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authorJacek Anaszewski <j.anaszewski@samsung.com>2015-10-07 11:10:41 +0200
committerJacek Anaszewski <j.anaszewski@samsung.com>2016-01-04 09:57:30 +0100
commit81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 (patch)
treeff084840f52a554f7a902c7e1ffe54416e4c452f /drivers/leds/trigger/ledtrig-heartbeat.c
parent437a4240f26461610cc0d90950b1c88348d9babe (diff)
downloadlinux-81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4.tar.bz2
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 <j.anaszewski@samsung.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Diffstat (limited to 'drivers/leds/trigger/ledtrig-heartbeat.c')
-rw-r--r--drivers/leds/trigger/ledtrig-heartbeat.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c
index 8622ce651ae2..410c39c62dc7 100644
--- a/drivers/leds/trigger/ledtrig-heartbeat.c
+++ b/drivers/leds/trigger/ledtrig-heartbeat.c
@@ -38,7 +38,7 @@ static void led_heartbeat_function(unsigned long data)
unsigned long delay = 0;
if (unlikely(panic_heartbeats)) {
- led_set_brightness(led_cdev, LED_OFF);
+ led_set_brightness_nosleep(led_cdev, LED_OFF);
return;
}
@@ -81,7 +81,7 @@ static void led_heartbeat_function(unsigned long data)
break;
}
- led_set_brightness_async(led_cdev, brightness);
+ led_set_brightness_nosleep(led_cdev, brightness);
mod_timer(&heartbeat_data->timer, jiffies + delay);
}