linux-t2-patches/4002-HID-apple-ensure-the-keyboard-backlight-is-off-if-su.patch at main · t2linux/linux-t2-patches · GitHub

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From 478b065d50e4d82c1c990a53d03a2dd1002eb0ad Mon Sep 17 00:00:00 2001
From: Aditya Garg <gargaditya08@live.com>
Date: Fri, 3 Apr 2026 15:14:47 +0000
Subject: [PATCH] HID: apple: ensure the keyboard backlight is off if
 suspending

Some users reported that upon suspending their keyboard backlight
remained on. Fix this by adding the missing LED_CORE_SUSPENDRESUME flag

Reported-by: André Eikmeyer <andre.eikmeyer@gmail.com>
Tested-by: André Eikmeyer <andre.eikmeyer@gmail.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
---
 drivers/hid/hid-apple.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index fc5897a6b..2eb45fac8 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -858,6 +858,7 @@ static int apple_backlight_init(struct hid_device *hdev)
 	asc->backlight->cdev.name = "apple::kbd_backlight";
 	asc->backlight->cdev.max_brightness = rep->backlight_on_max;
 	asc->backlight->cdev.brightness_set_blocking = apple_backlight_led_set;
+	asc->backlight->cdev.flags = LED_CORE_SUSPENDRESUME;

 	ret = apple_backlight_set(hdev, 0, 0);
 	if (ret < 0) {
@@ -926,6 +927,7 @@ static int apple_magic_backlight_init(struct hid_device *hdev)
 	backlight->cdev.name = ":white:" LED_FUNCTION_KBD_BACKLIGHT;
 	backlight->cdev.max_brightness = backlight->brightness->field[0]->logical_maximum;
 	backlight->cdev.brightness_set_blocking = apple_magic_backlight_led_set;
+	backlight->cdev.flags = LED_CORE_SUSPENDRESUME;

 	apple_magic_backlight_set(backlight, 0, 0);

--
2.52.0