Merge tag 'pm+acpi-3.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "Still fixing regressions (partly by reverting commits that broke
  things for people), fixing other stable-candidate bugs and adding some
  blacklist entries for ACPI video and _OSI.

  Two ACPICA regression fixes (one recent and one for a 3.14 commit), a
  fix for an ACPI-related regression in TPM (introduced in 3.14), a
  revert of the ACPI AC driver conversion in 3.13 that went wrong for an
  unknown reason, two reverts of commits that attempted to remove an old
  user space interface in /proc and broke some utilities, in 3.13 too, a
  fix for a CPU hotplug bug in the ACPI processor driver (stable
  material), two (stable candidate) fixes for intel_pstate and a few new
  blacklist entries, mostly for systems that shipped with Windows 8.

  Specifics:

   - ACPICA fix for a stale pointer access introduced by a recent commit
     in the XSDT validation code from Lv Zheng.

   - ACPICA fix for the default value of the command line switch to
     favor 32-bit FADT addresses (in case there's a conflict between a
     64-bit and a 32-bit address).  The previous default was that the
     32-bit version would take precedence and we tried to change it to
     the other way around and it didn't work.  From Lv Zheng.

   - A TPM commit related to ACPI _DSM in 3.14 caused the driver to
     refuse to load if a specific _DSM was missing and that broke resume
     from system suspend on Chromebooks that require the TPM hardware to
     be restored to a working state during resume by the OS.  Restore
     the old behavior to load the driver if the _DSM in question is not
     present, but prevent it from using the feature the _DSM is for.

   - ACPI AC driver conversion in 3.13 broke thermal management on at
     least one machine and has to be reverted.  From Guenter Roeck.

   - Two reverts of 3.13 commits that attempted to remove the old ACPI
     battery interface in /proc, but turned out to break some utilities
     still using that interface.  From Lan Tianyu.

   - ACPI processor driver fix to prevent acpi_processor_add() from
     modifying the CPU device's .offline field which leads to breakage
     if the initial online of the CPU fails.  From Igor Mammedov.

   - Two intel_pstate fixes, one to take a BayTrail documentation update
     into account and one to avoid forcing the maximum P-state on init
     which causes CPU PM trouble on systems with P-states coordination
     when one of the CPU cores is initialized after an offline/online
     cycle triggered by user space.  Both stable candidates, from Dirk
     Brandewie.

   - Fix for the ACPI video DMI blacklist entry for Dell Inspiron 7520
     from Aaron Lu.

   - Two new ACPI video blacklist entries for machines shipping with
     Win8 that need to use native backlight so that it can be controlled
     in a usual way (which doesn't work otherwise due bugs in the ACPI
     tables) from Hans de Goede.

   - Two ACPI _OSI quirks for systems that need them to work correctly
     with Linux from Edward Lin and Hans de Goede"

* tag 'pm+acpi-3.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: Revert native brightness quirk for ThinkPad T530
  intel_pstate: remove setting P state to MAX on init
  ACPICA: Tables: Restore old behavor to favor 32-bit FADT addresses.
  ACPI / video: correct DMI tag for Dell Inspiron 7520
  intel_pstate: Set turbo VID for BayTrail
  ACPI / TPM: Fix resume regression on Chromebooks
  ACPI / proc: Do not say when /proc interfaces will be deleted in Kconfig
  ACPI / processor: do not mark present at boot but not onlined CPU as onlined
  ACPI: Revert "ACPI / AC: convert ACPI ac driver to platform bus"
  ACPI / blacklist: Add dmi_enable_osi_linux quirk for Asus EEE PC 1015PX
  ACPI: blacklist win8 OSI for Dell Inspiron 7737
  ACPI / video: Add use_native_backlight quirks for more systems
  ACPI: Revert "ACPI / Battery: Remove battery's proc directory"
  ACPI: Revert "ACPI: Remove CONFIG_ACPI_PROCFS_POWER and cm_sbsc.c"
  ACPICA: Tables: Fix invalid pointer accesses in acpi_tb_parse_root_table().

