From 81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Wed, 7 Oct 2015 11:10:41 +0200 Subject: leds: core: Add led_set_brightness_nosleep{nopm} functions This patch adds led_set_brightness_nosleep() and led_set_brightness_nopm() functions, that guarantee setting LED brightness in a non-blocking way. The latter is used from pm_ops context and doesn't modify the brightness cached in the struct led_classdev. Its execution always ends up with a call to brightness setting op - either directly or through a set_brightness_work, regardless of LED_SUSPENDED flag state. The patch also replaces led_set_brightness_async() with led_set_brightness_nosleep() in all places where the most vital was setting brightness in a non sleeping way but not necessarily asynchronously, which is not needed for non-blocking drivers. Signed-off-by: Jacek Anaszewski Acked-by: Sakari Ailus --- drivers/leds/leds.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/leds/leds.h') diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h index cf6d44886bcb..8e252a2f8662 100644 --- a/drivers/leds/leds.h +++ b/drivers/leds/leds.h @@ -46,6 +46,10 @@ static inline int led_get_brightness(struct led_classdev *led_cdev) void led_init_core(struct led_classdev *led_cdev); void led_stop_software_blink(struct led_classdev *led_cdev); +void led_set_brightness_nopm(struct led_classdev *led_cdev, + enum led_brightness value); +void led_set_brightness_nosleep(struct led_classdev *led_cdev, + enum led_brightness value); extern struct rw_semaphore leds_list_lock; extern struct list_head leds_list; -- cgit v1.2.3