diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
index 53cf14349d5e9ce9cb9471eb6eea7c976a108802..4c95bfe8813b8683a2c2a8feff2f5672290d2abf 100644
--- a/arch/powerpc/sysdev/xive/spapr.c
+++ b/arch/powerpc/sysdev/xive/spapr.c
@@ -55,7 +55,7 @@ static int xive_irq_bitmap_add(int base, int count)
 	spin_lock_init(&xibm->lock);
 	xibm->base = base;
 	xibm->count = count;
-	xibm->bitmap = kzalloc(xibm->count, GFP_KERNEL);
+	xibm->bitmap = bitmap_zalloc(xibm->count, GFP_KERNEL);
 	if (!xibm->bitmap) {
 		kfree(xibm);
 		return -ENOMEM;