diff --git a/include/linux/irq.h b/include/linux/irq.h
index 363c76f..002351d 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -475,12 +475,12 @@
 		gfp = GFP_NOWAIT;
 
 #ifdef CONFIG_CPUMASK_OFFSTACK
-	if (!alloc_cpumask_var_node(&desc->affinity, gfp, node))
+	if (!alloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node))
 		return false;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
-		free_cpumask_var(desc->affinity);
+		free_cpumask_var(desc->irq_data.affinity);
 		return false;
 	}
 #endif
@@ -490,7 +490,7 @@
 
 static inline void init_desc_masks(struct irq_desc *desc)
 {
-	cpumask_setall(desc->affinity);
+	cpumask_setall(desc->irq_data.affinity);
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_clear(desc->pending_mask);
 #endif
@@ -510,7 +510,7 @@
 					struct irq_desc *new_desc)
 {
 #ifdef CONFIG_CPUMASK_OFFSTACK
-	cpumask_copy(new_desc->affinity, old_desc->affinity);
+	cpumask_copy(new_desc->irq_data.affinity, old_desc->irq_data.affinity);
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_copy(new_desc->pending_mask, old_desc->pending_mask);
@@ -521,7 +521,7 @@
 static inline void free_desc_masks(struct irq_desc *old_desc,
 				   struct irq_desc *new_desc)
 {
-	free_cpumask_var(old_desc->affinity);
+	free_cpumask_var(old_desc->irq_data.affinity);
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	free_cpumask_var(old_desc->pending_mask);
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index 2295a31..f9bf9b2 100644
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -57,9 +57,9 @@
 			 * Some chips need to know about probing in
 			 * progress:
 			 */
-			if (desc->chip->set_type)
-				desc->chip->set_type(i, IRQ_TYPE_PROBE);
-			desc->chip->startup(i);
+			if (desc->irq_data.chip->set_type)
+				desc->irq_data.chip->set_type(i, IRQ_TYPE_PROBE);
+			desc->irq_data.chip->startup(i);
 		}
 		raw_spin_unlock_irq(&desc->lock);
 	}
@@ -76,7 +76,7 @@
 		raw_spin_lock_irq(&desc->lock);
 		if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
 			desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
-			if (desc->chip->startup(i))
+			if (desc->irq_data.chip->startup(i))
 				desc->status |= IRQ_PENDING;
 		}
 		raw_spin_unlock_irq(&desc->lock);
@@ -98,7 +98,7 @@
 			/* It triggered already - consider it spurious. */
 			if (!(status & IRQ_WAITING)) {
 				desc->status = status & ~IRQ_AUTODETECT;
-				desc->chip->shutdown(i);
+				desc->irq_data.chip->shutdown(i);
 			} else
 				if (i < 32)
 					mask |= 1 << i;
@@ -137,7 +137,7 @@
 				mask |= 1 << i;
 
