Linux-libre 4.3.2-gnu

12 files changed, 149 insertions, 123 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index ae216824e..e28169dd1 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -63,7 +63,7 @@ int irq_set_irq_type(unsigned int irq, unsigned int type)
 		return -EINVAL;
 
 	type &= IRQ_TYPE_SENSE_MASK;
-	ret = __irq_set_trigger(desc, irq, type);
+	ret = __irq_set_trigger(desc, type);
 	irq_put_desc_busunlock(desc, flags);
 	return ret;
 }
@@ -83,7 +83,7 @@ int irq_set_handler_data(unsigned int irq, void *data)
 
 	if (!desc)
 		return -EINVAL;
-	desc->irq_data.handler_data = data;
+	desc->irq_common_data.handler_data = data;
 	irq_put_desc_unlock(desc, flags);
 	return 0;
 }
@@ -105,7 +105,7 @@ int irq_set_msi_desc_off(unsigned int irq_base, unsigned int irq_offset,
 
 	if (!desc)
 		return -EINVAL;
-	desc->irq_data.msi_desc = entry;
+	desc->irq_common_data.msi_desc = entry;
 	if (entry && !irq_offset)
 		entry->irq = irq_base;
 	irq_put_desc_unlock(desc, flags);
@@ -187,7 +187,7 @@ int irq_startup(struct irq_desc *desc, bool resend)
 		irq_enable(desc);
 	}
 	if (resend)
-		check_irq_resend(desc, desc->irq_data.irq);
+		check_irq_resend(desc);
 	return ret;
 }
 
@@ -315,7 +315,7 @@ void handle_nested_irq(unsigned int irq)
 	raw_spin_lock_irq(&desc->lock);
 
 	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	action = desc->action;
 	if (unlikely(!action || irqd_irq_disabled(&desc->irq_data))) {
@@ -328,7 +328,7 @@ void handle_nested_irq(unsigned int irq)
 
 	action_ret = action->thread_fn(action->irq, action->dev_id);
 	if (!noirqdebug)
-		note_interrupt(irq, desc, action_ret);
+		note_interrupt(desc, action_ret);
 
 	raw_spin_lock_irq(&desc->lock);
 	irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
@@ -372,7 +372,6 @@ static bool irq_may_run(struct irq_desc *desc)
 
 /**
  *	handle_simple_irq - Simple and software-decoded IRQs.
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  *	Simple interrupts are either sent from a demultiplexing interrupt
@@ -382,8 +381,7 @@ static bool irq_may_run(struct irq_desc *desc)
  *	Note: The caller is expected to handle the ack, clear, mask and
  *	unmask issues if necessary.
  */
-void
-handle_simple_irq(unsigned int irq, struct irq_desc *desc)
+void handle_simple_irq(struct irq_desc *desc)
 {
 	raw_spin_lock(&desc->lock);
 
@@ -391,7 +389,7 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
 		goto out_unlock;
 
 	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) {
 		desc->istate |= IRQS_PENDING;
@@ -425,7 +423,6 @@ static void cond_unmask_irq(struct irq_desc *desc)
 
 /**
  *	handle_level_irq - Level type irq handler
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  *	Level type interrupts are active as long as the hardware line has
@@ -433,8 +430,7 @@ static void cond_unmask_irq(struct irq_desc *desc)
  *	it after the associated handler has acknowledged the device, so the
  *	interrupt line is back to inactive.
  */
-void
-handle_level_irq(unsigned int irq, struct irq_desc *desc)
+void handle_level_irq(struct irq_desc *desc)
 {
 	raw_spin_lock(&desc->lock);
 	mask_ack_irq(desc);
@@ -443,7 +439,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
 		goto out_unlock;
 
 	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	/*
 	 * If its disabled or no action available
@@ -496,7 +492,6 @@ static void cond_unmask_eoi_irq(struct irq_desc *desc, struct irq_chip *chip)
 
 /**
  *	handle_fasteoi_irq - irq handler for transparent controllers
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  *	Only a single callback will be issued to the chip: an ->eoi()
@@ -504,8 +499,7 @@ static void cond_unmask_eoi_irq(struct irq_desc *desc, struct irq_chip *chip)
  *	for modern forms of interrupt handlers, which handle the flow
  *	details in hardware, transparently.
  */
-void
-handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
+void handle_fasteoi_irq(struct irq_desc *desc)
 {
 	struct irq_chip *chip = desc->irq_data.chip;
 