1 files changed, 58 insertions, 59 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 2c01c1da29c..c67f6f5ad61 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -52,11 +52,39 @@ MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI AC Adapter Driver");
 MODULE_LICENSE("GPL");
 
+static int acpi_ac_add(struct acpi_device *device);
+static int acpi_ac_remove(struct acpi_device *device);
+static void acpi_ac_notify(struct acpi_device *device, u32 event);
+
+static const struct acpi_device_id ac_device_ids[] = {
+	{"ACPI0003", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, ac_device_ids);
+
+#ifdef CONFIG_PM_SLEEP
+static int acpi_ac_resume(struct device *dev);
+#endif
+static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
+
 static int ac_sleep_before_get_state_ms;
 
+static struct acpi_driver acpi_ac_driver = {
+	.name = "ac",
+	.class = ACPI_AC_CLASS,
+	.ids = ac_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+	.ops = {
+		.add = acpi_ac_add,
+		.remove = acpi_ac_remove,
+		.notify = acpi_ac_notify,
+		},
+	.drv.pm = &acpi_ac_pm,
+};
+
 struct acpi_ac {
 	struct power_supply charger;
-	struct platform_device *pdev;
+	struct acpi_device * device;
 	unsigned long long state;
 	struct notifier_block battery_nb;
 };
@@ -69,10 +97,12 @@ struct acpi_ac {
 
 static int acpi_ac_get_state(struct acpi_ac *ac)
 {
-	acpi_status status;
-	acpi_handle handle = ACPI_HANDLE(&ac->pdev->dev);
+	acpi_status status = AE_OK;
+
+	if (!ac)
+		return -EINVAL;
 
-	status = acpi_evaluate_integer(handle, "_PSR", NULL,
+	status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,
 				       &ac->state);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status,
@@ -117,10 +147,9 @@ static enum power_supply_property ac_props[] = {
                                    Driver Model
    -------------------------------------------------------------------------- */
 
-static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data)
+static void acpi_ac_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_ac *ac = data;
-	struct acpi_device *adev;
+	struct acpi_ac *ac = acpi_driver_data(device);
 
 	if (!ac)
 		return;
@@ -143,11 +172,10 @@ static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data)
 			msleep(ac_sleep_before_get_state_ms);
 
 		acpi_ac_get_state(ac);
-		adev = ACPI_COMPANION(&ac->pdev->dev);
-		acpi_bus_generate_netlink_event(adev->pnp.device_class,
-						dev_name(&ac->pdev->dev),
-						event, (u32) ac->state);
-		acpi_notifier_call_chain(adev, event, (u32) ac->state);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  dev_name(&device->dev), event,
+						  (u32) ac->state);
+		acpi_notifier_call_chain(device, event, (u32) ac->state);
 		kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
 	}
 
@@ -192,49 +220,39 @@ static struct dmi_system_id ac_dmi_table[] = {
 	{},
 };
 
-static int acpi_ac_probe(struct platform_device *pdev)
+static int acpi_ac_add(struct acpi_device *device)
 {
 	int result = 0;
 	struct acpi_ac *ac = NULL;
-	struct acpi_device *adev;
 
-	if (!pdev)
-		return -EINVAL;
 
-	adev = ACPI_COMPANION(&pdev->dev);
-	if (!adev)
-		return -ENODEV;
+	if (!device)
+		return -EINVAL;
 
 	ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
 	if (!ac)
 		return -ENOMEM;
 
-	strcpy(acpi_device_name(adev), ACPI_AC_DEVICE_NAME);
-	strcpy(acpi_device_class(adev), ACPI_AC_CLASS);
-	ac->pdev = pdev;
-	platform_set_drvdata(pdev, ac);
+	ac->device = device;
+	strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
+	strcpy(acpi_device_class(device), ACPI_AC_CLASS);
+	device->driver_data = ac;
 
 	result = acpi_ac_get_state(ac);
 	if (result)
 		goto end;
 