 			desc->status = status & ~IRQ_AUTODETECT;
-			desc->chip->shutdown(i);
+			desc->irq_data.chip->shutdown(i);
 		}
 		raw_spin_unlock_irq(&desc->lock);
 	}
@@ -181,7 +181,7 @@
 				nr_of_irqs++;
 			}
 			desc->status = status & ~IRQ_AUTODETECT;
-			desc->chip->shutdown(i);
+			desc->irq_data.chip->shutdown(i);
 		}
 		raw_spin_unlock_irq(&desc->lock);
 	}
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 4ea775c..e0e93ff 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -32,18 +32,18 @@
 	/* Ensure we don't have left over values from a previous use of this irq */
 	raw_spin_lock_irqsave(&desc->lock, flags);
 	desc->status = IRQ_DISABLED;
-	desc->chip = &no_irq_chip;
+	desc->irq_data.chip = &no_irq_chip;
 	desc->handle_irq = handle_bad_irq;
 	desc->depth = 1;
-	desc->msi_desc = NULL;
-	desc->handler_data = NULL;
+	desc->irq_data.msi_desc = NULL;
+	desc->irq_data.handler_data = NULL;
 	if (!keep_chip_data)
-		desc->chip_data = NULL;
+		desc->irq_data.chip_data = NULL;
 	desc->action = NULL;
 	desc->irq_count = 0;
 	desc->irqs_unhandled = 0;
 #ifdef CONFIG_SMP
-	cpumask_setall(desc->affinity);
+	cpumask_setall(desc->irq_data.affinity);
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_clear(desc->pending_mask);
 #endif
@@ -64,7 +64,7 @@
  *	dynamic_irq_init_keep_chip_data - initialize a dynamically allocated irq
  *	@irq:	irq number to initialize
  *
- *	does not set irq_to_desc(irq)->chip_data to NULL
+ *	does not set irq_to_desc(irq)->irq_data.chip_data to NULL
  */
 void dynamic_irq_init_keep_chip_data(unsigned int irq)
 {
@@ -88,12 +88,12 @@
 			irq);
 		return;
 	}
-	desc->msi_desc = NULL;
-	desc->handler_data = NULL;
+	desc->irq_data.msi_desc = NULL;
+	desc->irq_data.handler_data = NULL;
 	if (!keep_chip_data)
-		desc->chip_data = NULL;
+		desc->irq_data.chip_data = NULL;
 	desc->handle_irq = handle_bad_irq;
-	desc->chip = &no_irq_chip;
+	desc->irq_data.chip = &no_irq_chip;
 	desc->name = NULL;
 	clear_kstat_irqs(desc);
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
@@ -112,7 +112,7 @@
  *	dynamic_irq_cleanup_keep_chip_data - cleanup a dynamically allocated irq
  *	@irq:	irq number to initialize
  *
- *	does not set irq_to_desc(irq)->chip_data to NULL
+ *	does not set irq_to_desc(irq)->irq_data.chip_data to NULL
  */
 void dynamic_irq_cleanup_keep_chip_data(unsigned int irq)
 {
@@ -140,7 +140,7 @@
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
 	irq_chip_set_defaults(chip);
-	desc->chip = chip;
+	desc->irq_data.chip = chip;
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	return 0;
@@ -193,7 +193,7 @@
 	}
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
-	desc->handler_data = data;
+	desc->irq_data.handler_data = data;
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return 0;
 }
@@ -218,7 +218,7 @@
 	}
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
-	desc->msi_desc = entry;
+	desc->irq_data.msi_desc = entry;
 	if (entry)
 		entry->irq = irq;
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
@@ -243,13 +243,13 @@
 		return -EINVAL;
 	}
 
-	if (!desc->chip) {
+	if (!desc->irq_data.chip) {
 		printk(KERN_ERR "BUG: bad set_irq_chip_data(IRQ#%d)\n", irq);
 		return -EINVAL;
 	}
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
-	desc->chip_data = data;
+	desc->irq_data.chip_data = data;
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	return 0;
@@ -291,7 +291,7 @@
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	desc->chip->unmask(irq);
+	desc->irq_data.chip->unmask(irq);
 	desc->status &= ~IRQ_MASKED;
 }
 
@@ -309,7 +309,7 @@
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	desc->chip->enable(irq);
+	desc->irq_data.chip->enable(irq);
 	return 0;
 }
 
@@ -320,7 +320,7 @@
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	desc->chip->mask(irq);
+	desc->irq_data.chip->mask(irq);
 	desc->status |= IRQ_MASKED;
 }
 
@@ -350,28 +350,28 @@
 
 static inline void mask_ack_irq(struct irq_desc *desc, int irq)
 {
-	if (desc->chip->mask_ack)
-		desc->chip->mask_ack(irq);
+	if (desc->irq_data.chip->mask_ack)
+		desc->irq_data.chip->mask_ack(irq);
 	else {
-		desc->chip->mask(irq);
-		if (desc->chip->ack)
-			desc->chip->ack(irq);
+		desc->irq_data.chip->mask(irq);
+		if (desc->irq_data.chip->ack)
+			desc->irq_data.chip->ack(irq);
 	}
 	desc->status |= IRQ_MASKED;
 }
 
 static inline void mask_irq(struct irq_desc *desc, int irq)
 {
-	if (desc->chip->mask) {
-		desc->chip->mask(irq);
+	if (desc->irq_data.chip->mask) {
+		desc->irq_data.chip->mask(irq);
 		desc->status |= IRQ_MASKED;
 	}
 }
 
 static inline void unmask_irq(struct irq_desc *desc, int irq)
 {
-	if (desc->chip->unmask) {
-		desc->chip->unmask(irq);
+	if (desc->irq_data.chip->unmask) {
+		desc->irq_data.chip->unmask(irq);
 		desc->status &= ~IRQ_MASKED;
 	}
 }
@@ -552,7 +552,7 @@
 	raw_spin_lock(&desc->lock);
 	desc->status &= ~IRQ_INPROGRESS;
 out:
-	desc->chip->eoi(irq);
+	desc->irq_data.chip->eoi(irq);
 
 	raw_spin_unlock(&desc->lock);
 }
@@ -594,8 +594,8 @@
 	kstat_incr_irqs_this_cpu(irq, desc);
 
