diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/leds/leds-neo1973-vibrator.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/leds/leds-neo1973-vibrator.c b/drivers/leds/leds-neo1973-vibrator.c index 1c4db5dfbc6..494fb83af4e 100644 --- a/drivers/leds/leds-neo1973-vibrator.c +++ b/drivers/leds/leds-neo1973-vibrator.c @@ -33,7 +33,7 @@ struct neo1973_vib_priv { struct led_classdev cdev; unsigned int gpio; - struct mutex mutex; + spinlock_t lock; unsigned int has_pwm; struct s3c2410_pwm pwm; }; @@ -41,6 +41,7 @@ struct neo1973_vib_priv { static void neo1973_vib_vib_set(struct led_classdev *led_cdev, enum led_brightness value) { + unsigned long flags; struct neo1973_vib_priv *vp = container_of(led_cdev, struct neo1973_vib_priv, cdev); @@ -56,7 +57,7 @@ static void neo1973_vib_vib_set(struct led_classdev *led_cdev, * value == 128 -> 50% duty cycle (medium power) * value == 0 -> 0% duty cycle (zero power) */ - mutex_lock(&vp->mutex); + spin_lock_irqsave(&vp->lock, flags); if (vp->has_pwm) s3c2410_pwm_duty_cycle(value / 4, &vp->pwm); else { @@ -65,8 +66,7 @@ static void neo1973_vib_vib_set(struct led_classdev *led_cdev, else neo1973_gpb_setpin(vp->gpio, 0); } - - mutex_unlock(&vp->mutex); + spin_unlock_irqrestore(&vp->lock, flags); } static struct neo1973_vib_priv neo1973_vib_led = { @@ -159,7 +159,7 @@ static int __init neo1973_vib_probe(struct platform_device *pdev) #ifdef CONFIG_MACH_NEO1973_GTA02 configured: #endif - mutex_init(&neo1973_vib_led.mutex); + spin_lock_init(&neo1973_vib_led.lock); return led_classdev_register(&pdev->dev, &neo1973_vib_led.cdev); } @@ -177,8 +177,6 @@ static int neo1973_vib_remove(struct platform_device *pdev) led_classdev_unregister(&neo1973_vib_led.cdev); - mutex_destroy(&neo1973_vib_led.mutex); - return 0; } |