diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 838857f..cc7dd12 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -183,7 +183,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 	if (i < NR_IRQS) {
 		desc = get_irq_desc(i);
-		acquire_lock_irqsave(&desc->lock, flags);
+		spin_lock_irqsave(&desc->lock, flags);
 		action = desc->action;
 		if (!action || !action->handler)
 			goto skip;
@@ -204,7 +204,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			seq_printf(p, ", %s", action->name);
 		seq_putc(p, '\n');
 skip:
-		release_lock_irqrestore(&desc->lock, flags);
+		spin_unlock_irqrestore(&desc->lock, flags);
 	} else if (i == NR_IRQS) {
 #if defined(CONFIG_PPC32) && defined(CONFIG_TAU_INT)
 		if (tau_initialized){