@@ -382,11 +382,36 @@ setup_affinity(unsigned int irq, struct
 }
 #endif
 
+/*
+ * Dummy handler for shared interrupts to use during system suspend.
+ */
+static irqreturn_t irq_pm_dummy_handler(int irq, void *dev_id)
+{
+	return IRQ_SUSPENDED;
+}
+
 void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
 {
 	if (suspend) {
-		if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND))
+		struct irqaction *action;
+
+		if (!desc->action)
 			return;
+
+		for (action = desc->action; action; action = action->next) {
+			if (action->flags & IRQF_NO_SUSPEND)
+				break;
+		}
+		if (action) {
+			for (action = desc->action; action; action = action->next) {
+				if (!(action->flags & IRQF_NO_SUSPEND)) {
+					action->saved_handler = action->handler;
+					action->handler = irq_pm_dummy_handler;
+				}
+			}
+			return;
+		}
+
 		desc->istate |= IRQS_SUSPENDED;
 	}
 

@@ -445,6 +470,14 @@ EXPORT_SYMBOL(disable_irq);
 void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume)
 {
 	if (resume) {
+		struct irqaction *action;
+
+		for (action = desc->action; action; action = action->next) {
+			if (action->handler == irq_pm_dummy_handler) {
+				action->handler = action->saved_handler;
+				action->saved_handler = NULL;
+			}
+		}
 		if (!(desc->istate & IRQS_SUSPENDED)) {
 			if (!desc->action)
 				return;

@@ -90,6 +90,7 @@ typedef irqreturn_t (*irq_handler_t)(int
 /**
  * struct irqaction - per interrupt action descriptor
  * @handler:	interrupt handler function
+ * @saved_handler:	saved pointer to interrupt handler function
  * @name:	name of the device
  * @dev_id:	cookie to identify the device
  * @percpu_dev_id:	cookie to identify the device

@@ -104,6 +105,7 @@ typedef irqreturn_t (*irq_handler_t)(int
  */
 struct irqaction {
 	irq_handler_t		handler;
+	irq_handler_t		saved_handler;
 	void			*dev_id;
 	void __percpu		*percpu_dev_id;
 	struct irqaction	*next;

@@ -175,8 +175,7 @@ handle_irq_event_percpu(struct irq_desc
 
 	add_interrupt_randomness(irq, flags);
 
-	if (!noirqdebug)
-		note_interrupt(irq, desc, retval);
+	note_interrupt(irq, desc, retval);
 	return retval;
 }
 

@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/moduleparam.h>
 #include <linux/timer.h>
+#include <linux/suspend.h>
 
 #include "internals.h"
 

@@ -275,10 +276,25 @@ try_misrouted_irq(unsigned int irq, stru
 void note_interrupt(unsigned int irq, struct irq_desc *desc,
 		    irqreturn_t action_ret)
 {
+	if (unlikely(action_ret == IRQ_SUSPENDED)) {
+		pr_err("IRQ %d: Unhandled interrupt from suspended device\n", irq);
+
+		desc->istate |= IRQS_SUSPENDED;
+		desc->depth++;
+		irq_disable(desc);
+		pm_system_wakeup();
+		return;
+	}
+
+	if (noirqdebug)
+		return;
+
 	if (desc->istate & IRQS_POLL_INPROGRESS ||
 	    irq_settings_is_polled(desc))
 		return;
 
+	action_ret &= ~IRQ_SUSPENDED;
+
 	if (bad_action_ret(action_ret)) {
 		report_bad_irq(irq, desc, action_ret);
 		return;

@@ -371,6 +371,8 @@ extern int unregister_pm_notifier(struct
 extern bool events_check_enabled;
 
 extern bool pm_wakeup_pending(void);
+extern void pm_system_wakeup(void);
+extern void pm_wakeup_clear(void);
 extern bool pm_get_wakeup_count(unsigned int *count, bool block);
 extern bool pm_save_wakeup_count(unsigned int count);
 extern void pm_wakep_autosleep_enabled(bool set);

@@ -418,6 +420,7 @@ static inline int unregister_pm_notifier
 #define pm_notifier(fn, pri)	do { (void)(fn); } while (0)
 
 static inline bool pm_wakeup_pending(void) { return false; }
+static inline void pm_system_wakeup(void) {}
 
 static inline void lock_system_sleep(void) {}
 static inline void unlock_system_sleep(void) {}

@@ -691,6 +691,8 @@ void pm_print_active_wakeup_sources(void
 }
 EXPORT_SYMBOL_GPL(pm_print_active_wakeup_sources);
 
+static bool abort_suspend;
+
 /**
  * pm_wakeup_pending - Check if power transition in progress should be aborted.
  *

@@ -712,6 +714,7 @@ bool pm_wakeup_pending(void)
 		ret = (cnt != saved_count || inpr > 0);
 		events_check_enabled = !ret;
 	}
+	ret = ret || abort_suspend;
 	spin_unlock_irqrestore(&events_lock, flags);
 
 	if (ret) {

@@ -722,6 +725,23 @@ bool pm_wakeup_pending(void)
 	return ret;
 }
 
+void pm_system_wakeup(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&events_lock, flags);
+	abort_suspend = true;
+	spin_unlock_irqrestore(&events_lock, flags);
+	freeze_wake();
+}
+
+void pm_wakeup_clear(void)
+{
+	spin_lock_irq(&events_lock);
+	abort_suspend = false;
+	spin_unlock_irq(&events_lock);
+}
+
 /**
  * pm_get_wakeup_count - Read the number of registered wakeup events.
  * @count: Address to store the value at.

@@ -1648,6 +1648,7 @@ int dpm_suspend_start(pm_message_t state
 {
 	int error;
 
+	pm_wakeup_clear();
 	error = dpm_prepare(state);
 	if (error) {
 		suspend_stats.failed_prepare++;

@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/syscore_ops.h>
+#include <linux/suspend.h>
 
 #include "internals.h"
 

@@ -35,8 +36,7 @@ void suspend_device_irqs(void)
 	}
 
 	for_each_irq_desc(irq, desc)
-		if (desc->istate & IRQS_SUSPENDED)
-			synchronize_irq(irq);
+		synchronize_irq(irq);
 }
 EXPORT_SYMBOL_GPL(suspend_device_irqs);
 

@@ -102,6 +102,9 @@ int check_wakeup_irqs(void)
 	struct irq_desc *desc;
 	int irq;
 
+	if (pm_wakeup_pending())
+		return -EBUSY;
+
 	for_each_irq_desc(irq, desc) {
 		/*
 		 * Only interrupts which are marked as wakeup source

@@ -6,11 +6,13 @@
  * @IRQ_NONE		interrupt was not from this device
  * @IRQ_HANDLED		interrupt was handled by this device
  * @IRQ_WAKE_THREAD	handler requests to wake the handler thread
+ * @IRQ_SUSPENDED	interrupt has been suspended for this device
  */
 enum irqreturn {
 	IRQ_NONE		= (0 << 0),
 	IRQ_HANDLED		= (1 << 0),
 	IRQ_WAKE_THREAD		= (1 << 1),
+	IRQ_SUSPENDED		= (1 << 2),
 };
 
 typedef enum irqreturn irqreturn_t;