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Commit 9fe7b080 authored by Mark Pearson's avatar Mark Pearson Committed by Greg Kroah-Hartman
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platform/x86: thinkpad_acpi: Ignore battery threshold change event notification 



[ Upstream commit 29e4e6b4235fefa5930affb531fe449cac330a72 ]

If user modifies the battery charge threshold an ACPI event is generated.
Confirmed with Lenovo FW team this is only generated on user event. As no
action is needed, ignore the event and prevent spurious kernel logs.

Reported-by: default avatarDerek Barbosa <debarbos@redhat.com>
Closes: https://lore.kernel.org/platform-driver-x86/7e9a1c47-5d9c-4978-af20-3949d53fb5dc@app.fastmail.com/T/#m5f5b9ae31d3fbf30d7d9a9d76c15fb3502dfd903


Signed-off-by: default avatarMark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Reviewed-by: default avatarArmin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20250517023348.2962591-1-mpearson-lenovo@squebb.ca


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 7614a710

drivers/platform/x86/thinkpad_acpi.c

+5 −0
Original line number Diff line number Diff line
@@ -195,6 +195,7 @@ enum tpacpi_hkey_event_t { 
	/* Thermal events */

	TP_HKEY_EV_ALARM_BAT_HOT	= 0x6011, /* battery too hot */

	TP_HKEY_EV_ALARM_BAT_XHOT	= 0x6012, /* battery critically hot */

	TP_HKEY_EV_ALARM_BAT_LIM_CHANGE	= 0x6013, /* battery charge limit changed*/

	TP_HKEY_EV_ALARM_SENSOR_HOT	= 0x6021, /* sensor too hot */

	TP_HKEY_EV_ALARM_SENSOR_XHOT	= 0x6022, /* sensor critically hot */

	TP_HKEY_EV_THM_TABLE_CHANGED	= 0x6030, /* windows; thermal table changed */
@@ -4059,6 +4060,10 @@ static bool hotkey_notify_6xxx(const u32 hkey, 
		pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");

		/* recommended action: immediate sleep/hibernate */

		break;

	case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE:

		pr_debug("Battery Info: battery charge threshold changed\n");

		/* User changed charging threshold. No action needed */

		return true;

	case TP_HKEY_EV_ALARM_SENSOR_HOT:

		pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");

		/* recommended action: warn user through gui, that */