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leds: add led-class attribute-group support 

Allow led-class devices to be created with optional attribute groups.

This is needed in order to allow led drivers to create custom device
attributes in a race-free manner.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Johan Hovold 2014-06-25 10:08:44 -07:00 committed by Bryan Wu
parent a497c3ba1d
commit d0d480cce8
2 changed files with 5 additions and 2 deletions
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5
drivers/leds/led-class.c
View File

@ -210,8 +210,9 @@ static const struct dev_pm_ops leds_class_dev_pm_ops = {
*/
int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
{
led_cdev->dev = device_create(leds_class, parent, 0, led_cdev,
"%s", led_cdev->name);
led_cdev->dev = device_create_with_groups(leds_class, parent, 0,
led_cdev, led_cdev->groups,
"%s", led_cdev->name);
if (IS_ERR(led_cdev->dev))
return PTR_ERR(led_cdev->dev);

2
include/linux/leds.h
View File

@ -63,6 +63,8 @@ struct led_classdev {
unsigned long *delay_off);
struct device *dev;
const struct attribute_group **groups;
struct list_head node; /* LED Device list */
const char *default_trigger; /* Trigger to use */