diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 8a3b0c3a1e92..fd99735dca3e 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -875,6 +875,7 @@ int iosapic_serial_irq(struct parisc_device *dev)
 
 	return vi->txn_irq;
 }
+EXPORT_SYMBOL(iosapic_serial_irq);
 #endif