Merge branch 'acpi-pm'

* acpi-pm:
  ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle
  PM / sleep: Rename platform suspend/resume functions in suspend.c
  PM / sleep: Export dpm_suspend_late/noirq() and dpm_resume_early/noirq()

drivers/acpi/osl.c

@@ -835,7 +835,7 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
 
 	acpi_irq_handler = handler;
 	acpi_irq_context = context;
-	if (request_irq(irq, acpi_irq, IRQF_SHARED | IRQF_NO_SUSPEND, "acpi", acpi_irq)) {
+	if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) {
 		printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
 		acpi_irq_handler = NULL;
 		return AE_NOT_ACQUIRED;

drivers/acpi/sleep.c

@@ -14,6 +14,7 @@
 #include <linux/irq.h>
 #include <linux/dmi.h>
 #include <linux/device.h>
+#include <linux/interrupt.h>
 #include <linux/suspend.h>
 #include <linux/reboot.h>
 #include <linux/acpi.h>
@@ -626,13 +627,28 @@ static int acpi_freeze_begin(void)
 	return 0;
 }
 
+static int acpi_freeze_prepare(void)
+{
+	acpi_enable_all_wakeup_gpes();
+	enable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+	return 0;
+}
+
+static void acpi_freeze_restore(void)
+{
+	disable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+	acpi_enable_all_runtime_gpes();
+}
+
 static void acpi_freeze_end(void)
 {
 	acpi_scan_lock_release();
 }
 
 static const struct platform_freeze_ops acpi_freeze_ops = {
 	.begin = acpi_freeze_begin,
+	.prepare = acpi_freeze_prepare,
+	.restore = acpi_freeze_restore,
 	.end = acpi_freeze_end,
 };
 

drivers/base/power/main.c

@@ -540,7 +540,7 @@ static void async_resume_noirq(void *data, async_cookie_t cookie)
  * Call the "noirq" resume handlers for all devices in dpm_noirq_list and
  * enable device drivers to receive interrupts.
  */
-static void dpm_resume_noirq(pm_message_t state)
+void dpm_resume_noirq(pm_message_t state)
 {
 	struct device *dev;
 	ktime_t starttime = ktime_get();
@@ -662,7 +662,7 @@ static void async_resume_early(void *data, async_cookie_t cookie)
  * dpm_resume_early - Execute "early resume" callbacks for all devices.
  * @state: PM transition of the system being carried out.
  */
-static void dpm_resume_early(pm_message_t state)
+void dpm_resume_early(pm_message_t state)
 {
 	struct device *dev;
 	ktime_t starttime = ktime_get();
@@ -1093,7 +1093,7 @@ static int device_suspend_noirq(struct device *dev)
  * Prevent device drivers from receiving interrupts and call the "noirq" suspend
  * handlers for all non-sysdev devices.
  */
-static int dpm_suspend_noirq(pm_message_t state)
+int dpm_suspend_noirq(pm_message_t state)
 {
 	ktime_t starttime = ktime_get();
 	int error = 0;
@@ -1232,7 +1232,7 @@ static int device_suspend_late(struct device *dev)
  * dpm_suspend_late - Execute "late suspend" callbacks for all devices.
  * @state: PM transition of the system being carried out.
  */
-static int dpm_suspend_late(pm_message_t state)
+int dpm_suspend_late(pm_message_t state)
 {
 	ktime_t starttime = ktime_get();
 	int error = 0;

include/linux/pm.h

@@ -679,12 +679,16 @@ struct dev_pm_domain {
 extern void device_pm_lock(void);
 extern void dpm_resume_start(pm_message_t state);
 extern void dpm_resume_end(pm_message_t state);
+extern void dpm_resume_noirq(pm_message_t state);
+extern void dpm_resume_early(pm_message_t state);
 extern void dpm_resume(pm_message_t state);
 extern void dpm_complete(pm_message_t state);
 
 extern void device_pm_unlock(void);
 extern int dpm_suspend_end(pm_message_t state);
 extern int dpm_suspend_start(pm_message_t state);
+extern int dpm_suspend_noirq(pm_message_t state);
+extern int dpm_suspend_late(pm_message_t state);
 extern int dpm_suspend(pm_message_t state);
 extern int dpm_prepare(pm_message_t state);
 

