From: Mingcong Bai <jeffbai@xxxxxxx> commit d0d10eaedcb53740883d7e5d53c5e15c879b48fb upstream. Based on the dmesg messages from the original reporter: [ 4.964073] ACPI: \_SB_.PCI0.LPCB.EC__.HKEY: BCTG evaluated but flagged as error [ 4.964083] thinkpad_acpi: Error probing battery 2 Lenovo ThinkPad X131e also needs this battery quirk. Reported-by: Fan Yang <804284660@xxxxxx> Tested-by: Fan Yang <804284660@xxxxxx> Co-developed-by: Xi Ruoyao <xry111@xxxxxxxxxxx> Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxx> Signed-off-by: Mingcong Bai <jeffbai@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20250221164825.77315-1-jeffbai@xxxxxxx Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/platform/x86/thinkpad_acpi.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -9699,6 +9699,7 @@ static const struct tpacpi_quirk battery * Individual addressing is broken on models that expose the * primary battery as BAT1. */ + TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ TPACPI_Q_LNV('J', '7', true), /* B5400 */ TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ Patches currently in stable-queue which might be from jeffbai@xxxxxxx are queue-5.4/platform-x86-thinkpad_acpi-add-battery-quirk-for-thinkpad-x131e.patch
