diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index ba8f1f7..0a55db8 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -198,7 +198,7 @@
 }
 
 static int i8259_host_xlate(struct irq_host *h, struct device_node *ct,
-			    u32 *intspec, unsigned int intsize,
+			    const u32 *intspec, unsigned int intsize,
 			    irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 {
 	static unsigned char map_isa_senses[4] = {