From: "jiale yao" <19888972804@163.com>
To: "Lee Jones" <lee@kernel.org>, "Pavel Machek" <pavel@kernel.org>,
linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re:[PATCH 2/2] leds: cr0014114: queue recount work on freezable workqueue
Date: Sat, 17 Oct 2026 15:18:00 +0800 (CST) [thread overview]
Message-ID: <547da4c9.1783.1a148b98683.Coremail.19888972804@163.com> (raw)
In-Reply-To: <20261016100435.2581303-3-yaojiale02@163.com>
At 2026-10-16 18:04:35, "Jiale Yao" <yaojiale02@163.com> wrote:
>The firmware workaround periodically recounts the LED state by issuing
>SPI transfers. Its delayed work runs on the non-freezable system
>workqueue and can therefore access the controller after it has been
>suspended.
>
>Queue the recount work on system_freezable_wq so hardware access is
>deferred until devices have resumed.
>
Fixes: 9e50d5fb0d18 ("leds: add LED driver for CR0014114 board")
>Signed-off-by: Jiale Yao <yaojiale02@163.com>
>---
> drivers/leds/leds-cr0014114.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/leds/leds-cr0014114.c b/drivers/leds/leds-cr0014114.c
>index 3f6931ae0bcc..afe3730e1222 100644
>--- a/drivers/leds/leds-cr0014114.c
>+++ b/drivers/leds/leds-cr0014114.c
>@@ -155,7 +155,8 @@ static void cr0014114_recount_work(struct work_struct *work)
> if (ret)
> dev_warn(priv->dev, "sync of LEDs failed %d\n", ret);
>
>- schedule_delayed_work(&priv->work, CR_RECOUNT_DELAY);
>+ queue_delayed_work(system_freezable_wq, &priv->work,
>+ CR_RECOUNT_DELAY);
> }
>
> static int cr0014114_set_sync(struct led_classdev *ldev,
>@@ -256,7 +257,8 @@ static int cr0014114_probe(struct spi_device *spi)
> return ret;
>
> /* setup recount work to workaround buggy firmware */
>- schedule_delayed_work(&priv->work, CR_RECOUNT_DELAY);
>+ queue_delayed_work(system_freezable_wq, &priv->work,
>+ CR_RECOUNT_DELAY);
>
> spi_set_drvdata(spi, priv);
>
>--
>2.34.1
prev parent reply other threads:[~2026-10-17 7:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 10:04 [PATCH 0/2] leds: freeze delayed hardware access during suspend Jiale Yao
2026-10-16 10:04 ` [PATCH 1/2] leds: tps6131x: queue torch refresh work on freezable workqueue Jiale Yao
2026-10-17 7:16 ` jiale yao
2026-10-16 10:04 ` [PATCH 2/2] leds: cr0014114: queue recount " Jiale Yao
2026-10-17 7:18 ` jiale yao [this message]
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