-	ac->charger.name = acpi_device_bid(adev);
+	ac->charger.name = acpi_device_bid(device);
 	ac->charger.type = POWER_SUPPLY_TYPE_MAINS;
 	ac->charger.properties = ac_props;
 	ac->charger.num_properties = ARRAY_SIZE(ac_props);
 	ac->charger.get_property = get_ac_property;
-	result = power_supply_register(&pdev->dev, &ac->charger);
+	result = power_supply_register(&ac->device->dev, &ac->charger);
 	if (result)
 		goto end;
 
-	result = acpi_install_notify_handler(ACPI_HANDLE(&pdev->dev),
-			ACPI_ALL_NOTIFY, acpi_ac_notify_handler, ac);
-	if (result) {
-		power_supply_unregister(&ac->charger);
-		goto end;
-	}
 	printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
-	       acpi_device_name(adev), acpi_device_bid(adev),
+	       acpi_device_name(device), acpi_device_bid(device),
 	       ac->state ? "on-line" : "off-line");
 
 	ac->battery_nb.notifier_call = acpi_ac_battery_notify;
@@ -256,7 +274,7 @@ static int acpi_ac_resume(struct device *dev)
 	if (!dev)
 		return -EINVAL;
 
-	ac = platform_get_drvdata(to_platform_device(dev));
+	ac = acpi_driver_data(to_acpi_device(dev));
 	if (!ac)
 		return -EINVAL;
 
@@ -270,19 +288,17 @@ static int acpi_ac_resume(struct device *dev)
 #else
 #define acpi_ac_resume NULL
 #endif
-static SIMPLE_DEV_PM_OPS(acpi_ac_pm_ops, NULL, acpi_ac_resume);
 
-static int acpi_ac_remove(struct platform_device *pdev)
+static int acpi_ac_remove(struct acpi_device *device)
 {
-	struct acpi_ac *ac;
+	struct acpi_ac *ac = NULL;
+
 
-	if (!pdev)
+	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
 
-	acpi_remove_notify_handler(ACPI_HANDLE(&pdev->dev),
-			ACPI_ALL_NOTIFY, acpi_ac_notify_handler);
+	ac = acpi_driver_data(device);
 
-	ac = platform_get_drvdata(pdev);
 	if (ac->charger.dev)
 		power_supply_unregister(&ac->charger);
 	unregister_acpi_notifier(&ac->battery_nb);
@@ -292,23 +308,6 @@ static int acpi_ac_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct acpi_device_id acpi_ac_match[] = {
-	{ "ACPI0003", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, acpi_ac_match);
-
-static struct platform_driver acpi_ac_driver = {
-	.probe          = acpi_ac_probe,
-	.remove         = acpi_ac_remove,
-	.driver         = {
-		.name   = "acpi-ac",
-		.owner  = THIS_MODULE,
-		.pm     = &acpi_ac_pm_ops,
-		.acpi_match_table = ACPI_PTR(acpi_ac_match),
-	},
-};
-
 static int __init acpi_ac_init(void)
 {
 	int result;
@@ -316,7 +315,7 @@ static int __init acpi_ac_init(void)
 	if (acpi_disabled)
 		return -ENODEV;
 
-	result = platform_driver_register(&acpi_ac_driver);
+	result = acpi_bus_register_driver(&acpi_ac_driver);
 	if (result < 0)
 		return -ENODEV;
 
@@ -325,7 +324,7 @@ static int __init acpi_ac_init(void)
 
 static void __exit acpi_ac_exit(void)
 {
-	platform_driver_unregister(&acpi_ac_driver);
+	acpi_bus_unregister_driver(&acpi_ac_driver);
 }
 module_init(acpi_ac_init);
 module_exit(acpi_ac_exit);