diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ef6762a7cdf7..1fd6a4a34c15 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -95,6 +95,11 @@ static const struct dmi_system_id processor_power_dmi_table[] = {
 	  DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
 	  DMI_MATCH(DMI_PRODUCT_NAME,"L8400B series Notebook PC")},
 	 (void *)1},
+	/* T40 can not handle C3 idle state */
+	{ set_max_cstate, "IBM ThinkPad T40", {
+	  DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+	  DMI_MATCH(DMI_PRODUCT_NAME, "23737CU")},
+	 (void *)2},
 	{},
 };