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Kirill Smelkov
linux
Commits
267b59f5
Commit
267b59f5
authored
May 29, 2002
by
Pavel Machek
Committed by
Linus Torvalds
May 29, 2002
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[PATCH] suspend-to-ram: clean up according to Andy
Andy did not quite like the comments, please apply this.
parent
8085cd28
Changes
3
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3 changed files
with
10 additions
and
20 deletions
+10
-20
arch/i386/kernel/acpi.c
arch/i386/kernel/acpi.c
+7
-16
arch/i386/kernel/acpi_wakeup.S
arch/i386/kernel/acpi_wakeup.S
+2
-3
drivers/acpi/acpi_system.c
drivers/acpi/acpi_system.c
+1
-1
No files found.
arch/i386/kernel/acpi.c
View file @
267b59f5
...
...
@@ -625,22 +625,14 @@ void __init acpi_reserve_bootmem(void)
printk
(
KERN_DEBUG
"ACPI: have wakeup address 0x%8.8lx
\n
"
,
acpi_wakeup_address
);
}
/*
* (KG): Since we affect stack here, we make this function as flat and easy
* as possible in order to not provoke gcc to use local variables on the stack.
* Note that on resume, all (expect nosave) variables will have the state from
* the time of writing (suspend_save_image) and the registers (including the
* stack pointer, but excluding the instruction pointer) will be loaded with
* the values saved at save_processor_context() time.
*/
void
do_suspend_magic
(
int
resume
)
void
do_suspend_lowlevel
(
int
resume
)
{
/* DANGER WILL ROBINSON!
*
* If this function is too difficult for gcc to optimize, it will crash and burn!
* see above.
*
* DO NOT TOUCH.
/*
* FIXME: This function should really be written in assembly. Actually
* requirement is that it does not touch stack, because %esp will be
* wrong during resume before restore_processor_context(). Check
* assembly if you modify this.
*/
if
(
!
resume
)
{
save_processor_context
();
...
...
@@ -650,7 +642,6 @@ void do_suspend_magic(int resume)
}
acpi_sleep_done:
restore_processor_context
();
printk
(
"CPU context restored...
\n
"
);
}
#endif
/*CONFIG_ACPI_SLEEP*/
...
...
arch/i386/kernel/acpi_wakeup.S
View file @
267b59f5
...
...
@@ -179,7 +179,7 @@ wakeup_pmode_return:
rep
lodsb
movw
$
0x0e00
+
'O'
,
%
ds
:
(
0xb8018
)
movl
%
cs
:
saved_magic
2
,
%
eax
movl
%
cs
:
saved_magic
,
%
eax
cmpl
$
0x12345678
,
%
eax
jne
bogus_magic
...
...
@@ -243,7 +243,7 @@ ENTRY(acpi_copy_wakeup_routine)
movl
saved_videomode
,
%
edx
movl
%
edx
,
video_mode
-
wakeup_start
(%
eax
)
movl
$
0x12345678
,
real_magic
-
wakeup_start
(%
eax
)
movl
$
0x12345678
,
saved_magic
2
movl
$
0x12345678
,
saved_magic
#
restore
the
regs
we
used
popl
%
edi
...
...
@@ -261,7 +261,6 @@ ENTRY(saved_eip) .long 0
ENTRY
(
saved_esp
)
.
long
0
ENTRY
(
saved_magic
)
.
long
0
ENTRY
(
saved_magic2
)
.
long
0
ALIGN
#
saved
registers
...
...
drivers/acpi/acpi_system.c
View file @
267b59f5
...
...
@@ -268,7 +268,7 @@ acpi_system_suspend(
case
ACPI_STATE_S2
:
case
ACPI_STATE_S3
:
do_suspend_
magic
(
0
);
do_suspend_
lowlevel
(
0
);
break
;
}
...
...
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