@@ -385,7 +385,7 @@ setup_affinity(unsigned int irq, struct
 void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
 {
 	if (suspend) {
-		if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND))
+		if (!desc->action || desc->skip_suspend)
 			return;
 		desc->istate |= IRQS_SUSPENDED;
 	}

@@ -658,6 +658,44 @@ int irq_set_parent(int irq, int parent_i
 }
 #endif
 
+bool irqs_suspended __read_mostly;
+
+void set_irqs_suspended(bool on)
+{
+	struct irq_desc *desc;
+	int irq;
+
+	irqs_suspended = on;
+	for_each_irq_desc(irq, desc)
+		synchronize_irq(irq);
+}
+
+/*
+ * Wrapper handler for shared interrupts.
+ */
+static irqreturn_t irq_shared_wrapper_handler(int irq, void *dev_id)
+{
+	struct irqaction *action;
+
+	if (unlikely(irqs_suspended))
+		return IRQ_NONE;
+
+	action = dev_id;
+	return action->s_handler(irq, action->s_dev_id);
+}
+
+static void irq_shared_wrap_handler(struct irqaction *action)
+{
+	if (action->handler == irq_shared_wrapper_handler ||
+	    (action->flags & IRQF_NO_SUSPEND))
+		return;
+
+	action->s_handler = action->handler;
+	action->handler = irq_shared_wrapper_handler;
+	action->s_dev_id = action->dev_id;
+	action->dev_id = action;
+}
+
 /*
  * Default primary interrupt handler for threaded interrupts. Is
  * assigned as primary handler when request_threaded_irq is called

@@ -1088,6 +1126,7 @@ __setup_irq(unsigned int irq, struct irq
 
 		/* add new interrupt at end of irq queue */
 		do {
+			irq_shared_wrap_handler(old);
 			/*
 			 * Or all existing action->thread_mask bits,
 			 * so we can find the next zero bit for this

@@ -1097,6 +1136,7 @@ __setup_irq(unsigned int irq, struct irq
 			old_ptr = &old->next;
 			old = *old_ptr;
 		} while (old);
+		irq_shared_wrap_handler(new);
 		shared = 1;
 	}
 

@@ -1222,6 +1262,9 @@ __setup_irq(unsigned int irq, struct irq
 	desc->irq_count = 0;
 	desc->irqs_unhandled = 0;
 
+	if (new->flags & IRQF_NO_SUSPEND)
+		desc->skip_suspend++;
+
 	/*
 	 * Check whether we disabled the irq via the spurious handler
 	 * before. Reenable it and give it another chance.

@@ -1328,13 +1371,19 @@ static struct irqaction *__free_irq(unsi
 			return NULL;
 		}
 
-		if (action->dev_id == dev_id)
+		if (action->dev_id == dev_id || action->s_dev_id == dev_id)
 			break;
 		action_ptr = &action->next;
 	}
 
 	/* Found it - now remove it from the list of entries: */
 	*action_ptr = action->next;
+	if (action->flags & IRQF_NO_SUSPEND) {
+		desc->skip_suspend--;
+	} else if (action->handler == irq_shared_wrapper_handler) {
+		action->handler = action->s_handler;
+		action->dev_id = action->s_dev_id;
+	}
 
 	/* If this was the last handler, shut down the IRQ line: */
 	if (!desc->action) {

@@ -90,8 +90,10 @@ typedef irqreturn_t (*irq_handler_t)(int
 /**
  * struct irqaction - per interrupt action descriptor
  * @handler:	interrupt handler function
+ * @s_handler:	interrupt handler function for shared interrupts
  * @name:	name of the device
  * @dev_id:	cookie to identify the device
+ * @s_dev_id:	cookie to identify the device for shared interrupts
  * @percpu_dev_id:	cookie to identify the device
  * @next:	pointer to the next irqaction for shared interrupts
  * @irq:	interrupt number

@@ -105,6 +107,8 @@ typedef irqreturn_t (*irq_handler_t)(int
 struct irqaction {
 	irq_handler_t		handler;
 	void			*dev_id;
+	irq_handler_t		s_handler;
+	void			*s_dev_id;
 	void __percpu		*percpu_dev_id;
 	struct irqaction	*next;
 	irq_handler_t		thread_fn;

@@ -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"
 

@@ -275,6 +276,18 @@ try_misrouted_irq(unsigned int irq, stru
 void note_interrupt(unsigned int irq, struct irq_desc *desc,
 		    irqreturn_t action_ret)
 {
+	if (unlikely(irqs_suspended && action_ret == IRQ_NONE)) {
+		pr_err_ratelimited("IRQ %d: Unhandled while suspended\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;

@@ -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"
 

@@ -33,10 +34,7 @@ void suspend_device_irqs(void)
 		__disable_irq(desc, irq, true);
 		raw_spin_unlock_irqrestore(&desc->lock, flags);
 	}
-
-	for_each_irq_desc(irq, desc)
-		if (desc->istate & IRQS_SUSPENDED)
-			synchronize_irq(irq);
+	set_irqs_suspended(true);
 }
 EXPORT_SYMBOL_GPL(suspend_device_irqs);
 

@@ -90,6 +88,7 @@ device_initcall(irq_pm_init_ops);
  */
 void resume_device_irqs(void)
 {
+	set_irqs_suspended(false);
 	resume_irqs(false);
 }
 EXPORT_SYMBOL_GPL(resume_device_irqs);

@@ -102,6 +101,9 @@ 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

@@ -17,6 +17,9 @@
 #define istate core_internal_state__do_not_mess_with_it
 
 extern bool noirqdebug;
+extern bool irqs_suspended;
+
+extern void set_irqs_suspended(bool on);
 
 /*
  * Bits used by threaded handlers:

@@ -51,6 +51,7 @@ struct irq_desc {
 	unsigned int		core_internal_state__do_not_mess_with_it;
 	unsigned int		depth;		/* nested irq disables */
 	unsigned int		wake_depth;	/* nested wake enables */
+	unsigned int		skip_suspend;
 	unsigned int		irq_count;	/* For detecting broken IRQs */
 	unsigned long		last_unhandled;	/* Aging timer for unhandled count */
 	unsigned int		irqs_unhandled;