@@ -515,7 +509,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
 		goto out;
 
 	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	/*
 	 * If its disabled or no action available
@@ -546,7 +540,6 @@ EXPORT_SYMBOL_GPL(handle_fasteoi_irq);
 
 /**
  *	handle_edge_irq - edge type IRQ handler
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  *	Interrupt occures on the falling and/or rising edge of a hardware
@@ -560,8 +553,7 @@ EXPORT_SYMBOL_GPL(handle_fasteoi_irq);
  *	the handler was running. If all pending interrupts are handled, the
  *	loop is left.
  */
-void
-handle_edge_irq(unsigned int irq, struct irq_desc *desc)
+void handle_edge_irq(struct irq_desc *desc)
 {
 	raw_spin_lock(&desc->lock);
 
@@ -583,7 +575,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
 		goto out_unlock;
 	}
 
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	/* Start handling the irq */
 	desc->irq_data.chip->irq_ack(&desc->irq_data);
@@ -618,13 +610,12 @@ EXPORT_SYMBOL(handle_edge_irq);
 #ifdef CONFIG_IRQ_EDGE_EOI_HANDLER
 /**
  *	handle_edge_eoi_irq - edge eoi type IRQ handler
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  * Similar as the above handle_edge_irq, but using eoi and w/o the
  * mask/unmask logic.
  */
-void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc)
+void handle_edge_eoi_irq(struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 
@@ -646,7 +637,7 @@ void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc)
 		goto out_eoi;
 	}
 
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	do {
 		if (unlikely(!desc->action))
@@ -665,17 +656,15 @@ out_eoi:
 
 /**
  *	handle_percpu_irq - Per CPU local irq handler
- *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
  *	Per CPU interrupts on SMP machines without locking requirements
  */
-void
-handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
+void handle_percpu_irq(struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	if (chip->irq_ack)
 		chip->irq_ack(&desc->irq_data);
@@ -688,7 +677,6 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
 
 /**
  * handle_percpu_devid_irq - Per CPU local irq handler with per cpu dev ids
- * @irq:	the interrupt number
  * @desc:	the interrupt description structure for this irq
  *
  * Per CPU interrupts on SMP machines without locking requirements. Same as
@@ -698,14 +686,15 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
  * contain the real device id for the cpu on which this handler is
  * called
  */
-void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc)
+void handle_percpu_devid_irq(struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct irqaction *action = desc->action;
 	void *dev_id = raw_cpu_ptr(action->percpu_dev_id);
+	unsigned int irq = irq_desc_get_irq(desc);
 	irqreturn_t res;
 
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 
 	if (chip->irq_ack)
 		chip->irq_ack(&desc->irq_data);
@@ -796,7 +785,7 @@ irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle,
 		return;
 
 	__irq_do_set_handler(desc, handle, 1, NULL);
-	desc->irq_data.handler_data = data;
+	desc->irq_common_data.handler_data = data;
 
 	irq_put_desc_busunlock(desc, flags);
 }
@@ -1020,7 +1009,7 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data)
 /**
  * irq_chip_set_vcpu_affinity_parent - Set vcpu affinity on the parent interrupt
  * @data:	Pointer to interrupt specific data
- * @dest:	The vcpu affinity information
+ * @vcpu_info:	The vcpu affinity information
  */
 int irq_chip_set_vcpu_affinity_parent(struct irq_data *data, void *vcpu_info)
 {
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index 15b370daf..abd286afb 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -553,6 +553,9 @@ static int irq_gc_suspend(void)
 			if (data)
 				ct->chip.irq_suspend(data);
 		}
+
+		if (gc->suspend)
+			gc->suspend(gc);
 	}
 	return 0;
 }
@@ -564,6 +567,9 @@ static void irq_gc_resume(void)
 	list_for_each_entry(gc, &gc_list, list) {
 		struct irq_chip_type *ct = gc->chip_types;
 
+		if (gc->resume)
+			gc->resume(gc);
+
 		if (ct->chip.irq_resume) {
 			struct irq_data *data = irq_gc_get_irq_data(gc);
 
