[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>

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 5f95d4b..784e08c 100644 (file)
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -17,14 +17,6 @@ Who: Greg Kroah-Hartman <greg@kroah.com>
 
 ---------------------------
 
-What:  ACPI S4bios support
-When:  May 2005
-Why:   Noone uses it, and it probably does not work, anyway. swsusp is
-       faster, more reliable, and people are actually using it.
-Who:   Pavel Machek <pavel@suse.cz>
-
----------------------------
-
 What:  io_remap_page_range() (macro or function)
 When:  September 2005
 Why:   Replaced by io_remap_pfn_range() which allows more memory space

diff --git a/arch/i386/kernel/acpi/wakeup.S b/arch/i386/kernel/acpi/wakeup.S
index 44d886c..7c74fe0 100644 (file)
--- a/arch/i386/kernel/acpi/wakeup.S
+++ b/arch/i386/kernel/acpi/wakeup.S
@@ -304,12 +304,6 @@ ret_point:
        call    restore_processor_state
        ret
 
-ENTRY(do_suspend_lowlevel_s4bios)
-       call save_processor_state
-       call save_registers
-       call acpi_enter_sleep_state_s4bios
-       ret
-
 ALIGN
 # saved registers
 saved_gdt:     .long   0,0

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 7249ba2..aee50b4 100644 (file)
--- a/drivers/acpi/sleep/main.c
+++ b/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;
                }

diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c
index a5f947d..af7935a 100644 (file)
--- a/drivers/acpi/sleep/poweroff.c
+++ b/drivers/acpi/sleep/poweroff.c
@@ -21,9 +21,7 @@ int acpi_sleep_prepare(u32 acpi_state)
 {
 #ifdef CONFIG_ACPI_SLEEP
        /* do we have a wakeup address for S2 and S3? */
-       /* Here, we support only S4BIOS, those we set the wakeup address */
-       /* S4OS is only supported for now via swsusp.. */
-       if (acpi_state == ACPI_STATE_S3 || acpi_state == ACPI_STATE_S4) {
+       if (acpi_state == ACPI_STATE_S3) {
                if (!acpi_wakeup_address) {
                        return -EFAULT;
                }

diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 09a603f..4696a85 100644 (file)
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -25,8 +25,6 @@ static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
        for (i = 0; i <= ACPI_STATE_S5; i++) {
                if (sleep_states[i]) {
                        seq_printf(seq, "S%d ", i);
-                       if (i == ACPI_STATE_S4 && acpi_gbl_FACS->S4bios_f)
-                               seq_printf(seq, "S4bios ");
                }
        }