commit c4003376d234b990c371dad76fe3c3c6e8fe7965
Author: Frans Pop <elendil@planet.nl>
Date:   Thu Sep 20 22:27:44 2007 +0200

    S0 state is always supported

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 638172f..85633c5 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -401,9 +401,11 @@ int __init acpi_sleep_init(void)
 	if (acpi_disabled)
 		return 0;
 
-printk(KERN_INFO PREFIX "(supports");
+	sleep_states[ACPI_STATE_S0] = 1;
+	printk(KERN_INFO PREFIX "(supports S0");
+
 #ifdef CONFIG_SUSPEND
-	for (i = ACPI_STATE_S0; i < ACPI_STATE_S4; i++) {
+	for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) {
 		status = acpi_get_sleep_type_data(i, &type_a, &type_b);
 		if (ACPI_SUCCESS(status)) {
 			sleep_states[i] = 1;