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 635480270..e25a83b67 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -22,17 +22,19 @@
 
 /**
  * handle_bad_irq - handle spurious and unhandled irqs
- * @irq:       the interrupt number
  * @desc:      description of the interrupt
  *
  * Handles spurious and unhandled IRQ's. It also prints a debugmessage.
  */
-void handle_bad_irq(unsigned int irq, struct irq_desc *desc)
+void handle_bad_irq(struct irq_desc *desc)
 {
+	unsigned int irq = irq_desc_get_irq(desc);
+
 	print_irq_desc(irq, desc);
-	kstat_incr_irqs_this_cpu(irq, desc);
+	kstat_incr_irqs_this_cpu(desc);
 	ack_bad_irq(irq);
 }
+EXPORT_SYMBOL_GPL(handle_bad_irq);
 
 /*
  * Special, empty irq handler:
@@ -176,7 +178,7 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
 	add_interrupt_randomness(irq, flags);
 
 	if (!noirqdebug)
-		note_interrupt(irq, desc, retval);
+		note_interrupt(desc, retval);
 	return retval;
 }
 
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 61008b843..5ef0c2dbe 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -59,10 +59,9 @@ enum {
 #include "debug.h"
 #include "settings.h"
 
-extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
-		unsigned long flags);
-extern void __disable_irq(struct irq_desc *desc, unsigned int irq);
-extern void __enable_irq(struct irq_desc *desc, unsigned int irq);
+extern int __irq_set_trigger(struct irq_desc *desc, unsigned long flags);
+extern void __disable_irq(struct irq_desc *desc);
+extern void __enable_irq(struct irq_desc *desc);
 
 extern int irq_startup(struct irq_desc *desc, bool resend);
 extern void irq_shutdown(struct irq_desc *desc);
@@ -86,7 +85,7 @@ irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *act
 irqreturn_t handle_irq_event(struct irq_desc *desc);
 
 /* Resending of interrupts :*/
-void check_irq_resend(struct irq_desc *desc, unsigned int irq);
+void check_irq_resend(struct irq_desc *desc);
 bool irq_wait_for_poll(struct irq_desc *desc);
 void __irq_wake_thread(struct irq_desc *desc, struct irqaction *action);
 
@@ -187,7 +186,7 @@ static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
 	return __irqd_to_state(d) & mask;
 }
 
-static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *desc)
+static inline void kstat_incr_irqs_this_cpu(struct irq_desc *desc)
 {
 	__this_cpu_inc(*desc->kstat_irqs);
 	__this_cpu_inc(kstat.irqs_sum);
@@ -195,7 +194,7 @@ static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *d
 
 static inline int irq_desc_get_node(struct irq_desc *desc)
 {
-	return irq_data_get_node(&desc->irq_data);
+	return irq_common_data_get_node(&desc->irq_common_data);
 }
 
 #ifdef CONFIG_PM_SLEEP
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 4afc45761..239e2ae2c 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -38,12 +38,13 @@ static void __init init_irq_default_affinity(void)
 #ifdef CONFIG_SMP
 static int alloc_masks(struct irq_desc *desc, gfp_t gfp, int node)
 {
-	if (!zalloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node))
+	if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity,
+				     gfp, node))
 		return -ENOMEM;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (!zalloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
-		free_cpumask_var(desc->irq_data.affinity);
+		free_cpumask_var(desc->irq_common_data.affinity);
 		return -ENOMEM;
 	}
 #endif
@@ -52,11 +53,13 @@ static int alloc_masks(struct irq_desc *desc, gfp_t gfp, int node)
 
 static void desc_smp_init(struct irq_desc *desc, int node)
 {
-	desc->irq_data.node = node;
-	cpumask_copy(desc->irq_data.affinity, irq_default_affinity);
+	cpumask_copy(desc->irq_common_data.affinity, irq_default_affinity);
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_clear(desc->pending_mask);
 #endif
+#ifdef CONFIG_NUMA
+	desc->irq_common_data.node = node;
+#endif
 }
 
 #else
@@ -70,12 +73,13 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
 {
 	int cpu;
 
