock LED register */
 	outb(NIC78BX_LOCK_VALUE,
-- 
2.38.4