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Commit 7728f036 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pm+acpi-3.11-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 

Pull more power management and ACPI updates from Rafael Wysocki:

 - Fix for a recent cpufreq regression that caused WARN() to trigger
   overzealously in a couple of places and spam the kernel log with
   useless garbage as a result.  From Viresh Kumar.

 - ACPI dock fix removing a discrepancy between the definition of
   acpi_dock_init(), which says that the function returns int, and its
   header in the header file, which says that it is a void function.
   The function is now defined as void too.

 - ACPI PM fix for failures to update device power states as needed, for
   example, during resume from system suspend, because the old state was
   deeper than the new one, but the new one is not D0.

 - Fix for two debug messages in the ACPI power resources code that
   don't have a newline at the end and make the kernel log difficult to
   read.  From Mika Westerberg.

 - Two ACPI cleanups from Naresh Bhat and Haicheng Li.

 - cpupower updates from Thomas Renninger, including Intel Haswell
   support improvements and a new idle-set subcommand among other
   things.

* tag 'pm+acpi-3.11-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / power: add missing newline to debug messages
  cpupower: Add Haswell family 0x45 specific idle monitor to show PC8,9,10 states
  cpupower: Haswell also supports the C-states introduced with SandyBridge
  cpupower: Introduce idle-set subcommand and C-state enabling/disabling
  cpupower: Implement disabling of cstate interface
  cpupower: Make idlestate usage unsigned
  ACPI / fan: Initialize acpi_state variable
  ACPI / scan: remove unused LIST_HEAD(acpi_device_list)
  ACPI / dock: Actually define acpi_dock_init() as void
  ACPI / PM: Fix corner case in acpi_bus_update_power()
  cpufreq: Fix serialization of frequency transitions
parents 8cbd0eef d8851b4b

drivers/acpi/device_pm.c

+18 −5
Original line number Original line Diff line number Diff line
@@ -324,14 +324,27 @@ int acpi_bus_update_power(acpi_handle handle, int *state_p) 
	if (result)

	if (result)

		return result;

		return result;





	if (state == ACPI_STATE_UNKNOWN)

	if (state == ACPI_STATE_UNKNOWN) {

		state = ACPI_STATE_D0;

		state = ACPI_STATE_D0;



		result = acpi_device_set_power(device, state);

		result = acpi_device_set_power(device, state);

	if (!result && state_p)

		if (result)

			return result;

	} else {

		if (device->power.flags.power_resources) {

			/*

			 * We don't need to really switch the state, bu we need

			 * to update the power resources' reference counters.

			 */

			result = acpi_power_transition(device, state);

			if (result)

				return result;

		}

		device->power.state = state;

	}

	if (state_p)

		*state_p = state;

		*state_p = state;





	return result;

	return 0;

}

}

EXPORT_SYMBOL_GPL(acpi_bus_update_power);

EXPORT_SYMBOL_GPL(acpi_bus_update_power);

drivers/acpi/dock.c

+3 −4
Original line number Original line Diff line number Diff line
@@ -1064,10 +1064,10 @@ find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv) 
	return AE_OK;

	return AE_OK;

}

}





int __init acpi_dock_init(void)

void __init acpi_dock_init(void)

{

{

	if (acpi_disabled)

	if (acpi_disabled)

		return 0;

		return;





	/* look for dock stations and bays */

	/* look for dock stations and bays */

	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,

	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
@@ -1075,11 +1075,10 @@ int __init acpi_dock_init(void) 




	if (!dock_station_count) {

	if (!dock_station_count) {

		pr_info(PREFIX "No dock devices found.\n");

		pr_info(PREFIX "No dock devices found.\n");

		return 0;

		return;

	}

	}





	register_acpi_bus_notifier(&dock_acpi_notifier);

	register_acpi_bus_notifier(&dock_acpi_notifier);

	pr_info(PREFIX "%s: %d docks/bays found\n",

	pr_info(PREFIX "%s: %d docks/bays found\n",

		ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);

		ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);

	return 0;

}
 
}

drivers/acpi/fan.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -84,7 +84,7 @@ static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long 
{

{

	struct acpi_device *device = cdev->devdata;

	struct acpi_device *device = cdev->devdata;

	int result;

	int result;

	int acpi_state;

	int acpi_state = ACPI_STATE_D0;





	if (!device)

	if (!device)

		return -EINVAL;

		return -EINVAL;

drivers/acpi/power.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -279,7 +279,7 @@ static int acpi_power_on_unlocked(struct acpi_power_resource *resource) 




	if (resource->ref_count++) {

	if (resource->ref_count++) {

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

				  "Power resource [%s] already on",

				  "Power resource [%s] already on\n",

				  resource->name));

				  resource->name));

	} else {

	} else {

		result = __acpi_power_on(resource);

		result = __acpi_power_on(resource);
@@ -325,7 +325,7 @@ static int acpi_power_off_unlocked(struct acpi_power_resource *resource) 




	if (!resource->ref_count) {

	if (!resource->ref_count) {

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

				  "Power resource [%s] already off",

				  "Power resource [%s] already off\n",

				  resource->name));

				  resource->name));

		return 0;

		return 0;

	}

	}

drivers/acpi/scan.c

+0 −1
Original line number Original line Diff line number Diff line
@@ -35,7 +35,6 @@ bool acpi_force_hot_remove; 




static const char *dummy_hid = "device";

static const char *dummy_hid = "device";





static LIST_HEAD(acpi_device_list);

static LIST_HEAD(acpi_bus_id_list);

static LIST_HEAD(acpi_bus_id_list);

static DEFINE_MUTEX(acpi_scan_lock);

static DEFINE_MUTEX(acpi_scan_lock);

static LIST_HEAD(acpi_scan_handlers_list);

static LIST_HEAD(acpi_scan_handlers_list);