From 9aa0762579df4f8f6259b7cd23a8540d00a970bf Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Thu, 20 Aug 2015 15:52:51 +0200 Subject: [PATCH] leds: pwm: remove work queue Now the core implements the work queue, remove it from the drivers, and switch to using brightness_set_blocking op. Signed-off-by: Jacek Anaszewski Cc: Raphael Assenat --- drivers/leds/leds-pwm.c | 34 +++++++++++++--------------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c index 1d07e3e83d29..bc501930b54b 100644 --- a/drivers/leds/leds-pwm.c +++ b/drivers/leds/leds-pwm.c @@ -22,12 +22,10 @@ #include #include #include -#include struct led_pwm_data { struct led_classdev cdev; struct pwm_device *pwm; - struct work_struct work; unsigned int active_low; unsigned int period; int duty; @@ -51,14 +49,6 @@ static void __led_pwm_set(struct led_pwm_data *led_dat) pwm_enable(led_dat->pwm); } -static void led_pwm_work(struct work_struct *work) -{ - struct led_pwm_data *led_dat = - container_of(work, struct led_pwm_data, work); - - __led_pwm_set(led_dat); -} - static void led_pwm_set(struct led_classdev *led_cdev, enum led_brightness brightness) { @@ -75,10 +65,14 @@ static void led_pwm_set(struct led_classdev *led_cdev, led_dat->duty = duty; - if (led_dat->can_sleep) - schedule_work(&led_dat->work); - else - __led_pwm_set(led_dat); + __led_pwm_set(led_dat); +} + +static int led_pwm_set_blocking(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + led_pwm_set(led_cdev, brightness); + return 0; } static inline size_t sizeof_pwm_leds_priv(int num_leds) @@ -89,11 +83,8 @@ static inline size_t sizeof_pwm_leds_priv(int num_leds) static void led_pwm_cleanup(struct led_pwm_priv *priv) { - while (priv->num_leds--) { + while (priv->num_leds--) led_classdev_unregister(&priv->leds[priv->num_leds].cdev); - if (priv->leds[priv->num_leds].can_sleep) - cancel_work_sync(&priv->leds[priv->num_leds].work); - } } static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, @@ -105,7 +96,6 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, led_data->active_low = led->active_low; led_data->cdev.name = led->name; led_data->cdev.default_trigger = led->default_trigger; - led_data->cdev.brightness_set = led_pwm_set; led_data->cdev.brightness = LED_OFF; led_data->cdev.max_brightness = led->max_brightness; led_data->cdev.flags = LED_CORE_SUSPENDRESUME; @@ -122,8 +112,10 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, } led_data->can_sleep = pwm_can_sleep(led_data->pwm); - if (led_data->can_sleep) - INIT_WORK(&led_data->work, led_pwm_work); + if (!led_data->can_sleep) + led_data->cdev.brightness_set = led_pwm_set; + else + led_data->cdev.brightness_set_blocking = led_pwm_set_blocking; led_data->period = pwm_get_period(led_data->pwm); if (!led_data->period && (led->pwm_period_ns > 0)) -- 2.39.2