+	desc->irq_common_data.handler_data = NULL;
+	desc->irq_common_data.msi_desc = NULL;
+
 	desc->irq_data.common = &desc->irq_common_data;
 	desc->irq_data.irq = irq;
 	desc->irq_data.chip = &no_irq_chip;
 	desc->irq_data.chip_data = NULL;
-	desc->irq_data.handler_data = NULL;
-	desc->irq_data.msi_desc = NULL;
 	irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS);
 	irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
 	desc->handle_irq = handle_bad_irq;
@@ -121,7 +125,7 @@ static void free_masks(struct irq_desc *desc)
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	free_cpumask_var(desc->pending_mask);
 #endif
-	free_cpumask_var(desc->irq_data.affinity);
+	free_cpumask_var(desc->irq_common_data.affinity);
 }
 #else
 static inline void free_masks(struct irq_desc *desc) { }
@@ -343,7 +347,7 @@ int generic_handle_irq(unsigned int irq)
 
 	if (!desc)
 		return -EINVAL;
-	generic_handle_irq_desc(irq, desc);
+	generic_handle_irq_desc(desc);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(generic_handle_irq);
@@ -582,7 +586,7 @@ int irq_set_percpu_devid(unsigned int irq)
 
 void kstat_incr_irq_this_cpu(unsigned int irq)
 {
-	kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
+	kstat_incr_irqs_this_cpu(irq_to_desc(irq));
 }
 
 /**
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 8c3577fef..dc9d27c0c 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -187,10 +187,12 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
 
 /**
- * irq_find_host() - Locates a domain for a given device node
+ * irq_find_matching_host() - Locates a domain for a given device node
  * @node: device-tree node of the interrupt controller
+ * @bus_token: domain-specific data
  */
-struct irq_domain *irq_find_host(struct device_node *node)
+struct irq_domain *irq_find_matching_host(struct device_node *node,
+					  enum irq_domain_bus_token bus_token)
 {
 	struct irq_domain *h, *found = NULL;
 	int rc;
@@ -199,13 +201,19 @@ struct irq_domain *irq_find_host(struct device_node *node)
 	 * it might potentially be set to match all interrupts in
 	 * the absence of a device node. This isn't a problem so far
 	 * yet though...
+	 *
+	 * bus_token == DOMAIN_BUS_ANY matches any domain, any other
+	 * values must generate an exact match for the domain to be
+	 * selected.
 	 */
 	mutex_lock(&irq_domain_mutex);
 	list_for_each_entry(h, &irq_domain_list, link) {
 		if (h->ops->match)
-			rc = h->ops->match(h, node);
+			rc = h->ops->match(h, node, bus_token);
 		else
-			rc = (h->of_node != NULL) && (h->of_node == node);
+			rc = ((h->of_node != NULL) && (h->of_node == node) &&
+			      ((bus_token == DOMAIN_BUS_ANY) ||
+			       (h->bus_token == bus_token)));
 
 		if (rc) {
 			found = h;
@@ -215,7 +223,7 @@ struct irq_domain *irq_find_host(struct device_node *node)
 	mutex_unlock(&irq_domain_mutex);
 	return found;
 }
-EXPORT_SYMBOL_GPL(irq_find_host);
+EXPORT_SYMBOL_GPL(irq_find_matching_host);
 
 /**
  * irq_set_default_host() - Set a "default" irq domain
@@ -836,7 +844,6 @@ static struct irq_data *irq_domain_insert_irq_data(struct irq_domain *domain,
 		child->parent_data = irq_data;
 		irq_data->irq = child->irq;
 		irq_data->common = child->common;
-		irq_data->node = child->node;
 		irq_data->domain = domain;
 	}
 
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index f9744853b..f9a59f6ca 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -115,6 +115,14 @@ EXPORT_SYMBOL(synchronize_irq);
 #ifdef CONFIG_SMP
 cpumask_var_t irq_default_affinity;
 
+static int __irq_can_set_affinity(struct irq_desc *desc)
+{
+	if (!desc || !irqd_can_balance(&desc->irq_data) ||
+	    !desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity)
+		return 0;
+	return 1;
+}
+
 /**
  *	irq_can_set_affinity - Check if the affinity of a given irq can be set
  *	@irq:		Interrupt to check
@@ -122,13 +130,7 @@ cpumask_var_t irq_default_affinity;
  */
 int irq_can_set_affinity(unsigned int irq)
 {
-	struct irq_desc *desc = irq_to_desc(irq);
-
-	if (!desc || !irqd_can_balance(&desc->irq_data) ||
-	    !desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity)
-		return 0;
-
-	return 1;
+	return __irq_can_set_affinity(irq_to_desc(irq));
 }
 