 	/* Start handling the irq */
-	if (desc->chip->ack)
-		desc->chip->ack(irq);
+	if (desc->irq_data.chip->ack)
+		desc->irq_data.chip->ack(irq);
 
 	/* Mark the IRQ currently in progress.*/
 	desc->status |= IRQ_INPROGRESS;
@@ -648,15 +648,15 @@
 
 	kstat_incr_irqs_this_cpu(irq, desc);
 
-	if (desc->chip->ack)
-		desc->chip->ack(irq);
+	if (desc->irq_data.chip->ack)
+		desc->irq_data.chip->ack(irq);
 
 	action_ret = handle_IRQ_event(irq, desc->action);
 	if (!noirqdebug)
 		note_interrupt(irq, desc, action_ret);
 
-	if (desc->chip->eoi)
-		desc->chip->eoi(irq);
+	if (desc->irq_data.chip->eoi)
+		desc->irq_data.chip->eoi(irq);
 }
 
 void
@@ -674,7 +674,7 @@
 
 	if (!handle)
 		handle = handle_bad_irq;
-	else if (desc->chip == &no_irq_chip) {
+	else if (desc->irq_data.chip == &no_irq_chip) {
 		printk(KERN_WARNING "Trying to install %sinterrupt handler "
 		       "for IRQ%d\n", is_chained ? "chained " : "", irq);
 		/*
@@ -684,7 +684,7 @@
 		 * prevent us to setup the interrupt at all. Switch it to
 		 * dummy_irq_chip for easy transition.
 		 */
-		desc->chip = &dummy_irq_chip;
+		desc->irq_data.chip = &dummy_irq_chip;
 	}
 
 	chip_bus_lock(irq, desc);
@@ -692,7 +692,7 @@
 
 	/* Uninstall? */
 	if (handle == handle_bad_irq) {
-		if (desc->chip != &no_irq_chip)
+		if (desc->irq_data.chip != &no_irq_chip)
 			mask_ack_irq(desc, irq);
 		desc->status |= IRQ_DISABLED;
 		desc->depth = 1;
@@ -704,7 +704,7 @@
 		desc->status &= ~IRQ_DISABLED;
 		desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE;
 		desc->depth = 0;
-		desc->chip->startup(irq);
+		desc->irq_data.chip->startup(irq);
 	}
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	chip_bus_sync_unlock(irq, desc);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 099d4fc..fc27d76 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -105,7 +105,7 @@
 	raw_spin_lock_init(&desc->lock);
 	desc->irq_data.irq = irq;
 #ifdef CONFIG_SMP
-	desc->node = node;
+	desc->irq_data.node = node;
 #endif
 	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
 	init_kstat_irqs(desc, node, nr_cpu_ids);
@@ -185,7 +185,7 @@
 		desc[i].irq_data.irq = i;
 		desc[i].irq_data.chip = &no_irq_chip;
 #ifdef CONFIG_SMP
-		desc[i].node = node;
+		desc[i].irq_data.node = node;
 #endif
 		desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids;
 		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
@@ -456,20 +456,20 @@
 		/*
 		 * No locking required for CPU-local interrupts:
 		 */
-		if (desc->chip->ack)
-			desc->chip->ack(irq);
+		if (desc->irq_data.chip->ack)
+			desc->irq_data.chip->ack(irq);
 		if (likely(!(desc->status & IRQ_DISABLED))) {
 			action_ret = handle_IRQ_event(irq, desc->action);
 			if (!noirqdebug)
 				note_interrupt(irq, desc, action_ret);
 		}
-		desc->chip->end(irq);
+		desc->irq_data.chip->end(irq);
 		return 1;
 	}
 
 	raw_spin_lock(&desc->lock);
-	if (desc->chip->ack)
-		desc->chip->ack(irq);
+	if (desc->irq_data.chip->ack)
+		desc->irq_data.chip->ack(irq);
 	/*
 	 * REPLAY is when Linux resends an IRQ that was dropped earlier
 	 * WAITING is used by probe to mark irqs that are being tested
@@ -529,7 +529,7 @@
 	 * The ->end() handler has to deal with interrupts which got
 	 * disabled while the handler was running.
 	 */
-	desc->chip->end(irq);
+	desc->irq_data.chip->end(irq);
 	raw_spin_unlock(&desc->lock);
 
