[PATCH] remove ACPI S4bios support

Remove S4BIOS support.  It is pretty useless, and only ever worked for _me_
once.  (I do not think anyone else ever tried it).  It was in feature-removal
for a long time, and it should have been removed before.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/acpi/sleep/main.c

@@ -23,7 +23,6 @@ u8 sleep_states[ACPI_S_STATE_COUNT];
 
 static struct pm_ops acpi_pm_ops;
 
-extern void do_suspend_lowlevel_s4bios(void);
 extern void do_suspend_lowlevel(void);
 
 static u32 acpi_suspend_states[] = {
@@ -98,8 +97,6 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 	case PM_SUSPEND_DISK:
 		if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM)
 			status = acpi_enter_sleep_state(acpi_state);
-		else
-			do_suspend_lowlevel_s4bios();
 		break;
 	case PM_SUSPEND_MAX:
 		acpi_power_off();
@@ -206,11 +203,6 @@ static int __init acpi_sleep_init(void)
 			printk(" S%d", i);
 		}
 		if (i == ACPI_STATE_S4) {
-			if (acpi_gbl_FACS->S4bios_f) {
-				sleep_states[i] = 1;
-				printk(" S4bios");
-				acpi_pm_ops.pm_disk_mode = PM_DISK_FIRMWARE;
-			}
 			if (sleep_states[i])
 				acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
 		}