 /**
@@ -190,7 +192,7 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask,
 	switch (ret) {
 	case IRQ_SET_MASK_OK:
 	case IRQ_SET_MASK_OK_DONE:
-		cpumask_copy(data->affinity, mask);
+		cpumask_copy(desc->irq_common_data.affinity, mask);
 	case IRQ_SET_MASK_OK_NOCOPY:
 		irq_set_thread_affinity(desc);
 		ret = 0;
@@ -302,7 +304,7 @@ static void irq_affinity_notify(struct work_struct *work)
 	if (irq_move_pending(&desc->irq_data))
 		irq_get_pending(cpumask, desc);
 	else
-		cpumask_copy(cpumask, desc->irq_data.affinity);
+		cpumask_copy(cpumask, desc->irq_common_data.affinity);
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	notify->notify(notify, cpumask);
@@ -359,14 +361,13 @@ EXPORT_SYMBOL_GPL(irq_set_affinity_notifier);
 /*
  * Generic version of the affinity autoselector.
  */
-static int
-setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
+static int setup_affinity(struct irq_desc *desc, struct cpumask *mask)
 {
 	struct cpumask *set = irq_default_affinity;
 	int node = irq_desc_get_node(desc);
 
 	/* Excludes PER_CPU and NO_BALANCE interrupts */
-	if (!irq_can_set_affinity(irq))
+	if (!__irq_can_set_affinity(desc))
 		return 0;
 
 	/*
@@ -374,9 +375,9 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
 	 * one of the targets is online.
 	 */
 	if (irqd_has_set(&desc->irq_data, IRQD_AFFINITY_SET)) {
-		if (cpumask_intersects(desc->irq_data.affinity,
+		if (cpumask_intersects(desc->irq_common_data.affinity,
 				       cpu_online_mask))
-			set = desc->irq_data.affinity;
+			set = desc->irq_common_data.affinity;
 		else
 			irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET);
 	}
@@ -393,10 +394,10 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
 	return 0;
 }
 #else
-static inline int
-setup_affinity(unsigned int irq, struct irq_desc *d, struct cpumask *mask)
+/* Wrapper for ALPHA specific affinity selector magic */
+static inline int setup_affinity(struct irq_desc *d, struct cpumask *mask)
 {
-	return irq_select_affinity(irq);
+	return irq_select_affinity(irq_desc_get_irq(d));
 }
 #endif
 
@@ -410,20 +411,20 @@ int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask)
 	int ret;
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
-	ret = setup_affinity(irq, desc, mask);
+	ret = setup_affinity(desc, mask);
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return ret;
 }
 
 #else
 static inline int
-setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
+setup_affinity(struct irq_desc *desc, struct cpumask *mask)
 {
 	return 0;
 }
 #endif
 
-void __disable_irq(struct irq_desc *desc, unsigned int irq)
+void __disable_irq(struct irq_desc *desc)
 {
 	if (!desc->depth++)
 		irq_disable(desc);
@@ -436,7 +437,7 @@ static int __disable_irq_nosync(unsigned int irq)
 
 	if (!desc)
 		return -EINVAL;
-	__disable_irq(desc, irq);
+	__disable_irq(desc);
 	irq_put_desc_busunlock(desc, flags);
 	return 0;
 }
@@ -503,12 +504,13 @@ bool disable_hardirq(unsigned int irq)
 }
 EXPORT_SYMBOL_GPL(disable_hardirq);
 
-void __enable_irq(struct irq_desc *desc, unsigned int irq)
+void __enable_irq(struct irq_desc *desc)
 {
 	switch (desc->depth) {
 	case 0:
  err_out:
-		WARN(1, KERN_WARNING "Unbalanced enable for IRQ %d\n", irq);
+		WARN(1, KERN_WARNING "Unbalanced enable for IRQ %d\n",
+		     irq_desc_get_irq(desc));
 		break;
 	case 1: {
 		if (desc->istate & IRQS_SUSPENDED)
@@ -516,7 +518,7 @@ void __enable_irq(struct irq_desc *desc, unsigned int irq)
 		/* Prevent probing on this irq: */
 		irq_settings_set_noprobe(desc);
 		irq_enable(desc);
-		check_irq_resend(desc, irq);
+		check_irq_resend(desc);
 		/* fall-through */
 	}
 	default:
@@ -546,7 +548,7 @@ void enable_irq(unsigned int irq)
 		 KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))
 		goto out;
 