 	return 1;
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index c63f3bc..a805a00 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -43,14 +43,14 @@
 /* Inline functions for support of irq chips on slow busses */
 static inline void chip_bus_lock(unsigned int irq, struct irq_desc *desc)
 {
-	if (unlikely(desc->chip->bus_lock))
-		desc->chip->bus_lock(irq);
+	if (unlikely(desc->irq_data.chip->bus_lock))
+		desc->irq_data.chip->bus_lock(irq);
 }
 
 static inline void chip_bus_sync_unlock(unsigned int irq, struct irq_desc *desc)
 {
-	if (unlikely(desc->chip->bus_sync_unlock))
-		desc->chip->bus_sync_unlock(irq);
+	if (unlikely(desc->irq_data.chip->bus_sync_unlock))
+		desc->irq_data.chip->bus_sync_unlock(irq);
 }
 
 /*
@@ -67,8 +67,8 @@
 		irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
 	printk("->handle_irq():  %p, ", desc->handle_irq);
 	print_symbol("%s\n", (unsigned long)desc->handle_irq);
-	printk("->chip(): %p, ", desc->chip);
-	print_symbol("%s\n", (unsigned long)desc->chip);
+	printk("->irq_data.chip(): %p, ", desc->irq_data.chip);
+	print_symbol("%s\n", (unsigned long)desc->irq_data.chip);
 	printk("->action(): %p\n", desc->action);
 	if (desc->action) {
 		printk("->action->handler(): %p, ", desc->action->handler);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index c3003e9..4dfb195 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -73,8 +73,8 @@
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	if (CHECK_IRQ_PER_CPU(desc->status) || !desc->chip ||
-	    !desc->chip->set_affinity)
+	if (CHECK_IRQ_PER_CPU(desc->status) || !desc->irq_data.chip ||
+	    !desc->irq_data.chip->set_affinity)
 		return 0;
 
 	return 1;
@@ -111,15 +111,15 @@
 	struct irq_desc *desc = irq_to_desc(irq);
 	unsigned long flags;
 
-	if (!desc->chip->set_affinity)
+	if (!desc->irq_data.chip->set_affinity)
 		return -EINVAL;
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (desc->status & IRQ_MOVE_PCNTXT) {
-		if (!desc->chip->set_affinity(irq, cpumask)) {
-			cpumask_copy(desc->affinity, cpumask);
+		if (!desc->irq_data.chip->set_affinity(irq, cpumask)) {
+			cpumask_copy(desc->irq_data.affinity, cpumask);
 			irq_set_thread_affinity(desc);
 		}
 	}
@@ -128,8 +128,8 @@
 		cpumask_copy(desc->pending_mask, cpumask);
 	}
 #else
-	if (!desc->chip->set_affinity(irq, cpumask)) {
-		cpumask_copy(desc->affinity, cpumask);
+	if (!desc->irq_data.chip->set_affinity(irq, cpumask)) {
+		cpumask_copy(desc->irq_data.affinity, cpumask);
 		irq_set_thread_affinity(desc);
 	}
 #endif
@@ -168,16 +168,16 @@
 	 * one of the targets is online.
 	 */
 	if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
-		if (cpumask_any_and(desc->affinity, cpu_online_mask)
+		if (cpumask_any_and(desc->irq_data.affinity, cpu_online_mask)
 		    < nr_cpu_ids)
 			goto set_affinity;
 		else
 			desc->status &= ~IRQ_AFFINITY_SET;
 	}
 
-	cpumask_and(desc->affinity, cpu_online_mask, irq_default_affinity);
+	cpumask_and(desc->irq_data.affinity, cpu_online_mask, irq_default_affinity);
 set_affinity:
-	desc->chip->set_affinity(irq, desc->affinity);
+	desc->irq_data.chip->set_affinity(irq, desc->irq_data.affinity);
 
 	return 0;
 }
@@ -223,7 +223,7 @@
 
 	if (!desc->depth++) {
 		desc->status |= IRQ_DISABLED;
-		desc->chip->disable(irq);
+		desc->irq_data.chip->disable(irq);
 	}
 }
 
@@ -313,7 +313,7 @@
  *	IRQ line is re-enabled.
  *
  *	This function may be called from IRQ context only when
- *	desc->chip->bus_lock and desc->chip->bus_sync_unlock are NULL !
+ *	desc->irq_data.chip->bus_lock and desc->chip->bus_sync_unlock are NULL !
  */
 void enable_irq(unsigned int irq)
 {
@@ -336,8 +336,8 @@
 	struct irq_desc *desc = irq_to_desc(irq);
 	int ret = -ENXIO;
 
