2 files changed, 16 insertions, 2 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ac6700985705..1cfdb08ddf20 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -18,6 +18,10 @@
 
 cpumask_t irq_affinity[NR_IRQS] = { [0 ... NR_IRQS-1] = CPU_MASK_ALL };
 
+#if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
+cpumask_t __cacheline_aligned pending_irq_cpumask[NR_IRQS];
+#endif
+
 /**
  *      synchronize_irq - wait for pending IRQ handlers (on other CPUs)
  *
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 85d08daa6600..f26e534c6585 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -19,12 +19,22 @@ static struct proc_dir_entry *root_irq_dir, *irq_dir[NR_IRQS];
  */
 static struct proc_dir_entry *smp_affinity_entry[NR_IRQS];
 
-void __attribute__((weak))
-proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
+#ifdef CONFIG_GENERIC_PENDING_IRQ
+void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
+{
+        /*
+         * Save these away for later use. Re-progam when the
+         * interrupt is pending
+         */
+        set_pending_irq(irq, mask_val);
+}
+#else
+void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
 {
         irq_affinity[irq] = mask_val;
         irq_desc[irq].handler->set_affinity(irq, mask_val);
 }
+#endif
 
 static int irq_affinity_read_proc(char *page, char **start, off_t off,
                                   int count, int *eof, void *data)