-	__enable_irq(desc, irq);
+	__enable_irq(desc);
 out:
 	irq_put_desc_busunlock(desc, flags);
 }
@@ -637,8 +639,7 @@ int can_request_irq(unsigned int irq, unsigned long irqflags)
 	return canrequest;
 }
 
-int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
-		      unsigned long flags)
+int __irq_set_trigger(struct irq_desc *desc, unsigned long flags)
 {
 	struct irq_chip *chip = desc->irq_data.chip;
 	int ret, unmask = 0;
@@ -648,7 +649,8 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
 		 * IRQF_TRIGGER_* but the PIC does not support multiple
 		 * flow-types?
 		 */
-		pr_debug("No set_type function for IRQ %d (%s)\n", irq,
+		pr_debug("No set_type function for IRQ %d (%s)\n",
+			 irq_desc_get_irq(desc),
 			 chip ? (chip->name ? : "unknown") : "unknown");
 		return 0;
 	}
@@ -685,7 +687,7 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
 		break;
 	default:
 		pr_err("Setting trigger mode %lu for irq %u failed (%pF)\n",
-		       flags, irq, chip->irq_set_type);
+		       flags, irq_desc_get_irq(desc), chip->irq_set_type);
 	}
 	if (unmask)
 		unmask_irq(desc);
@@ -827,8 +829,8 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action)
 	 * This code is triggered unconditionally. Check the affinity
 	 * mask pointer. For CPU_MASK_OFFSTACK=n this is optimized out.
 	 */
-	if (desc->irq_data.affinity)
-		cpumask_copy(mask, desc->irq_data.affinity);
+	if (desc->irq_common_data.affinity)
+		cpumask_copy(mask, desc->irq_common_data.affinity);
 	else
 		valid = false;
 	raw_spin_unlock_irq(&desc->lock);
@@ -1221,8 +1223,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 
 		/* Setup the type (level, edge polarity) if configured: */
 		if (new->flags & IRQF_TRIGGER_MASK) {
-			ret = __irq_set_trigger(desc, irq,
-					new->flags & IRQF_TRIGGER_MASK);
+			ret = __irq_set_trigger(desc,
+						new->flags & IRQF_TRIGGER_MASK);
 
 			if (ret)
 				goto out_mask;
@@ -1253,7 +1255,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 		}
 
 		/* Set default affinity mask once everything is setup */
-		setup_affinity(irq, desc, mask);
+		setup_affinity(desc, mask);
 
 	} else if (new->flags & IRQF_TRIGGER_MASK) {
 		unsigned int nmsk = new->flags & IRQF_TRIGGER_MASK;
@@ -1280,7 +1282,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 	 */
 	if (shared && (desc->istate & IRQS_SPURIOUS_DISABLED)) {
 		desc->istate &= ~IRQS_SPURIOUS_DISABLED;
-		__enable_irq(desc, irq);
+		__enable_irq(desc);
 	}
 
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
@@ -1650,7 +1652,7 @@ void enable_percpu_irq(unsigned int irq, unsigned int type)
 	if (type != IRQ_TYPE_NONE) {
 		int ret;
 
-		ret = __irq_set_trigger(desc, irq, type);
+		ret = __irq_set_trigger(desc, type);
 
 		if (ret) {
 			WARN(1, "failed to set type for IRQ%d\n", irq);
@@ -1875,6 +1877,7 @@ int irq_get_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
 	irq_put_desc_busunlock(desc, flags);
 	return err;
 }
+EXPORT_SYMBOL_GPL(irq_get_irqchip_state);
 
