[2.6 patch] remove ACPI S4bios support
From: Adrian Bunk (bunk_at_stusta.de)
Date: 08/22/05
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Date: Mon, 22 Aug 2005 18:20:44 +0200 To: Andrew Morton <akpm@osdl.org>
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.
From: Pavel Machek <pavel@suse.cz>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
---
This patch was sent by Pavel Machek on:
- 12 Aug 2005
I made the following changes to it:
- drivers/acpi/sleep/proc.c chunk did no longer apply due to
unrelated context changes
- remove the feature-removal-schedule.txt entry
Documentation/feature-removal-schedule.txt | 8 --------
arch/i386/kernel/acpi/wakeup.S | 6 ------
drivers/acpi/sleep/main.c | 8 --------
drivers/acpi/sleep/poweroff.c | 4 +---
drivers/acpi/sleep/proc.c | 2 --
5 files changed, 1 insertion(+), 27 deletions(-)
--- linux-2.6.13-rc6-mm1-full/Documentation/feature-removal-schedule.txt.old 2005-08-22 00:32:08.000000000 +0200
+++ linux-2.6.13-rc6-mm1-full/Documentation/feature-removal-schedule.txt 2005-08-22 00:32:17.000000000 +0200
@@ -17,14 +17,6 @@
---------------------------
-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
--- a/arch/i386/kernel/acpi/wakeup.S
+++ b/arch/i386/kernel/acpi/wakeup.S
@@ -320,12 +320,6 @@ 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
--- 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
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
--- 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;
}
--- linux-2.6.13-rc6-mm1-full/drivers/acpi/sleep/proc.c.old 2005-08-22 00:33:58.000000000 +0200
+++ linux-2.6.13-rc6-mm1-full/drivers/acpi/sleep/proc.c 2005-08-22 00:34:55.000000000 +0200
@@ -25,8 +25,6 @@
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 ");
}
}
-
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