This is a note to let you know that I've just added the patch titled platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: platform-x86-acer-wmi-add-automatic-keyboard-backgro.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4a38bd98aaae41acddb82e51e2ddf5eee6d2f52a Author: Timo Witte <timo.witte@xxxxxxxxx> Date: Tue Aug 4 02:14:23 2020 +0200 platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE [ Upstream commit 9e7a005ad56aa7d6ea5830c5ffcc60bf35de380b ] Got a dmesg message on my AMD Renoir based Acer laptop: "acer_wmi: Unknown key number - 0x84" when toggling keyboard background light Signed-off-by: Timo Witte <timo.witte@xxxxxxxxx> Reviewed-by: "Lee, Chun-Yi" <jlee@xxxxxxxx> Link: https://lore.kernel.org/r/20200804001423.36778-1-timo.witte@xxxxxxxxx Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 5c169a837ebdf..b336f2620f9dc 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -124,6 +124,7 @@ static const struct key_entry acer_wmi_keymap[] __initconst = { {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ {KE_IGNORE, 0x81, {KEY_SLEEP} }, {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */ + {KE_IGNORE, 0x84, {KEY_KBDILLUMTOGGLE} }, /* Automatic Keyboard background light toggle */ {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} }, {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} }, {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },