Re: [PATCH 2/2] led: triggers: Add LED_INIT_DEFAULT_TRIGGER flag

From: Pavel Machek
Date: Sun Dec 09 2018 - 14:00:42 EST


> Set the flag in the led_trigger_set_default(). It is expected to be
> cleared in the activate() op of a trigger after trigger fwnode
> initialization data is parsed and applied. This should happen only
> once after LED class device registration, to allow leaving triggers
> in the idle state on re-apply and let the users apply their own
> settings without being interfered with the default ones.

This is not exactly english :-(. "without interference from"?

I guess we could wait with this till we have an in-tree user?

Thanks,
Pavel

> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
> ---
> drivers/leds/led-triggers.c | 2 ++
> include/linux/leds.h | 1 +
> 2 files changed, 3 insertions(+)
>
> diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
> index 52b12e601ebe..9421222ca7a0 100644
> --- a/drivers/leds/led-triggers.c
> +++ b/drivers/leds/led-triggers.c
> @@ -201,10 +201,12 @@ void led_trigger_set_default(struct led_classdev *led_cdev)
> down_write(&led_cdev->trigger_lock);
> list_for_each_entry(trig, &trigger_list, next_trig) {
> if (!strcmp(led_cdev->default_trigger, trig->name)) {
> + led_cdev->flags |= LED_INIT_DEFAULT_TRIGGER;
> led_trigger_set(led_cdev, trig);
> break;
> }
> }
> +
> up_write(&led_cdev->trigger_lock);
> up_read(&triggers_list_lock);
> }
> diff --git a/include/linux/leds.h b/include/linux/leds.h
> index 7393a316d9fa..6f05a5816371 100644
> --- a/include/linux/leds.h
> +++ b/include/linux/leds.h
> @@ -51,6 +51,7 @@ struct led_classdev {
> #define LED_PANIC_INDICATOR BIT(20)
> #define LED_BRIGHT_HW_CHANGED BIT(21)
> #define LED_RETAIN_AT_SHUTDOWN BIT(22)
> +#define LED_INIT_DEFAULT_TRIGGER BIT(23)
>
> /* set_brightness_work / blink_timer flags, atomic, private. */
> unsigned long work_flags;

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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