-	if (desc->chip->set_wake)
-		ret = desc->chip->set_wake(irq, on);
+	if (desc->irq_data.chip->set_wake)
+		ret = desc->irq_data.chip->set_wake(irq, on);
 
 	return ret;
 }
@@ -432,7 +432,7 @@
 		unsigned long flags)
 {
 	int ret;
-	struct irq_chip *chip = desc->chip;
+	struct irq_chip *chip = desc->irq_data.chip;
 
 	if (!chip || !chip->set_type) {
 		/*
@@ -457,8 +457,8 @@
 		desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK);
 		desc->status |= flags;
 
-		if (chip != desc->chip)
-			irq_chip_set_defaults(desc->chip);
+		if (chip != desc->irq_data.chip)
+			irq_chip_set_defaults(desc->irq_data.chip);
 	}
 
 	return ret;
@@ -528,7 +528,7 @@
 
 	if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) {
 		desc->status &= ~IRQ_MASKED;
-		desc->chip->unmask(irq);
+		desc->irq_data.chip->unmask(irq);
 	}
 	raw_spin_unlock_irq(&desc->lock);
 	chip_bus_sync_unlock(irq, desc);
@@ -556,7 +556,7 @@
 	}
 
 	raw_spin_lock_irq(&desc->lock);
-	cpumask_copy(mask, desc->affinity);
+	cpumask_copy(mask, desc->irq_data.affinity);
 	raw_spin_unlock_irq(&desc->lock);
 
 	set_cpus_allowed_ptr(current, mask);
@@ -657,7 +657,7 @@
 	if (!desc)
 		return -EINVAL;
 
-	if (desc->chip == &no_irq_chip)
+	if (desc->irq_data.chip == &no_irq_chip)
 		return -ENOSYS;
 	/*
 	 * Some drivers like serial.c use request_irq() heavily,
@@ -752,7 +752,7 @@
 	}
 
 	if (!shared) {
-		irq_chip_set_defaults(desc->chip);
+		irq_chip_set_defaults(desc->irq_data.chip);
 
 		init_waitqueue_head(&desc->wait_for_threads);
 
@@ -779,7 +779,7 @@
 		if (!(desc->status & IRQ_NOAUTOEN)) {
 			desc->depth = 0;
 			desc->status &= ~IRQ_DISABLED;
-			desc->chip->startup(irq);
+			desc->irq_data.chip->startup(irq);
 		} else
 			/* Undo nested disables: */
 			desc->depth = 1;
@@ -912,17 +912,17 @@
 
 	/* Currently used only by UML, might disappear one day: */
 #ifdef CONFIG_IRQ_RELEASE_METHOD
-	if (desc->chip->release)
-		desc->chip->release(irq, dev_id);
+	if (desc->irq_data.chip->release)
+		desc->irq_data.chip->release(irq, dev_id);
 #endif
 
 	/* If this was the last handler, shut down the IRQ line: */
 	if (!desc->action) {
 		desc->status |= IRQ_DISABLED;
-		if (desc->chip->shutdown)
-			desc->chip->shutdown(irq);
+		if (desc->irq_data.chip->shutdown)
+			desc->irq_data.chip->shutdown(irq);
 		else
-			desc->chip->disable(irq);
+			desc->irq_data.chip->disable(irq);
 	}
 
 #ifdef CONFIG_SMP
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 2419622..f923c37 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -24,7 +24,7 @@
 	if (unlikely(cpumask_empty(desc->pending_mask)))
 		return;
 
-	if (!desc->chip->set_affinity)
+	if (!desc->irq_data.chip->set_affinity)
 		return;
 
 	assert_raw_spin_locked(&desc->lock);
@@ -43,8 +43,8 @@
 	 */
 	if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask)
 		   < nr_cpu_ids))
-		if (!desc->chip->set_affinity(irq, desc->pending_mask)) {
-			cpumask_copy(desc->affinity, desc->pending_mask);
+		if (!desc->irq_data.chip->set_affinity(irq, desc->pending_mask)) {
+			cpumask_copy(desc->irq_data.affinity, desc->pending_mask);
 			irq_set_thread_affinity(desc);
 		}
 
@@ -61,8 +61,8 @@
 	if (unlikely(desc->status & IRQ_DISABLED))
 		return;
 
