[PATCH 43/48] ACPI / PM: Drop acpi_power_nocheck

Len Brown
2011-01-12T18:00:24Z

From: Rafael J. Wysocki <rjw@sisk.pl>

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>
---
drivers/acpi/bus.c | 39 ---------------------------------------
drivers/acpi/internal.h | 1 -
drivers/acpi/power.c | 3 ---
3 files changed, 0 insertions(+), 43 deletions(-)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 0baa5f9..7ced61f 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -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();
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 7493e6c..8df5d70 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -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);
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 0cb4eab..0003f10 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -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);
--
1.7.4.rc1.7.g2cf08