include/linux/suspend.h

@@ -189,6 +189,8 @@ struct platform_suspend_ops {
 
 struct platform_freeze_ops {
 	int (*begin)(void);
+	int (*prepare)(void);
+	void (*restore)(void);
 	void (*end)(void);
 };
 

kernel/power/suspend.c

@@ -145,18 +145,30 @@ static int platform_suspend_prepare(suspend_state_t state)
 }
 
 static int platform_suspend_prepare_late(suspend_state_t state)
+{
+	return state == PM_SUSPEND_FREEZE && freeze_ops->prepare ?
+		freeze_ops->prepare() : 0;
+}
+
+static int platform_suspend_prepare_noirq(suspend_state_t state)
 {
 	return state != PM_SUSPEND_FREEZE && suspend_ops->prepare_late ?
 		suspend_ops->prepare_late() : 0;
 }
 
-static void platform_suspend_wake(suspend_state_t state)
+static void platform_resume_noirq(suspend_state_t state)
 {
 	if (state != PM_SUSPEND_FREEZE && suspend_ops->wake)
 		suspend_ops->wake();
 }
 
-static void platform_suspend_finish(suspend_state_t state)
+static void platform_resume_early(suspend_state_t state)
+{
+	if (state == PM_SUSPEND_FREEZE && freeze_ops->restore)
+		freeze_ops->restore();
+}
+
+static void platform_resume_finish(suspend_state_t state)
 {
 	if (state != PM_SUSPEND_FREEZE && suspend_ops->finish)
 		suspend_ops->finish();
@@ -172,15 +184,15 @@ static int platform_suspend_begin(suspend_state_t state)
 		return 0;
 }
 
-static void platform_suspend_end(suspend_state_t state)
+static void platform_resume_end(suspend_state_t state)
 {
 	if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->end)
 		freeze_ops->end();
 	else if (suspend_ops->end)
 		suspend_ops->end();
 }
 
-static void platform_suspend_recover(suspend_state_t state)
+static void platform_recover(suspend_state_t state)
 {
 	if (state != PM_SUSPEND_FREEZE && suspend_ops->recover)
 		suspend_ops->recover();
@@ -265,12 +277,21 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
 	if (error)
 		goto Platform_finish;
 
-	error = dpm_suspend_end(PMSG_SUSPEND);
+	error = dpm_suspend_late(PMSG_SUSPEND);
 	if (error) {
-		printk(KERN_ERR "PM: Some devices failed to power down\n");
+		printk(KERN_ERR "PM: late suspend of devices failed\n");
 		goto Platform_finish;
 	}
 	error = platform_suspend_prepare_late(state);
+	if (error)
+		goto Devices_early_resume;
+
+	error = dpm_suspend_noirq(PMSG_SUSPEND);
+	if (error) {
+		printk(KERN_ERR "PM: noirq suspend of devices failed\n");
+		goto Platform_early_resume;
+	}
+	error = platform_suspend_prepare_noirq(state);
 	if (error)
 		goto Platform_wake;
 
@@ -318,11 +339,17 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
 	enable_nonboot_cpus();
 
  Platform_wake:
-	platform_suspend_wake(state);
-	dpm_resume_start(PMSG_RESUME);
+	platform_resume_noirq(state);
+	dpm_resume_noirq(PMSG_RESUME);
+
+ Platform_early_resume:
+	platform_resume_early(state);
+
+ Devices_early_resume:
+	dpm_resume_early(PMSG_RESUME);
 
  Platform_finish:
-	platform_suspend_finish(state);
+	platform_resume_finish(state);
 	return error;
 }
 
@@ -366,11 +393,11 @@ int suspend_devices_and_enter(suspend_state_t state)
 	trace_suspend_resume(TPS("resume_console"), state, false);
 
  Close:
-	platform_suspend_end(state);
+	platform_resume_end(state);
 	return error;
 
  Recover_platform:
-	platform_suspend_recover(state);
+	platform_recover(state);
 	goto Resume_devices;
 }