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leds: trigger: netdev: init mode if hw control already active

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On netdev trigger activation, hw control may be already active by
default. If this is the case and a device is actually provided by
hw_control_get_device(), init the already active mode and set the
bool to hw_control bool to true to reflect the already set mode in the
trigger_data.

Co-developed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christian Marangi 2023-05-29 18:32:40 +02:00 • committed by David S. Miller
parent 33ec0b53be
commit 0316cc5629
1 changed files with 17 additions and 0 deletions
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17
drivers/leds/trigger/ledtrig-netdev.c
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@ -454,6 +454,8 @@ static void netdev_trig_work(struct work_struct *work)
static int netdev_trig_activate(struct led_classdev *led_cdev)
{
struct led_netdev_data *trigger_data;
unsigned long mode;
struct device *dev;
int rc;
trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL);
@ -475,6 +477,21 @@ static int netdev_trig_activate(struct led_classdev *led_cdev)
atomic_set(&trigger_data->interval, msecs_to_jiffies(NETDEV_LED_DEFAULT_INTERVAL));
trigger_data->last_activity = 0;
/* Check if hw control is active by default on the LED.
* Init already enabled mode in hw control.
*/
if (supports_hw_control(led_cdev) &&
!led_cdev->hw_control_get(led_cdev, &mode)) {
dev = led_cdev->hw_control_get_device(led_cdev);
if (dev) {
const char *name = dev_name(dev);
set_device_name(trigger_data, name, strlen(name));
trigger_data->hw_control = true;
trigger_data->mode = mode;
}
}
led_set_trigger_data(led_cdev, trigger_data);
rc = register_netdevice_notifier(&trigger_data->notifier);