Use the irq_get_nr_irqs() and irq_set_nr_irqs() functions instead of the
global variable 'nr_irqs'. This patch prepares for changing 'nr_irqs' from
an exported global variable into a variable with file scope.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 arch/arm/kernel/irq.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index dab42d066d06..e1993e28a9ec 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -111,7 +111,7 @@ void handle_IRQ(unsigned int irq, struct pt_regs *regs)
 	 * Some hardware gives randomly wrong interrupts.  Rather
 	 * than crashing, do something sensible.
 	 */
-	if (unlikely(!irq || irq >= nr_irqs))
+	if (unlikely(!irq || irq >= irq_get_nr_irqs()))
 		desc = NULL;
 	else
 		desc = irq_to_desc(irq);
@@ -151,7 +151,6 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SPARSE_IRQ
 int __init arch_probe_nr_irqs(void)
 {
-	nr_irqs = machine_desc->nr_irqs ? machine_desc->nr_irqs : NR_IRQS;
-	return nr_irqs;
+	return irq_set_nr_irqs(machine_desc->nr_irqs ? : NR_IRQS);
 }
 #endif