platform/x86: acer-wmi: Ignore AC events

BugLink: https://bugs.launchpad.net/bugs/2114239

[ Upstream commit f6bfa25c6665f8721421ea94fe506cc22f1d4b43 ]

On the Acer Swift SFG14-41, the events 8 - 1 and 8 - 0 are printed on
AC connect/disconnect. Ignore those events to avoid spamming the
kernel log with error messages.

Reported-by: Farhan Anwar <farhan.anwar8@gmail.com>
Closes: https://lore.kernel.org/platform-driver-x86/2ffb529d-e7c8-4026-a3b8-120c8e7afec8@gmail.com
Tested-by: Rayan Margham <rayanmargham4@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20250119201723.11102-2-W_Armin@gmx.de
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>

drivers/platform/x86/acer-wmi.c

@@ -96,6 +96,7 @@ enum acer_wmi_event_ids {
 	WMID_HOTKEY_EVENT = 0x1,
 	WMID_ACCEL_OR_KBD_DOCK_EVENT = 0x5,
 	WMID_GAMING_TURBO_KEY_EVENT = 0x7,
+	WMID_AC_EVENT = 0x8,
 };
 
 enum acer_wmi_predator_v4_sys_info_command {
@@ -2341,6 +2342,9 @@ static void acer_wmi_notify(u32 value, void *context)
 		if (return_value.key_num == 0x5 && has_cap(ACER_CAP_PLATFORM_PROFILE))
 			acer_thermal_profile_change();
 		break;
+	case WMID_AC_EVENT:
+		/* We ignore AC events here */
+		break;
 	default:
 		pr_warn("Unknown function number - %d - %d\n",
 			return_value.function, return_value.key_num);