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LEDs Fixes

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- Fix race condition leading to null pointer dereference on ThinkPad
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Merge tag 'leds-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

Pull LED fix from Lee Jones:

 - Fix race condition leading to null pointer dereference on ThinkPad

* tag 'leds-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds:
  leds: led-class: Only Add LED to leds_list when it is fully ready
This commit is contained in:
Linus Torvalds 2026-01-22 09:24:00 -08:00
commit 0309fc3cc0
1 changed files with 5 additions and 5 deletions
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10
drivers/leds/led-class.c
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@ -560,11 +560,6 @@ int led_classdev_register_ext(struct device *parent,
#ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED
led_cdev->brightness_hw_changed = -1;
#endif
/* add to the list of leds */
down_write(&leds_list_lock);
list_add_tail(&led_cdev->node, &leds_list);
up_write(&leds_list_lock);
if (!led_cdev->max_brightness)
led_cdev->max_brightness = LED_FULL;
@ -574,6 +569,11 @@ int led_classdev_register_ext(struct device *parent,
led_init_core(led_cdev);
/* add to the list of leds */
down_write(&leds_list_lock);
list_add_tail(&led_cdev->node, &leds_list);
up_write(&leds_list_lock);
#ifdef CONFIG_LEDS_TRIGGERS
led_trigger_set_default(led_cdev);
#endif