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| author | Vincent Donnefort <vdonnefort@gmail.com> | 2014-06-14 13:21:40 +0400 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2014-07-03 23:02:14 +0400 |
| commit | 8b37e1bef5a6b60e949e28a4db3006e4b00bd758 (patch) | |
| tree | 3d9e31e6cb46cfa4bfc8f746b15dd737c0e068b2 /drivers/leds/led-class.c | |
| parent | 7e7743901b53dd71bb7332b16b14bcce15ebcd69 (diff) | |
| download | linux-8b37e1bef5a6b60e949e28a4db3006e4b00bd758.tar.xz | |
leds: convert blink timer to workqueue
This patch converts the blink timer from led-core to workqueue which is more
suitable for this kind of non-priority operations. Moreover, timer may lead to
errors when a LED setting function use a scheduling function such as pinctrl
which is using mutex.
Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds/led-class.c')
| -rw-r--r-- | drivers/leds/led-class.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index aa29198fca3e..129729d35478 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -15,10 +15,10 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/device.h> -#include <linux/timer.h> #include <linux/err.h> #include <linux/ctype.h> #include <linux/leds.h> +#include <linux/workqueue.h> #include "leds.h" static struct class *leds_class; @@ -97,9 +97,10 @@ static const struct attribute_group *led_groups[] = { NULL, }; -static void led_timer_function(unsigned long data) +static void led_work_function(struct work_struct *ws) { - struct led_classdev *led_cdev = (void *)data; + struct led_classdev *led_cdev = + container_of(ws, struct led_classdev, blink_work.work); unsigned long brightness; unsigned long delay; @@ -143,7 +144,8 @@ static void led_timer_function(unsigned long data) } } - mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay)); + queue_delayed_work(system_wq, &led_cdev->blink_work, + msecs_to_jiffies(delay)); } static void set_brightness_delayed(struct work_struct *ws) @@ -231,9 +233,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed); - init_timer(&led_cdev->blink_timer); - led_cdev->blink_timer.function = led_timer_function; - led_cdev->blink_timer.data = (unsigned long)led_cdev; + INIT_DELAYED_WORK(&led_cdev->blink_work, led_work_function); #ifdef CONFIG_LEDS_TRIGGERS led_trigger_set_default(led_cdev); |