diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index f49650677653..b62f560e6c75 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -26,7 +26,8 @@ extern void __init at91_dt_initialize(void);
 extern void __init at91_init_irq_default(void);
 extern void __init at91_init_interrupts(unsigned int priority[]);
 extern void __init at91x40_init_interrupts(unsigned int priority[]);
-extern void __init at91_aic_init(unsigned int priority[]);
+extern void __init at91_aic_init(unsigned int priority[],
+				 unsigned int ext_irq_mask);
 extern int  __init at91_aic_of_init(struct device_node *node,
 				    struct device_node *parent);
 extern int  __init at91_aic5_of_init(struct device_node *node,
diff --git a/arch/arm/mach-at91/irq.c b/arch/arm/mach-at91/irq.c
index 1e02c0e49dcc..febc2ee901a5 100644
--- a/arch/arm/mach-at91/irq.c
+++ b/arch/arm/mach-at91/irq.c
@@ -502,14 +502,19 @@ int __init at91_aic5_of_init(struct device_node *node,
 /*
  * Initialize the AIC interrupt controller.
  */
-void __init at91_aic_init(unsigned int *priority)
+void __init at91_aic_init(unsigned int *priority, unsigned int ext_irq_mask)
 {
 	unsigned int i;
 	int irq_base;
 
-	if (at91_aic_pm_init())
+	at91_extern_irq = kzalloc(BITS_TO_LONGS(n_irqs)
+				  * sizeof(*at91_extern_irq), GFP_KERNEL);
+
+	if (at91_aic_pm_init() || at91_extern_irq == NULL)
 		panic("Unable to allocate bit maps\n");
 
+	*at91_extern_irq = ext_irq_mask;
+
 	at91_aic_base = ioremap(AT91_AIC, 512);
 	if (!at91_aic_base)
 		panic("Unable to ioremap AIC registers\n");
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 6a3d4bb6d2ec..0b32c81730a5 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -47,7 +47,7 @@ void __init at91_init_irq_default(void)
 void __init at91_init_interrupts(unsigned int *priority)
 {
 	/* Initialize the AIC interrupt controller */
-	at91_aic_init(priority);
+	at91_aic_init(priority, at91_extern_irq);
 
 	/* Enable GPIO interrupts */
 	at91_gpio_irq_setup();