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| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2015-10-07 09:10:41 (GMT) |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-01-04 08:57:30 (GMT) |
| commit | 81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 (patch) | |
| tree | ff084840f52a554f7a902c7e1ffe54416e4c452f /drivers/leds/trigger/ledtrig-backlight.c | |
| parent | 437a4240f26461610cc0d90950b1c88348d9babe (diff) | |
| download | linux-81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4.tar.xz | |
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-backlight.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-backlight.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c index 59eca17..1ca1f16 100644 --- a/drivers/leds/trigger/ledtrig-backlight.c +++ b/drivers/leds/trigger/ledtrig-backlight.c @@ -51,9 +51,9 @@ static int fb_notifier_callback(struct notifier_block *p, if ((n->old_status == UNBLANK) ^ n->invert) { n->brightness = led->brightness; - led_set_brightness_async(led, LED_OFF); + led_set_brightness_nosleep(led, LED_OFF); } else { - led_set_brightness_async(led, n->brightness); + led_set_brightness_nosleep(led, n->brightness); } n->old_status = new_status; @@ -89,9 +89,9 @@ static ssize_t bl_trig_invert_store(struct device *dev, /* After inverting, we need to update the LED. */ if ((n->old_status == BLANK) ^ n->invert) - led_set_brightness_async(led, LED_OFF); + led_set_brightness_nosleep(led, LED_OFF); else - led_set_brightness_async(led, n->brightness); + led_set_brightness_nosleep(led, n->brightness); return num; } |