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| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2015-10-07 11:10:41 +0200 |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-01-04 09:57:30 +0100 |
| commit | 81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 (patch) | |
| tree | ff084840f52a554f7a902c7e1ffe54416e4c452f /drivers/leds/trigger/ledtrig-transient.c | |
| parent | 437a4240f26461610cc0d90950b1c88348d9babe (diff) | |
| download | linux-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-transient.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-transient.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/leds/trigger/ledtrig-transient.c b/drivers/leds/trigger/ledtrig-transient.c index 3c34de404d18..1dddd8f63e2a 100644 --- a/drivers/leds/trigger/ledtrig-transient.c +++ b/drivers/leds/trigger/ledtrig-transient.c @@ -41,7 +41,7 @@ static void transient_timer_function(unsigned long data) struct transient_trig_data *transient_data = led_cdev->trigger_data; transient_data->activate = 0; - led_set_brightness_async(led_cdev, transient_data->restore_state); + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); } static ssize_t transient_activate_show(struct device *dev, @@ -72,7 +72,7 @@ static ssize_t transient_activate_store(struct device *dev, if (state == 0 && transient_data->activate == 1) { del_timer(&transient_data->timer); transient_data->activate = state; - led_set_brightness_async(led_cdev, + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); return size; } @@ -81,7 +81,7 @@ static ssize_t transient_activate_store(struct device *dev, if (state == 1 && transient_data->activate == 0 && transient_data->duration != 0) { transient_data->activate = state; - led_set_brightness_async(led_cdev, transient_data->state); + led_set_brightness_nosleep(led_cdev, transient_data->state); transient_data->restore_state = (transient_data->state == LED_FULL) ? LED_OFF : LED_FULL; mod_timer(&transient_data->timer, @@ -204,7 +204,7 @@ static void transient_trig_deactivate(struct led_classdev *led_cdev) if (led_cdev->activated) { del_timer_sync(&transient_data->timer); - led_set_brightness_async(led_cdev, + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); device_remove_file(led_cdev->dev, &dev_attr_activate); device_remove_file(led_cdev->dev, &dev_attr_duration); |