 /**
  *	irq_set_irqchip_state - set the state of a forwarded interrupt.
@@ -1920,3 +1923,4 @@ int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
 	irq_put_desc_busunlock(desc, flags);
 	return err;
 }
+EXPORT_SYMBOL_GPL(irq_set_irqchip_state);
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 7bf1f1bbb..be9149f62 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -18,6 +18,23 @@
 /* Temparory solution for building, will be removed later */
 #include <linux/pci.h>
 
+struct msi_desc *alloc_msi_entry(struct device *dev)
+{
+	struct msi_desc *desc = kzalloc(sizeof(*desc), GFP_KERNEL);
+	if (!desc)
+		return NULL;
+
+	INIT_LIST_HEAD(&desc->list);
+	desc->dev = dev;
+
+	return desc;
+}
+
+void free_msi_entry(struct msi_desc *entry)
+{
+	kfree(entry);
+}
+
 void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
 {
 	*msg = entry->msg;
@@ -211,11 +228,7 @@ static void msi_domain_update_chip_ops(struct msi_domain_info *info)
 {
 	struct irq_chip *chip = info->chip;
 
-	BUG_ON(!chip);
-	if (!chip->irq_mask)
-		chip->irq_mask = pci_msi_mask_irq;
-	if (!chip->irq_unmask)
-		chip->irq_unmask = pci_msi_unmask_irq;
+	BUG_ON(!chip || !chip->irq_mask || !chip->irq_unmask);
 	if (!chip->irq_set_affinity)
 		chip->irq_set_affinity = msi_domain_set_affinity;
 }
diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index d22786a6d..21c62617a 100644
--- a/kernel/irq/pm.c
+++ b/kernel/irq/pm.c
@@ -68,7 +68,7 @@ void irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action)
 		desc->cond_suspend_depth--;
 }
 
-static bool suspend_device_irq(struct irq_desc *desc, int irq)
+static bool suspend_device_irq(struct irq_desc *desc)
 {
 	if (!desc->action || desc->no_suspend_depth)
 		return false;
@@ -85,7 +85,7 @@ static bool suspend_device_irq(struct irq_desc *desc, int irq)
 	}
 
 	desc->istate |= IRQS_SUSPENDED;
-	__disable_irq(desc, irq);
+	__disable_irq(desc);
 
 	/*
 	 * Hardware which has no wakeup source configuration facility
@@ -126,7 +126,7 @@ void suspend_device_irqs(void)
 		if (irq_settings_is_nested_thread(desc))
 			continue;
 		raw_spin_lock_irqsave(&desc->lock, flags);
-		sync = suspend_device_irq(desc, irq);
+		sync = suspend_device_irq(desc);
 		raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 		if (sync)
@@ -135,7 +135,7 @@ void suspend_device_irqs(void)
 }
 EXPORT_SYMBOL_GPL(suspend_device_irqs);
 
-static void resume_irq(struct irq_desc *desc, int irq)
+static void resume_irq(struct irq_desc *desc)
 {
 	irqd_clear(&desc->irq_data, IRQD_WAKEUP_ARMED);
 
@@ -150,7 +150,7 @@ static void resume_irq(struct irq_desc *desc, int irq)
 	desc->depth++;
 resume:
 	desc->istate &= ~IRQS_SUSPENDED;
-	__enable_irq(desc, irq);
+	__enable_irq(desc);
 }
 
 static void resume_irqs(bool want_early)
@@ -169,7 +169,7 @@ static void resume_irqs(bool want_early)
 			continue;
 
