6.6-stable review patch. If anyone has any objections, please let me know.
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From: Armin Wolf W_Armin@gmx.de
[ Upstream commit 444a9256f8d106e08a6bc2dc8ef28a8699e4b3ba ]
On the Acer Nitro AN515-58, the event 4 - 0 is send by the ACPI firmware when the backlight up/down keys are pressed. Ignore this event to avoid spamming the kernel log with error messages, as the acpi-video driver already handles brightness up/down events.
Reported-by: Bugaddr Bugaddr@protonmail.com Closes: https://bugaddr.tech/posts/2025-11-16-debugging-the-acer-nitro-5-an515-58-fn... Tested-by: Bugaddr Bugaddr@protonmail.com Signed-off-by: Armin Wolf W_Armin@gmx.de Link: https://patch.msgid.link/20251117155938.3030-1-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/acer-wmi.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 868faccfb8628..e7a43f824272f 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -86,6 +86,7 @@ MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
enum acer_wmi_event_ids { WMID_HOTKEY_EVENT = 0x1, + WMID_BACKLIGHT_EVENT = 0x4, WMID_ACCEL_OR_KBD_DOCK_EVENT = 0x5, WMID_GAMING_TURBO_KEY_EVENT = 0x7, WMID_AC_EVENT = 0x8, @@ -1992,6 +1993,9 @@ static void acer_wmi_notify(u32 value, void *context) sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true); } break; + case WMID_BACKLIGHT_EVENT: + /* Already handled by acpi-video */ + break; case WMID_ACCEL_OR_KBD_DOCK_EVENT: acer_gsensor_event(); acer_kbd_dock_event(&return_value);