-	desc->chip->mask(irq);
+	desc->irq_data.chip->mask(irq);
 	move_masked_irq(irq);
-	desc->chip->unmask(irq);
+	desc->irq_data.chip->unmask(irq);
 }
 
diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c
index 65d3845..e7f1f16 100644
--- a/kernel/irq/numa_migrate.c
+++ b/kernel/irq/numa_migrate.c
@@ -44,7 +44,7 @@
 		return false;
 	}
 	raw_spin_lock_init(&desc->lock);
-	desc->node = node;
+	desc->irq_data.node = node;
 	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
 	init_copy_kstat_irqs(old_desc, desc, node, nr_cpu_ids);
 	init_copy_desc_masks(old_desc, desc);
@@ -66,7 +66,7 @@
 	unsigned int irq;
 	unsigned long flags;
 
-	irq = old_desc->irq;
+	irq = old_desc->irq_data.irq;
 
 	raw_spin_lock_irqsave(&sparse_irq_lock, flags);
 
@@ -109,10 +109,10 @@
 struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
 {
 	/* those static or target node is -1, do not move them */
-	if (desc->irq < NR_IRQS_LEGACY || node == -1)
+	if (desc->irq_data.irq < NR_IRQS_LEGACY || node == -1)
 		return desc;
 
-	if (desc->node != node)
+	if (desc->irq_data.node != node)
 		desc = __real_move_irq_desc(desc, node);
 
 	return desc;
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 09a2ee5..9b0da94 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -21,7 +21,7 @@
 static int irq_affinity_proc_show(struct seq_file *m, void *v)
 {
 	struct irq_desc *desc = irq_to_desc((long)m->private);
-	const struct cpumask *mask = desc->affinity;
+	const struct cpumask *mask = desc->irq_data.affinity;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (desc->status & IRQ_MOVE_PENDING)
@@ -65,7 +65,7 @@
 	cpumask_var_t new_value;
 	int err;
 
-	if (!irq_to_desc(irq)->chip->set_affinity || no_irq_affinity ||
+	if (!irq_to_desc(irq)->irq_data.chip->set_affinity || no_irq_affinity ||
 	    irq_balancing_disabled(irq))
 		return -EIO;
 
@@ -185,7 +185,7 @@
 {
 	struct irq_desc *desc = irq_to_desc((long) m->private);
 
-	seq_printf(m, "%d\n", desc->node);
+	seq_printf(m, "%d\n", desc->irq_data.node);
 	return 0;
 }
 
@@ -269,7 +269,7 @@
 {
 	char name [MAX_NAMELEN];
 
-	if (!root_irq_dir || (desc->chip == &no_irq_chip) || desc->dir)
+	if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
 		return;
 
 	memset(name, 0, MAX_NAMELEN);
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index 090c376..47c56a0 100644
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -60,7 +60,7 @@
 	/*
 	 * Make sure the interrupt is enabled, before resending it:
 	 */
-	desc->chip->enable(irq);
+	desc->irq_data.chip->enable(irq);
 
 	/*
 	 * We do not resend level type interrupts. Level type
@@ -70,7 +70,8 @@
 	if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
 		desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY;
 
-		if (!desc->chip->retrigger || !desc->chip->retrigger(irq)) {
+		if (!desc->irq_data.chip->retrigger ||
+		    !desc->irq_data.chip->retrigger(irq)) {
 #ifdef CONFIG_HARDIRQS_SW_RESEND
 			/* Set it pending and activate the softirq: */
 			set_bit(irq, irqs_resend);
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index 89fb90a..36c2c92 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -78,8 +78,8 @@
 	 * If we did actual work for the real IRQ line we must let the
 	 * IRQ controller clean up too
 	 */
-	if (work && desc->chip && desc->chip->end)
-		desc->chip->end(irq);
+	if (work && desc->irq_data.chip && desc->irq_data.chip->end)
+		desc->irq_data.chip->end(irq);
 	raw_spin_unlock(&desc->lock);
 
 	return ok;
@@ -254,7 +254,7 @@
 		printk(KERN_EMERG "Disabling IRQ #%d\n", irq);
 		desc->status |= IRQ_DISABLED | IRQ_SPURIOUS_DISABLED;
 		desc->depth++;
-		desc->chip->disable(irq);
+		desc->irq_data.chip->disable(irq);
 
 		mod_timer(&poll_spurious_irq_timer,
 			  jiffies + POLL_SPURIOUS_IRQ_INTERVAL);