 		raw_spin_lock_irqsave(&desc->lock, flags);
-		resume_irq(desc, irq);
+		resume_irq(desc);
 		raw_spin_unlock_irqrestore(&desc->lock, flags);
 	}
 }
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 4e6267a34..a50ddc941 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -40,7 +40,7 @@ static struct proc_dir_entry *root_irq_dir;
 static int show_irq_affinity(int type, struct seq_file *m, void *v)
 {
 	struct irq_desc *desc = irq_to_desc((long)m->private);
-	const struct cpumask *mask = desc->irq_data.affinity;
+	const struct cpumask *mask = desc->irq_common_data.affinity;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (irqd_is_setaffinity_pending(&desc->irq_data))
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index 7a5237a1b..b86886bee 100644
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -38,7 +38,7 @@ static void resend_irqs(unsigned long arg)
 		clear_bit(irq, irqs_resend);
 		desc = irq_to_desc(irq);
 		local_irq_disable();
-		desc->handle_irq(irq, desc);
+		desc->handle_irq(desc);
 		local_irq_enable();
 	}
 }
@@ -53,7 +53,7 @@ static DECLARE_TASKLET(resend_tasklet, resend_irqs, 0);
  *
  * Is called with interrupts disabled and desc->lock held.
  */
-void check_irq_resend(struct irq_desc *desc, unsigned int irq)
+void check_irq_resend(struct irq_desc *desc)
 {
 	/*
 	 * We do not resend level type interrupts. Level type
@@ -74,6 +74,8 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq)
 		if (!desc->irq_data.chip->irq_retrigger ||
 		    !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) {
 #ifdef CONFIG_HARDIRQS_SW_RESEND
+			unsigned int irq = irq_desc_get_irq(desc);
+
 			/*
 			 * If the interrupt is running in the thread
 			 * context of the parent irq we need to be
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index e2514b0e4..321441754 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -60,7 +60,7 @@ bool irq_wait_for_poll(struct irq_desc *desc)
 /*
  * Recovery handler for misrouted interrupts.
  */
-static int try_one_irq(int irq, struct irq_desc *desc, bool force)
+static int try_one_irq(struct irq_desc *desc, bool force)
 {
 	irqreturn_t ret = IRQ_NONE;
 	struct irqaction *action;
@@ -133,7 +133,7 @@ static int misrouted_irq(int irq)
 		if (i == irq)	/* Already tried */
 			continue;
 
-		if (try_one_irq(i, desc, false))
+		if (try_one_irq(desc, false))
 			ok = 1;
 	}
 out:
@@ -164,7 +164,7 @@ static void poll_spurious_irqs(unsigned long dummy)
 			continue;
 
 		local_irq_disable();
-		try_one_irq(i, desc, true);
+		try_one_irq(desc, true);
 		local_irq_enable();
 	}
 out:
@@ -188,10 +188,9 @@ static inline int bad_action_ret(irqreturn_t action_ret)
  * (The other 100-of-100,000 interrupts may have been a correctly
  *  functioning device sharing an IRQ with the failing one)
  */
-static void
-__report_bad_irq(unsigned int irq, struct irq_desc *desc,
-		 irqreturn_t action_ret)
+static void __report_bad_irq(struct irq_desc *desc, irqreturn_t action_ret)
 {
+	unsigned int irq = irq_desc_get_irq(desc);
 	struct irqaction *action;
 	unsigned long flags;
 
@@ -224,14 +223,13 @@ __report_bad_irq(unsigned int irq, struct irq_desc *desc,
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 }
 
-static void
-report_bad_irq(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret)
+static void report_bad_irq(struct irq_desc *desc, irqreturn_t action_ret)
 {
 	static int count = 100;
 
 	if (count > 0) {
 		count--;
-		__report_bad_irq(irq, desc, action_ret);
+		__report_bad_irq(desc, action_ret);
 	}
 }
 
@@ -272,15 +270,16 @@ try_misrouted_irq(unsigned int irq, struct irq_desc *desc,
 
 #define SPURIOUS_DEFERRED	0x80000000
 
-void note_interrupt(unsigned int irq, struct irq_desc *desc,
-		    irqreturn_t action_ret)
+void note_interrupt(struct irq_desc *desc, irqreturn_t action_ret)
 {
+	unsigned int irq;
+
 	if (desc->istate & IRQS_POLL_INPROGRESS ||
 	    irq_settings_is_polled(desc))
 		return;
 
 	if (bad_action_ret(action_ret)) {
-		report_bad_irq(irq, desc, action_ret);
+		report_bad_irq(desc, action_ret);
 		return;
 	}
 
@@ -398,6 +397,7 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
 		desc->last_unhandled = jiffies;
 	}
 
+	irq = irq_desc_get_irq(desc);
 	if (unlikely(try_misrouted_irq(irq, desc, action_ret))) {
 		int ok = misrouted_irq(irq);
 		if (action_ret == IRQ_NONE)
@@ -413,7 +413,7 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
 		/*
 		 * The interrupt is stuck
 		 */
-		__report_bad_irq(irq, desc, action_ret);
+		__report_bad_irq(desc, action_ret);
 		/*
 		 * Now kill the IRQ
 		 */