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ide: workaround suspend bug for ACPI IDE

Browse source 
http://bugzilla.kernel.org/show_bug.cgi?id=9673

ACPI _PS3 cause S4 breaks in the second attempt. The system has a _PS3
method for IDE, which will call into SMM mode. Currently we haven't clue
why just the second attempt fails, as it's totally in BIOS code, so
blacklist the system so far for 2.6.24.

A possible suspect is ACPI NVS isn't save/restore, we will revisit the
bug after linux does ACPI NVS save/restore.

Bart:
- fix scripts/checkpatch.pl complaints
- const-ify ide_acpi_dmi_table[]

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Shaohua Li 2008-01-10 23:03:42 +01:00 committed by Bartlomiej Zolnierkiewicz
parent fd0b45dfd1
commit 90494893b5
1 changed files with 35 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
drivers/ide/ide-acpi.c
View file

@ -16,6 +16,7 @@
#include <acpi/acpi.h>
#include <linux/ide.h>
#include <linux/pci.h>
#include <linux/dmi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acnames.h>
@ -65,6 +66,37 @@ extern int ide_noacpi;
extern int ide_noacpitfs;
extern int ide_noacpionboot;
static bool ide_noacpi_psx;
static int no_acpi_psx(const struct dmi_system_id *id)
{
ide_noacpi_psx = true;
printk(KERN_NOTICE"%s detected - disable ACPI _PSx.\n", id->ident);
return 0;
}
static const struct dmi_system_id ide_acpi_dmi_table[] = {
/* Bug 9673. */
/* We should check if this is because ACPI NVS isn't save/restored. */
{
.callback = no_acpi_psx,
.ident = "HP nx9005",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies Ltd."),
DMI_MATCH(DMI_BIOS_VERSION, "KAM1.60")
},
},
};
static int ide_acpi_blacklist(void)
{
static int done;
if (done)
return 0;
done = 1;
dmi_check_system(ide_acpi_dmi_table);
return 0;
}
/**
* ide_get_dev_handle - finds acpi_handle and PCI device.function
* @dev: device to locate
@ -623,7 +655,7 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
{
int unit;
if (ide_noacpi)
if (ide_noacpi || ide_noacpi_psx)
return;
DEBPRINT("ENTER:\n");
@ -668,6 +700,8 @@ void ide_acpi_init(ide_hwif_t *hwif)
struct ide_acpi_drive_link *master;
struct ide_acpi_drive_link *slave;
ide_acpi_blacklist();
hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL);
if (!hwif->acpidata)
return;