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path: root/drivers/usb/core/ledtrig-usbport.c
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Diffstat (limited to 'drivers/usb/core/ledtrig-usbport.c')
-rw-r--r--drivers/usb/core/ledtrig-usbport.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/drivers/usb/core/ledtrig-usbport.c b/drivers/usb/core/ledtrig-usbport.c
index d775ffea20c3..dc7f7fd71684 100644
--- a/drivers/usb/core/ledtrig-usbport.c
+++ b/drivers/usb/core/ledtrig-usbport.c
@@ -113,11 +113,17 @@ static ssize_t usbport_trig_port_store(struct device *dev,
static struct attribute *ports_attrs[] = {
NULL,
};
+
static const struct attribute_group ports_group = {
.name = "ports",
.attrs = ports_attrs,
};
+static const struct attribute_group *ports_groups[] = {
+ &ports_group,
+ NULL
+};
+
/***************************************
* Adding & removing ports
***************************************/
@@ -298,61 +304,47 @@ static int usbport_trig_notify(struct notifier_block *nb, unsigned long action,
return NOTIFY_DONE;
}
-static void usbport_trig_activate(struct led_classdev *led_cdev)
+static int usbport_trig_activate(struct led_classdev *led_cdev)
{
struct usbport_trig_data *usbport_data;
- int err;
usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL);
if (!usbport_data)
- return;
+ return -ENOMEM;
usbport_data->led_cdev = led_cdev;
/* List of ports */
INIT_LIST_HEAD(&usbport_data->ports);
- err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group);
- if (err)
- goto err_free;
usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports);
usbport_trig_update_count(usbport_data);
/* Notifications */
- usbport_data->nb.notifier_call = usbport_trig_notify,
- led_cdev->trigger_data = usbport_data;
+ usbport_data->nb.notifier_call = usbport_trig_notify;
+ led_set_trigger_data(led_cdev, usbport_data);
usb_register_notify(&usbport_data->nb);
- led_cdev->activated = true;
- return;
-
-err_free:
- kfree(usbport_data);
+ return 0;
}
static void usbport_trig_deactivate(struct led_classdev *led_cdev)
{
- struct usbport_trig_data *usbport_data = led_cdev->trigger_data;
+ struct usbport_trig_data *usbport_data = led_get_trigger_data(led_cdev);
struct usbport_trig_port *port, *tmp;
- if (!led_cdev->activated)
- return;
-
list_for_each_entry_safe(port, tmp, &usbport_data->ports, list) {
usbport_trig_remove_port(usbport_data, port);
}
usb_unregister_notify(&usbport_data->nb);
- sysfs_remove_group(&led_cdev->dev->kobj, &ports_group);
-
kfree(usbport_data);
-
- led_cdev->activated = false;
}
static struct led_trigger usbport_led_trigger = {
.name = "usbport",
.activate = usbport_trig_activate,
.deactivate = usbport_trig_deactivate,
+ .groups = ports_groups,
};
static int __init usbport_trig_init(void)