From: Lee Jones <lee@kernel.org>
To: Steve Dunnagan <sdunnaga@redhat.com>
Cc: Pavel Machek <pavel@kernel.org>,
Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Linus Walleij <linusw@kernel.org>,
linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] leds: gpio: Skip unavailable LEDs during shutdown
Date: Thu, 23 Jul 2026 12:35:32 +0100 [thread overview]
Message-ID: <20260723113532.GD3363113@google.com> (raw)
In-Reply-To: <20260710150841.19669-1-sdunnaga@redhat.com>
On Fri, 10 Jul 2026, Steve Dunnagan wrote:
> gpio_led_probe() leaves an error-valued GPIO descriptor in the LED
> data when an unavailable platform-data LED is skipped.
So why not nip that in the bud and fix that instead?
> The entry remains included in priv->num_leds, so gpio_led_shutdown()
> later passes the error pointer to gpio_led_set(), producing:
>
> gpiod_set_value: invalid GPIO (errorpointer: -ENOENT)
>
> Skip entries with error-valued GPIO descriptors during shutdown.
>
> Fixes: 45d4c6de4e49 ("leds: gpio: Try to lookup gpiod from device")
> Assisted-by: ChatGPT:GPT-5.5-Thinking
> Signed-off-by: Steve Dunnagan <sdunnaga@redhat.com>
> ---
> drivers/leds/leds-gpio.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
> index 8ae71c2e91e0..63cb517ef385 100644
> --- a/drivers/leds/leds-gpio.c
> +++ b/drivers/leds/leds-gpio.c
> @@ -304,6 +304,9 @@ static void gpio_led_shutdown(struct platform_device *pdev)
> for (i = 0; i < priv->num_leds; i++) {
> struct gpio_led_data *led = &priv->leds[i];
>
> + if (IS_ERR(led->gpiod))
> + continue;
> +
> if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN))
> gpio_led_set(&led->cdev, LED_OFF);
> }
> --
> 2.49.0
>
--
Lee Jones
next prev parent reply other threads:[~2026-07-23 11:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-10 15:08 [PATCH] leds: gpio: Skip unavailable LEDs during shutdown Steve Dunnagan
2026-07-10 15:21 ` sashiko-bot
2026-07-23 11:35 ` Lee Jones [this message]
2026-07-24 18:04 ` [PATCH v2] leds: gpio: Clear error pointers for skipped LEDs Steve Dunnagan
2026-07-24 18:16 ` sashiko-bot
2026-07-25 14:02 ` Linus Walleij
2026-08-06 13:52 ` (subset) " Lee Jones
2026-08-13 15:45 ` Steve Dunnagan
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