2 files changed, 27 insertions, 7 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 3eab46f590a9..a31a7d8acdb2 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -205,6 +205,7 @@ static inline void set_native_irq_info(int irq, cpumask_t mask)
 
 void set_pending_irq(unsigned int irq, cpumask_t mask);
 void move_native_irq(int irq);
+void move_masked_irq(int irq);
 
 #ifdef CONFIG_PCI_MSI
 /*
@@ -246,6 +247,10 @@ static inline void move_native_irq(int irq)
 {
 }
 
+static inline void move_masked_irq(int irq)
+{
+}
+
 static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
 {
 }
@@ -261,6 +266,7 @@ static inline void set_irq_info(int irq, cpumask_t mask)
 
 #define move_irq(x)
 #define move_native_irq(x)
+#define move_masked_irq(x)
 
 #endif /* CONFIG_SMP */
 
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 9b234df810d0..4baa3bbcd25a 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -12,7 +12,7 @@ void set_pending_irq(unsigned int irq, cpumask_t mask)
         spin_unlock_irqrestore(&desc->lock, flags);
 }
 
-void move_native_irq(int irq)
+void move_masked_irq(int irq)
 {
         struct irq_desc *desc = irq_desc + irq;
         cpumask_t tmp;
@@ -48,15 +48,29 @@ void move_native_irq(int irq)
          * when an active trigger is comming in. This could
          * cause some ioapics to mal-function.
          * Being paranoid i guess!
+         *
+         * For correct operation this depends on the caller
+         * masking the irqs.
          */
         if (likely(!cpus_empty(tmp))) {
-                if (likely(!(desc->status & IRQ_DISABLED)))
-                        desc->chip->disable(irq);
-
                 desc->chip->set_affinity(irq,tmp);
-
-                if (likely(!(desc->status & IRQ_DISABLED)))
-                        desc->chip->enable(irq);
         }
         cpus_clear(irq_desc[irq].pending_mask);
 }
+
+void move_native_irq(int irq)
+{
+        struct irq_desc *desc = irq_desc + irq;
+
+        if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+                return;
+
+        if (likely(!(desc->status & IRQ_DISABLED)))
+                desc->chip->disable(irq);
+
+        move_masked_irq(irq);
+
+        if (likely(!(desc->status & IRQ_DISABLED)))
+                desc->chip->enable(irq);
+}
+