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ACPI / PM: Drop acpi_power_nocheck 

Since acpi_bus_set_power() should not use __acpi_bus_get_power() to
update the device's device->power.state field before changing its
power state (this may cause device->power.state to be inconsistent
with the device power resources' reference counters), remove this
call from it.  In consequence, the acpi_power_nocheck variable is not
necessary any more, so it can be dropped along with the DMI table
used for setting that variable for HP Pavilion 05.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Rafael J. Wysocki 2010-12-11 23:45:30 +01:00 committed by Len Brown
parent f6767dcf2a
commit 53eac700b0
3 changed files with 0 additions and 43 deletions
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39
drivers/acpi/bus.c
View File

@ -52,22 +52,6 @@ EXPORT_SYMBOL(acpi_root_dir);
#define STRUCT_TO_INT(s) (*((int*)&s))
static int set_power_nocheck(const struct dmi_system_id *id)
{
printk(KERN_NOTICE PREFIX "%s detected - "
"disable power check in power transition\n", id->ident);
acpi_power_nocheck = 1;
return 0;
}
static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
{
set_power_nocheck, "HP Pavilion 05", {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"),
DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL},
{},
};
#ifdef CONFIG_X86
static int set_copy_dsdt(const struct dmi_system_id *id)
@ -333,23 +317,6 @@ int acpi_bus_set_power(acpi_handle handle, int state)
return -ENODEV;
}
/*
* Get device's current power state
*/
if (!acpi_power_nocheck) {
/*
* Maybe the incorrect power state is returned on the bogus
* bios, which is different with the real power state.
* For example: the bios returns D0 state and the real power
* state is D3. OS expects to set the device to D0 state. In
* such case if OS uses the power state returned by the BIOS,
* the device can't be transisted to the correct power state.
* So if the acpi_power_nocheck is set, it is unnecessary to
* get the power state by calling acpi_bus_get_power.
*/
__acpi_bus_get_power(device, &device->power.state);
}
return __acpi_bus_set_power(device, state);
}
EXPORT_SYMBOL(acpi_bus_set_power);
@ -1072,12 +1039,6 @@ static int __init acpi_init(void)
if (acpi_disabled)
return result;
/*
* If the laptop falls into the DMI check table, the power state check
* will be disabled in the course of device power transition.
*/
dmi_check_system(power_nocheck_dmi_table);
acpi_scan_init();
acpi_ec_init();
acpi_debugfs_init();

1
drivers/acpi/internal.h
View File

@ -45,7 +45,6 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state);
int acpi_power_on_resources(struct acpi_device *device, int state);
int acpi_power_transition(struct acpi_device *device, int state);
int acpi_bus_init_power(struct acpi_device *device);
extern int acpi_power_nocheck;
int acpi_wakeup_device_init(void);
void acpi_early_processor_set_pdc(void);

3
drivers/acpi/power.c
View File

@ -56,9 +56,6 @@ ACPI_MODULE_NAME("power");
#define ACPI_POWER_RESOURCE_STATE_ON 0x01
#define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
int acpi_power_nocheck;
module_param_named(power_nocheck, acpi_power_nocheck, bool, 000);
static int acpi_power_add(struct acpi_device *device);
static int acpi_power_remove(struct acpi_device *device, int type);
static int acpi_power_resume(struct acpi_device *device);