Merge tag 'pm-extra-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These add new CPU IDs to a couple of drivers, fix a possible NULL
  pointer dereference in the cpuidle core, update DT-related things in
  the generic power domains framework and finally update the
  suspend/resume infrastructure to improve the handling of wakeups from
  suspend-to-idle.

  Specifics:

   - Add Intel Gemini Lake CPU IDs to the intel_idle and intel_rapl
     drivers (David Box).

   - Add a NULL pointer check to the cpuidle core to prevent it from
     crashing on platforms with incomplete cpuidle configuration (Fei
     Li).

   - Fix DT-related documentation in the generic power domains (genpd)
     framework and add a MAINTAINERS entry for DT-related material in
     genpd (Viresh Kumar).

   - Update the system suspend/resume infrastructure to improve the
     handling of aborts of suspend transitions in progress in the wakeup
     framework and rework the suspend-to-idle core loop to make it
     possible to filter out spurious wakeup events (specifically the
     ones coming from ACPI) without resuming all the way up to user
     space every time (Rafael Wysocki)"

* tag 'pm-extra-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle
  PM / wakeup: Integrate mechanism to abort transitions in progress
  x86/intel_idle: add Gemini Lake support
  cpuidle: check dev before usage in cpuidle_use_deepest_state()
  powercap: intel_rapl: Add support for Gemini Lake
  PM / Domains: Add DT file to MAINTAINERS
  PM / Domains: Fix DT example

4 files changed, 34 insertions, 4 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index d42eeef9d928..a9a9ab3399d4 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -782,7 +782,7 @@ static int acpi_battery_update(struct acpi_battery *battery, bool resume)
 	if ((battery->state & ACPI_BATTERY_STATE_CRITICAL) ||
 	    (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) &&
             (battery->capacity_now <= battery->alarm)))
-		pm_wakeup_event(&battery->device->dev, 0);
+		pm_wakeup_hard_event(&battery->device->dev);
 
 	return result;
 }
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 668137e4a069..b7c2a06963d6 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -216,7 +216,7 @@ static int acpi_lid_notify_state(struct acpi_device *device, int state)
 	}
 
 	if (state)
-		pm_wakeup_event(&device->dev, 0);
+		pm_wakeup_hard_event(&device->dev);
 
 	ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device);
 	if (ret == NOTIFY_DONE)
@@ -398,7 +398,7 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 		} else {
 			int keycode;
 
-			pm_wakeup_event(&device->dev, 0);
+			pm_wakeup_hard_event(&device->dev);
 			if (button->suspended)
 				break;
 
@@ -530,6 +530,7 @@ static int acpi_button_add(struct acpi_device *device)
 		lid_device = device;
 	}
 
+	device_init_wakeup(&device->dev, true);
 	printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
 	return 0;
 
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 993fd31394c8..798d5003a039 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -24,6 +24,7 @@
 #include <linux/pm_qos.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
+#include <linux/suspend.h>
 
 #include "internal.h"
 
@@ -399,7 +400,7 @@ static void acpi_pm_notify_handler(acpi_handle handle, u32 val, void *not_used)
 	mutex_lock(&acpi_pm_notifier_lock);
 
 	if (adev->wakeup.flags.notifier_present) {
-		__pm_wakeup_event(adev->wakeup.ws, 0);
+		pm_wakeup_ws_event(adev->wakeup.ws, 0, true);
 		if (adev->wakeup.context.work.func)
 			queue_pm_work(&adev->wakeup.context.work);
 	}
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index a4327af676fe..e84005d642e6 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -662,14 +662,40 @@ static int acpi_freeze_prepare(void)
 	acpi_os_wait_events_complete();
 	if (acpi_sci_irq_valid())
 		enable_irq_wake(acpi_sci_irq);
+
 	return 0;
 }
 
+static void acpi_freeze_wake(void)
+{
+	/*
+	 * If IRQD_WAKEUP_ARMED is not set for the SCI at this point, it means
+	 * that the SCI has triggered while suspended, so cancel the wakeup in
+	 * case it has not been a wakeup event (the GPEs will be checked later).
+	 */
+	if (acpi_sci_irq_valid() &&
+	    !irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq)))
+		pm_system_cancel_wakeup();
+}
+
+static void acpi_freeze_sync(void)
+{
+	/*
+	 * Process all pending events in case there are any wakeup ones.
+	 *
+	 * The EC driver uses the system workqueue, so that one needs to be
+	 * flushed too.
+	 */
+	acpi_os_wait_events_complete();
+	flush_scheduled_work();
+}
+
 static void acpi_freeze_restore(void)
 {
 	acpi_disable_wakeup_devices(ACPI_STATE_S0);
 	if (acpi_sci_irq_valid())
 		disable_irq_wake(acpi_sci_irq);
+
 	acpi_enable_all_runtime_gpes();
 }
 
@@ -681,6 +707,8 @@ static void acpi_freeze_end(void)
 static const struct platform_freeze_ops acpi_freeze_ops = {
 	.begin = acpi_freeze_begin,
 	.prepare = acpi_freeze_prepare,
+	.wake = acpi_freeze_wake,
+	.sync = acpi_freeze_sync,
 	.restore = acpi_freeze_restore,
 	.end = acpi_freeze_end,
 };