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[PATCH] drivers/led: handle sysfs errors 

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Garzik 2006-10-17 00:10:20 -07:00 committed by Linus Torvalds
parent 58ff407bee
commit 12fda16814
2 changed files with 35 additions and 7 deletions
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24
drivers/leds/led-class.c
View File

@ -91,6 +91,8 @@ EXPORT_SYMBOL_GPL(led_classdev_resume);
*/ */
int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
{ {
int rc;
led_cdev->class_dev = class_device_create(leds_class, NULL, 0, led_cdev->class_dev = class_device_create(leds_class, NULL, 0,
parent, "%s", led_cdev->name); parent, "%s", led_cdev->name);
if (unlikely(IS_ERR(led_cdev->class_dev))) if (unlikely(IS_ERR(led_cdev->class_dev)))
@ -99,8 +101,10 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
class_set_devdata(led_cdev->class_dev, led_cdev); class_set_devdata(led_cdev->class_dev, led_cdev);
/* register the attributes */ /* register the attributes */
class_device_create_file(led_cdev->class_dev, rc = class_device_create_file(led_cdev->class_dev,
&class_device_attr_brightness); &class_device_attr_brightness);
if (rc)
goto err_out;
/* add to the list of leds */ /* add to the list of leds */
write_lock(&leds_list_lock); write_lock(&leds_list_lock);
@ -110,16 +114,28 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
#ifdef CONFIG_LEDS_TRIGGERS #ifdef CONFIG_LEDS_TRIGGERS
rwlock_init(&led_cdev->trigger_lock); rwlock_init(&led_cdev->trigger_lock);
led_trigger_set_default(led_cdev); rc = class_device_create_file(led_cdev->class_dev,
class_device_create_file(led_cdev->class_dev,
&class_device_attr_trigger); &class_device_attr_trigger);
if (rc)
goto err_out_led_list;
led_trigger_set_default(led_cdev);
#endif #endif
printk(KERN_INFO "Registered led device: %s\n", printk(KERN_INFO "Registered led device: %s\n",
led_cdev->class_dev->class_id); led_cdev->class_dev->class_id);
return 0; return 0;
#ifdef CONFIG_LEDS_TRIGGERS
err_out_led_list:
class_device_remove_file(led_cdev->class_dev,
&class_device_attr_brightness);
list_del(&led_cdev->node);
#endif
err_out:
class_device_unregister(led_cdev->class_dev);
return rc;
} }
EXPORT_SYMBOL_GPL(led_classdev_register); EXPORT_SYMBOL_GPL(led_classdev_register);

16
drivers/leds/ledtrig-timer.c
View File

@ -123,6 +123,7 @@ static CLASS_DEVICE_ATTR(delay_off, 0644, led_delay_off_show,
static void timer_trig_activate(struct led_classdev *led_cdev) static void timer_trig_activate(struct led_classdev *led_cdev)
{ {
struct timer_trig_data *timer_data; struct timer_trig_data *timer_data;
int rc;
timer_data = kzalloc(sizeof(struct timer_trig_data), GFP_KERNEL); timer_data = kzalloc(sizeof(struct timer_trig_data), GFP_KERNEL);
if (!timer_data) if (!timer_data)
@ -134,10 +135,21 @@ static void timer_trig_activate(struct led_classdev *led_cdev)
timer_data->timer.function = led_timer_function; timer_data->timer.function = led_timer_function;
timer_data->timer.data = (unsigned long) led_cdev; timer_data->timer.data = (unsigned long) led_cdev;
class_device_create_file(led_cdev->class_dev, rc = class_device_create_file(led_cdev->class_dev,
&class_device_attr_delay_on); &class_device_attr_delay_on);
class_device_create_file(led_cdev->class_dev, if (rc) goto err_out;
rc = class_device_create_file(led_cdev->class_dev,
&class_device_attr_delay_off); &class_device_attr_delay_off);
if (rc) goto err_out_delayon;
return;
err_out_delayon:
class_device_remove_file(led_cdev->class_dev,
&class_device_attr_delay_on);
err_out:
led_cdev->trigger_data = NULL;
kfree(timer_data);
} }
static void timer_trig_deactivate(struct led_classdev *led_cdev) static void timer_trig_deactivate(struct led_classdev *led_cdev)