leds: pca9532: Remove work queue for LEDs.

Now the core implements the work queue, remove it from the driver,
and switch to using brightness_set_blocking op.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

1 files changed, 12 insertions, 16 deletions

diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index 5a6363d161a2..17c63ec9fb9e 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -158,7 +158,7 @@ static void pca9532_setled(struct pca9532_led *led)
         mutex_unlock(&data->update_lock);
 }
 
-static void pca9532_set_brightness(struct led_classdev *led_cdev,
+static int pca9532_set_brightness(struct led_classdev *led_cdev,
         enum led_brightness value)
 {
         int err = 0;
@@ -172,9 +172,12 @@ static void pca9532_set_brightness(struct led_classdev *led_cdev,
                 led->state = PCA9532_PWM0; /* Thecus: hardcode one pwm */
                 err = pca9532_calcpwm(led->client, 0, 0, value);
                 if (err)
-                        return; /* XXX: led api doesn't allow error code? */
+                        return err;
         }
-        schedule_work(&led->work);
+        if (led->state == PCA9532_PWM0)
+                pca9532_setpwm(led->client, 0);
+        pca9532_setled(led);
+        return err;
 }
 
 static int pca9532_set_blink(struct led_classdev *led_cdev,
@@ -198,7 +201,10 @@ static int pca9532_set_blink(struct led_classdev *led_cdev,
         err = pca9532_calcpwm(client, 0, psc, led_cdev->brightness);
         if (err)
                 return err;
-        schedule_work(&led->work);
+        if (led->state == PCA9532_PWM0)
+                pca9532_setpwm(led->client, 0);
+        pca9532_setled(led);
+
         return 0;
 }
 
@@ -233,15 +239,6 @@ static void pca9532_input_work(struct work_struct *work)
         mutex_unlock(&data->update_lock);
 }
 
-static void pca9532_led_work(struct work_struct *work)
-{
-        struct pca9532_led *led;
-        led = container_of(work, struct pca9532_led, work);
-        if (led->state == PCA9532_PWM0)
-                pca9532_setpwm(led->client, 0);
-        pca9532_setled(led);
-}
-
 #ifdef CONFIG_LEDS_PCA9532_GPIO
 static int pca9532_gpio_request_pin(struct gpio_chip *gc, unsigned offset)
 {
@@ -307,7 +304,6 @@ static int pca9532_destroy_devices(struct pca9532_data *data, int n_devs)
                         break;
                 case PCA9532_TYPE_LED:
                         led_classdev_unregister(&data->leds[i].ldev);
-                        cancel_work_sync(&data->leds[i].work);
                         break;
                 case PCA9532_TYPE_N2100_BEEP:
                         if (data->idev != NULL) {
@@ -359,9 +355,9 @@ static int pca9532_configure(struct i2c_client *client,
                         led->name = pled->name;
                         led->ldev.name = led->name;
                         led->ldev.brightness = LED_OFF;
-                        led->ldev.brightness_set = pca9532_set_brightness;
+                        led->ldev.brightness_set_blocking =
+                                                pca9532_set_brightness;
                         led->ldev.blink_set = pca9532_set_blink;
-                        INIT_WORK(&led->work, pca9532_led_work);
                         err = led_classdev_register(&client->dev, &led->ldev);
                         if (err < 0) {
                                 dev_err(&client->dev,