On Fri, 07 Mar 2025, Craig McQueen wrote:
> If the text "default" is written to the LED's sysfs 'trigger' attr, then
> call led_trigger_set_default() to set the LED to its default trigger.
More info please.
Please explain why this is useful.
Under what circumstances would the default trigger not be set?
> ---
> drivers/leds/led-triggers.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
> index b2d40f87a5ff..f2bc3bb5062d 100644
> --- a/drivers/leds/led-triggers.c
> +++ b/drivers/leds/led-triggers.c
> @@ -54,6 +54,11 @@ ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
> goto unlock;
> }
>
> + if (sysfs_streq(buf, "default")) {
> + led_trigger_set_default(led_cdev);
> + goto unlock;
> + }
> +
> down_read(&triggers_list_lock);
> list_for_each_entry(trig, &trigger_list, next_trig) {
> if (sysfs_streq(buf, trig->name) && trigger_relevant(led_cdev, trig)) {
> --
> 2.48.1
>
>
--
Lee Jones [李琼斯]
