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| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2015-10-19 09:04:01 +0200 |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-01-04 09:57:30 +0100 |
| commit | 1afcadfcd184c3b52e38bae15c247a5fa4a0e054 (patch) | |
| tree | 6e94c39adb855e8309f97a7d79fbad19bcffda96 /drivers/leds/led-core.c | |
| parent | leds: core: Add led_set_brightness_nosleep{nopm} functions (diff) | |
| download | linux-1afcadfcd184c3b52e38bae15c247a5fa4a0e054.tar.xz linux-1afcadfcd184c3b52e38bae15c247a5fa4a0e054.zip | |
leds: core: Use set_brightness_work for the blocking op
This patch makes LED core capable of setting brightness for drivers
that implement brightness_set_blocking op. It removes from LED class
drivers responsibility for using work queues on their own.
In order to achieve this set_brightness_delayed callback is being
modified to directly call one of available ops for brightness setting.
led_set_brightness_async() function didn't set brightness in an
asynchronous way in all cases. It was mistakenly assuming that all
LED subsystem drivers used work queue in their brightness_set op,
whereas only half of them did that. Since it has no users now,
it is being removed.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Diffstat (limited to 'drivers/leds/led-core.c')
| -rw-r--r-- | drivers/leds/led-core.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c index 3d168592db65..f57a96cb7b7d 100644 --- a/drivers/leds/led-core.c +++ b/drivers/leds/led-core.c @@ -83,6 +83,7 @@ static void set_brightness_delayed(struct work_struct *ws) { struct led_classdev *led_cdev = container_of(ws, struct led_classdev, set_brightness_work); + int ret = 0; if (led_cdev->flags & LED_BLINK_DISABLE) { led_cdev->delayed_set_value = LED_OFF; @@ -90,7 +91,16 @@ static void set_brightness_delayed(struct work_struct *ws) led_cdev->flags &= ~LED_BLINK_DISABLE; } - led_set_brightness_async(led_cdev, led_cdev->delayed_set_value); + if (led_cdev->brightness_set) + led_cdev->brightness_set(led_cdev, led_cdev->delayed_set_value); + else if (led_cdev->brightness_set_blocking) + ret = led_cdev->brightness_set_blocking(led_cdev, + led_cdev->delayed_set_value); + else + ret = -ENOTSUPP; + if (ret < 0) + dev_err(led_cdev->dev, + "Setting an LED's brightness failed (%d)\n", ret); } static void led_set_software_blink(struct led_classdev *led_cdev, |